lesson clean some vocab

docs/howtostudykorean/unit-1/05-tenses.md

@@ -31,208 +31,240 @@ Examples:
 
 </Details>
 
-남동생 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s2.mp3" /> = younger brother
+남동생 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s2.mp3" /> = <span class="md spoiler">younger brother</span>
 
 <Details>
 
 Examples:
-저는 **남동생**보다 키가 더 커요 = I am taller than my <strong>(younger) brother</strong>
+
-나는 **남동생**보다 밥을 더 먹었어 = I ate more than my <strong>(younger) brother</strong>
+- <TTS class="md">저는 **남동생**보다 키가 더 커요</TTS> = <span class="md spoiler">I am taller than my <strong>(younger) brother</strong></span>
-너의 **남동생**은 몇 살이야? = How old is your <strong>(younger) brother?</strong>
+- <TTS class="md">나는 **남동생**보다 밥을 더 먹었어</TTS> = <span class="md spoiler">I ate more than my <strong>(younger) brother</strong></span>
-저의 게으른 **남동생**은 하루 종일 아무것도 안 해요 = My lazy **brother** doesn’t do anything all day
+- <TTS class="md">너의 **남동생**은 몇 살이야?</TTS> = <span class="md spoiler">How old is your <strong>(younger) brother?</strong></span>
-저는 2주 전에 **남동생**을 만났어요 = I met my **brother** 2 weeks ago
+- <TTS class="md">저의 게으른 **남동생**은 하루 종일 아무것도 안 해요</TTS> = <span class="md spoiler">My lazy **brother** doesn’t do anything all day</span>
-**남동생**은 울었어요? = Did your **brother** cry?
+- <TTS class="md">저는 2주 전에 **남동생**을 만났어요</TTS> = <span class="md spoiler">I met my **brother** 2 weeks ago</span>
+- <TTS class="md">**남동생**은 울었어요?</TTS> = <span class="md spoiler">Did your **brother** cry?</span>
 
 </Details>
 
-여동생 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s3.mp3" /> = younger sister
+여동생 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s3.mp3" /> = <span class="md spoiler">younger sister</span>
 
 <Details>
 
 Examples:
-저의 **여동생**은 지난 주에 책 두 권을 읽었어요 = My **sister** read two books last week
+
-너의 **여동생**은 예뻐요 = Your **younger sister** is pretty
+- <TTS class="md">저의 **여동생**은 지난 주에 책 두 권을 읽었어요</TTS> = <span class="md spoiler">My **sister** read two books last week</span>
+- <TTS class="md">너의 **여동생**은 예뻐요</TTS> = <span class="md spoiler">Your **younger sister** is pretty</span>
 
 </Details>
 
-형 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-1.mp3" /> = older brother
+형 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-1.mp3" /> = <span class="md spoiler">older brother</span>
 
 <Details>
 
 Notes:
+
 This word is only used if the younger person is also a man
 
 Common Usages:
-형님 = formal version of 형
+
+- <TTS>형님</TTS> = formal version of 형
 
 Examples:
-그 사람은 저의 **형**입니다 = That person is my **brother**
+
-**형**을 왜 때렸어요? = Why did you hit your **brother**?
+- <TTS class="md">그 사람은 저의 **형**입니다</TTS> = <span class="md spoiler">That person is my **brother**</span>
-저의 **형**은 똑똑한 남자입니다 = My **brother** is a smart man
+- <TTS class="md">**형**을 왜 때렸어요?</TTS> = <span class="md spoiler">Why did you hit your **brother**?</span>
+- <TTS class="md">저의 **형**은 똑똑한 남자입니다</TTS> = <span class="md spoiler">My **brother** is a smart man</span>
 
 </Details>
 
-오빠 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-2.mp3" /> = older brother
+오빠 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-2.mp3" /> = <span class="md spoiler">older brother</span>
 
 <Details>
 
 Notes:
+
 This word is only used if the younger person is a female
 
 Example:
-저는 공을 **오빠**한테 던졌어요 = I threw the ball to my <strong>brother
+
-오빠</strong>는 바닥에 앉아서 점심을 먹었어요 = My **brother** ate lunch sitting on the floor
+- <TTS class="md">저는 공을 **오빠**한테 던졌어요</TTS> = <span class="md spoiler">I threw the ball to my **brother**</span>
-**오빠**는 밤 늦게 밥을 먹는 것을 좋아해요 = My **brother** likes eating food late at night
+- <TTS class="md">**오빠**는 바닥에 앉아서 점심을 먹었어요</TTS> = <span class="md spoiler">My **brother** ate lunch sitting on the floor</span>
-**오빤** (**오빠**는) 강남스타일 = **older brother** (I am) is Gangnam style
+- <TTS class="md">**오빠**는 밤 늦게 밥을 먹는 것을 좋아해요</TTS> = <span class="md spoiler">My **brother** likes eating food late at night</span>
+- <TTS class="md">**오빤** (**오빠**는) 강남스타일</TTS> = <span class="md spoiler">**older brother** (I am) is Gangnam style</span>
 
 </Details>
 
-누나 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-3.mp3" /> = older sister
+누나 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-3.mp3" /> = <span class="md spoiler">older sister</span>
 
 <Details>
 
 Notes:
+
 This word is only used if the younger person is a male
 
 Examples:
-저의 **누나**는 대학생이에요 = My **older** **sister** is a University student
+
-저는 저의 **누나**를 불렀어요 = I called my <strong>sister</strong>
+- <TTS class="md">저의 **누나**는 대학생이에요</TTS> = <span class="md spoiler">My **older** **sister** is a University student</span>
-이 사람은 저의 **누나**예요 = This (person) is my <strong>sister</strong>
+- <TTS class="md">저는 저의 **누나**를 불렀어요</TTS> = <span class="md spoiler">I called my <strong>sister</strong></span>
-저는 저의 **누나**한테 돈만 줄 거예요 = To my **older sister**, I’ll just give money
+- <TTS class="md">이 사람은 저의 **누나**예요</TTS> = <span class="md spoiler">This (person) is my <strong>sister</strong></span>
-저의 **누나**는 충동적인 여자예요 = My older **sister** is an impulsive girl
+- <TTS class="md">저는 저의 **누나**한테 돈만 줄 거예요</TTS> = <span class="md spoiler">To my **older sister**, I’ll just give money</span>
+- <TTS class="md">저의 **누나**는 충동적인 여자예요</TTS> = <span class="md spoiler">My older **sister** is an impulsive girl</span>
 
 </Details>
 
-언니 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-4.mp3" /> = older sister
+언니 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-4.mp3" /> = <span class="md spoiler">older sister</span>
 
 <Details>
 
 Notes:
+
 This word is only used if the younger person is a female
 
 Example:
-저는 **언니**랑 밥을 먹었어요 = I ate with my **sister**
+
+- <TTS class="md">저는 **언니**랑 밥을 먹었어요</TTS> = <span class="md spoiler">I ate with my **sister**</span>
 
 </Details>
 
-삼촌 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-5.mp3" /> = uncle
+삼촌 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-5.mp3" /> = <span class="md spoiler">uncle</span>
-
-<Details>
-
-Notes: Korean people often pronounce this word as “삼춘”
-
-Example:
-저의 **삼촌**은 선생님이에요 = My **uncle** is a teacher
-
-</Details>
-
-이모 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-6.mp3" /> = aunt (on mother’s side)
 
 <Details>
 
 Notes:
+
+Korean people often pronounce this word as “삼춘”
+
+Example:
+
+- <TTS class="md">저의 **삼촌**은 선생님이에요</TTS> = <span class="md spoiler">My **uncle** is a teacher</span>
+
+</Details>
+
+이모 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-6.mp3" /> = <span class="md spoiler">aunt (on mother’s side)</span>
+
+<Details>
+
+Notes:
+
 This word is only used to refer to the sister(s) of one’s mother
 
 Common Usages:
-큰 이모 = the oldest sister of one’s mother
+
-둘째 이모 = the second oldest sister of one’s mother
+- <TTS>큰 이모</TTS> = <span class="md spoiler">the oldest sister of one’s mother</span>
-막내 이모 = the youngest sister of one’s mother
+- <TTS>둘째 이모</TTS> = <span class="md spoiler">the second oldest sister of one’s mother</span>
+- <TTS>막내 이모</TTS> = <span class="md spoiler">the youngest sister of one’s mother</span>
 
 Example:
-우리 엄마는 **이모**와 닮았어요 = My mom looks like our **aunt**
+
+- <TTS class="md">우리 엄마는 **이모**와 닮았어요</TTS> = <span class="md spoiler">My mom looks like our **aunt**</span>
 
 </Details>
 
-고모 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-7.mp3" /> = aunt (on father’s side)
+고모 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-7.mp3" /> = <span class="md spoiler">aunt (on father’s side)</span>
 
 <Details>
 
 Notes:
+
 This word is only used to refer to the sister(s) of one’s father
 
 Example:
-우리 아버지는 **고모**와 살고 있어요 = Our father lives with our **aunt**
+
+- <TTS class="md">우리 아버지는 **고모**와 살고 있어요</TTS> = <span class="md spoiler">Our father lives with our **aunt**</span>
 
 </Details>
 
-아저씨 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-8.mp3" /> = older man not related to you
+아저씨 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-8.mp3" /> = <span class="md spoiler">older man not related to you</span>
 
 <Details>
 
-Notes: This word is used to refer to an older man whom you don’t know. More broadly, it can be applied to the position that men have, for example “버스 아저씨” for “bus driver” or “택시 아저씨” for “taxi driver.”
+Notes:
+
+This word is used to refer to an older man whom you don’t know. More broadly, it can be applied to the position that men have, for example “버스 아저씨” for “<span class="md spoiler">bus driver</span>” or “택시 아저씨” for “<span class="md spoiler">taxi driver</span>.”
 
 Example:
-**아저씨**! 앉으세요! = **Sir**, please sit down
+
-**아저씨**! 맥주 두 잔 주세요! = **Sir**! Two glasses of beer, please!
+- <TTS class="md">**아저씨**! 앉으세요!</TTS> = <span class="md spoiler">**Sir**, please sit down</span>
+- <TTS class="md">**아저씨**! 맥주 두 잔 주세요!</TTS> = <span class="md spoiler">**Sir**! Two glasses of beer, please!</span>
 
 </Details>
 
-아주머니 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-9.mp3" /> = older woman not related to you
+아주머니 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-9.mp3" /> = <span class="md spoiler">older woman not related to you</span>
 
 <Details>
 
 Example:
-**아주머니**! 소주 두 병 주세요! = **Miss**! Two bottles of soju please!
+
-동대문시장에서 아주머니가 많아요 = There are a lot of older women in Dongdaemun market
+- <TTS class="md">**아주머니**! 소주 두 병 주세요!</TTS> = <span class="md spoiler">**Miss**! Two bottles of soju please!</span>
+- <TTS class="md">동대문시장에서 아주머니가 많아요</TTS> = <span class="md spoiler">There are a lot of older women in Dongdaemun market</span>
 
 </Details>
 
-할아버지 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-10.mp3" /> = grandfather
+할아버지 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-10.mp3" /> = <span class="md spoiler">grandfather</span>
 
 <Details>
 
 The pronunciation of this word is closer to “하라버지”
 
 Common Usages:
-산타할아버지 = Santa Clause (Santa Grandpa)
 
-Notes: You can use this word to refer to anybody who looks the age of a grandfather, not just your own grandfather.
+- <TTS>산타할아버지</TTS> = <span class="md spoiler">Santa Clause (Santa Grandpa)</span>
+
+Notes:
+
+You can use this word to refer to anybody who looks the age of a grandfather, not just your own grandfather.
 
 Example:
-우리 **할아버지**는 한국전쟁에서 싸웠어요 = Our **grandfather** fought in the Korean war
+
-**할아버지**와 **할아버지** 친구는 옛날 이야기를 나눴어요 = **Grandpa** and his friend shared old stories (with each other)
+- <TTS class="md">우리 **할아버지**는 한국전쟁에서 싸웠어요</TTS> = <span class="md spoiler">Our **grandfather** fought in the Korean war</span>
-아들은 **할아버지**께 선물을 줬어요 = The son gave a present to his <strong>grandfather</strong>
+- <TTS class="md">**할아버지**와 **할아버지** 친구는 옛날 이야기를 나눴어요</TTS> = <span class="md spoiler">**Grandpa** and his friend shared old stories (with each other)</span>
-그 **할아버지**는 주름이 하나도 없어요 = That **grandfather** doesn’t even have one wrinkle
+- <TTS class="md">아들은 **할아버지**께 선물을 줬어요</TTS> = <span class="md spoiler">The son gave a present to his <strong>grandfather</strong></span>
-**할아버지**께 선물을 드리고 싶어요 = I want to give my **grandfather** a present
+- <TTS class="md">그 **할아버지**는 주름이 하나도 없어요</TTS> = <span class="md spoiler">That **grandfather** doesn’t even have one wrinkle</span>
-**할아버지**가 여기에 계신지 몰랐어요 = I didn’t know you were here, <strong>grandpa
+- <TTS class="md">**할아버지**께 선물을 드리고 싶어요</TTS> = <span class="md spoiler">I want to give my **grandfather** a present</span>
-할아버</strong>지는 우리 아들에게 돈을 주었어요 = **Grandpa** gave money to our son
+- <TTS class="md">**할아버지**가 여기에 계신지 몰랐어요</TTS> = <span class="md spoiler">I didn’t know you were here, **grandpa**</span>
-우리 **할아버지**가 죽어서 저는 너무 슬퍼요 = I am very sad because my **grandfather** died
+- <TTS class="md">**할아버**지는 우리 아들에게 돈을 주었어요</TTS> = <span class="md spoiler">**Grandpa** gave money to our son</span>
+- <TTS class="md">우리 **할아버지**가 죽어서 저는 너무 슬퍼요</TTS> = <span class="md spoiler">I am very sad because my **grandfather** died</span>
 
 </Details>
 
-할머니 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-11.mp3" /> = grandmother
+할머니 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-11.mp3" /> = <span class="md spoiler">grandmother</span>
 
 <Details>
 
-Notes: You can use this word to refer to anybody who looks the age of a grandmother, not just your own grandmother.
+Notes:
+
+You can use this word to refer to anybody who looks the age of a grandmother, not just your own grandmother.
 
 Example:
-저의 **할머니**는 요리를 너무 잘해요 = My **grandmother** cooks very well
+
-저의 **할머니**가 여기에 자주 안 오셔요 = My **grandmother** doesn’t come here often
+- <TTS class="md">저의 **할머니**는 요리를 너무 잘해요</TTS> = <span class="md spoiler">My **grandmother** cooks very well</span>
-저는 **할머니**를 위해 식사를 준비했어요 = I prepared a meal for <strong>grandmother
+- <TTS class="md">저의 **할머니**가 여기에 자주 안 오셔요</TTS> = <span class="md spoiler">My **grandmother** doesn’t come here often</span>
-할머니</strong>는 어제 아파서 입원했어요 = **Grandma** checked into the hospital yesterday because she was sick
+- <TTS class="md">저는 **할머니**를 위해 식사를 준비했어요</TTS> = <span class="md spoiler">I prepared a meal for **grandmother**</span>
+- <TTS class="md">**할머니**는 어제 아파서 입원했어요</TTS> = <span class="md spoiler">**Grandma** checked into the hospital yesterday because she was sick</span>
 
 </Details>
 
-친구 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-12.mp3" /> = friend
+친구 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/wLesson-5-12.mp3" /> = <span class="md spoiler">friend</span>
 
 <Details>
 
 Common Usages:
-여자 친구 = girlfriend
+
-남자 친구 = boyfriend
+- <TTS class="md">여자 친구</TTS> = <span class="md spoiler">girlfriend</span>
-친구를 만나다 = to meet a friend
+- <TTS class="md">남자 친구</TTS> = <span class="md spoiler">boyfriend</span>
+- <TTS class="md">친구를 만나다</TTS> = <span class="md spoiler">to meet a friend</span>
 
 Example:
-저는 어제 **친구**를 만났어요 = I met a **friend** yesterday
+
-저는 저의 **친구**를 자주 만나요 = I meet my **friend** often
+- <TTS class="md">저는 어제 **친구**를 만났어요</TTS> = <span class="md spoiler">I met a **friend** yesterday</span>
-저는 **친구**랑 같이 있어요 = I’m with my <strong>friend</strong>
+- <TTS class="md">저는 저의 **친구**를 자주 만나요</TTS> = <span class="md spoiler">I meet my **friend** often</span>
-저는 저의 **친구**에게 돈을 줬어요 = I gave my **friend** money
+- <TTS class="md">저는 **친구**랑 같이 있어요</TTS> = <span class="md spoiler">I’m with my <strong>friend</strong></span>
-저는 **친구**와 집에 갔어요 = I went home with my <strong>friend</strong>
+- <TTS class="md">저는 저의 **친구**에게 돈을 줬어요</TTS> = <span class="md spoiler">I gave my **friend** money</span>
-저는 그것을 **친구**한테서 들었어요 = I heard that from my <strong>friend</strong>
+- <TTS class="md">저는 **친구**와 집에 갔어요</TTS> = <span class="md spoiler">I went home with my <strong>friend</strong></span>
-저의 **친구**는 저 쪽으로 갔어요 = My **friend** went that way
+- <TTS class="md">저는 그것을 **친구**한테서 들었어요</TTS> = <span class="md spoiler">I heard that from my <strong>friend</strong></span>
-저는 **친구**와 비슷해요 = I am similar to my <strong>friend</strong>
+- <TTS class="md">저의 **친구**는 저 쪽으로 갔어요</TTS> = <span class="md spoiler">My **friend** went that way</span>
-저의 **친구**는 (여기) 근처에 살아요 = My **friend** lives close (to here)
+- <TTS class="md">저는 **친구**와 비슷해요</TTS> = <span class="md spoiler">I am similar to my <strong>friend</strong></span>
+- <TTS class="md">저의 **친구**는 (여기) 근처에 살아요</TTS> = <span class="md spoiler">My **friend** lives close (to here)</span>
 
 </Details>
 
@@ -808,7 +840,14 @@ In the lesson below, all of the sentences are conjugated in an informal style. T
 
 You may have noticed that I still haven’t taught you one of those most common words in the English language. I know this sounds weird, but the word ‘you’ is not said very often in Korean. Korean people get around saying the word ‘you’ through a number of ways:
 
-1. Most of the time, you use somebody’s (usually job) position when referring to them or talking about them. For example, boss (부장님), principal (교장선생님), vice principal (교감선생님), Mr. Name (for a teacher) (Name선생님), customer (고객님), guest (손님), 회장님/사장님 (president/CEO of a company).
+1. Most of the time, you use somebody’s (usually job) position when referring to them or talking about them. For example,
+   - <span class="md spoiler">boss</span> (부장님)
+   - <span class="md spoiler">principal</span> (교장선생님)
+   - <span class="md spoiler">vice principal</span> (교감선생님)
+   - <span class="md spoiler">Mr. Name (for a teacher)</span> (Name선생님)
+   - <span class="md spoiler">customer</span> (고객님)
+   - <span class="md spoiler">guest</span> (손님)
+   - <span class="md spoiler">president/CEO of a company</span> (회장님/사장님)
 2. It is very common in Korean to refer to people that you are close with as your own family member. For example, 오빠 means “older brother” (when you are a woman). But even if somebody is not your older brother, you can call him ‘오빠’ if you are close to him.
 3. You can usually call any woman or man that looks very old “grandmother” and “grandfather” (할머니/할아버지). But other than that, you don’t really call somebody part of your family unless you are close with that person.
 4. You can generally call any strange man or woman that you don’t know ‘아저씨’ (man) and ‘아주머니’ (woman).
@@ -837,26 +876,26 @@ Let’s look at how to conjugate verbs and adjectives into the past, present and
 
 When the last syllable of the stem ends in a consonant, you add ~는다 to the stem of the word:
 
-- 먹다 = 먹는다 = to eat (먹 + 는다)
+- 먹다 = 먹는다 = <span class="md spoiler">to eat</span> (먹 + 는다)
-- 닫다 = 닫는다 = to close (닫 + 는다)
+- 닫다 = 닫는다 = <span class="md spoiler">to close</span> (닫 + 는다)
 
 Examples:
 
-- 나는 문을 닫는다 = I close the door
+- 나는 문을 닫는다 = <span class="md spoiler">I close the door</span>
-- 나는 밥을 먹는다 = I eat rice
+- 나는 밥을 먹는다 = <span class="md spoiler">I eat rice</span>
 
 When the last syllable of the stem ends in a vowel, you add ~ㄴto the last syllable followed by 다
 
-- 배우다 = 배운다 = to learn (배우 + ㄴ다)
+- 배우다 = 배운다 = <span class="md spoiler">to learn</span> (배우 + ㄴ다)
-- 이해하다 = 이해한다 = to understand (이해하 + ㄴ다)
+- 이해하다 = 이해한다 = <span class="md spoiler">to understand</span> (이해하 + ㄴ다)
-- 가다 = 간다 = to go (가 + ㄴ다)
+- 가다 = 간다 = <span class="md spoiler">to go</span> (가 + ㄴ다)
 
 Examples:
 
-- 나는 친구를 만난다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-1-I-meet-friends.mp3" /> = I meet a friend
+- 나는 친구를 만난다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-1-I-meet-friends.mp3" /> = <span class="md spoiler">I meet a friend</span>
-- 나는 그것을 이해한다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-2-I-understand.mp3" /> = I understand that
+- 나는 그것을 이해한다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-2-I-understand.mp3" /> = <span class="md spoiler">I understand that</span>
-- 나는 한국어를 배운다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-3-I-learn-Korean.mp3" /> = I learn Korean
+- 나는 한국어를 배운다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-3-I-learn-Korean.mp3" /> = <span class="md spoiler">I learn Korean</span>
-- 나는 집에 간다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-4-I-go-home.mp3" /> = I go home
+- 나는 집에 간다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-4-I-go-home.mp3" /> = <span class="md spoiler">I go home</span>
 
 #### Past Tense
 
@@ -881,25 +920,25 @@ Notice that some of these grammatical principles require the addition of “~아
 
 When conjugating to the past tense, we need to add “~았/었다” to the stem of a word (or 였다 in the case of 하다). Following the rule above, ~았다 is added to words with the last vowel being ㅗ or ㅏ and ~었다 is added to words with the last vowel being anything but ㅏ or ㅗ. Finally, ~였다 is added to words with the last syllable being “하.” For example:
 
-나는 밥을 먹다 = I eat rice (note that this sentence is _unconjugated_)
+나는 밥을 먹다 = <span class="md spoiler">I eat rice</span> (note that this sentence is _unconjugated_)
 
 - The last vowel in the stem is ㅓ. This is not ㅏ or ㅗ. So, we add 었다 to the stem:
-- 나는 밥을 먹었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-6-I-ate-rice.mp3" /> = I ate rice (먹 + 었다)
+  - 나는 밥을 먹었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-6-I-ate-rice.mp3" /> = <span class="md spoiler">I ate rice</span> (먹 + 었다)
 
-나는 문을 닫다 = I close the door (note that this sentence is _unconjugated_)
+나는 문을 닫다 = <span class="md spoiler">I close the door</span> (note that this sentence is _unconjugated_)
 
 - The last vowel in the stem is ㅏ. So we add 았다 to the stem:
-- 나는 문을 닫았다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s4.mp3" /> = I closed the door (닫 + 았다)
+  - 나는 문을 닫았다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s4.mp3" /> = <span class="md spoiler">I closed the door</span> (닫 + 았다)
 
-나는 창문을 열다 = I open the window (note that this sentence is _unconjugated_)
+나는 창문을 열다 = <span class="md spoiler">I open the window</span> (note that this sentence is _unconjugated_)
 
 - The last vowel in the stem is ㅕ. This is not ㅏ or ㅗ. So we add 었다 to the stem:
-- 나는 창문을 열었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s5.mp3" /> = I opened the window (열 + 었다)
+  - 나는 창문을 열었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s5.mp3" /> = <span class="md spoiler">I opened the window</span> (열 + 었다)
 
-나는 한국어를 공부하다 = I study Korean (note that this sentence is _unconjugated_)
+나는 한국어를 공부하다 = <span class="md spoiler">I study Korean</span> (note that this sentence is _unconjugated_)
 
 - The last syllable in the stem is “하”. Therefore, we add ~였다 to the stem:
-- 나는 한국어를 공부하였다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s6.mp3" /> = I studied Korean (공부하 + 였다)
+  - 나는 한국어를 공부하였다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s6.mp3" /> = <span class="md spoiler">I studied Korean</span> (공부하 + 였다)
 
 What makes this complicated (at first) is that for verbs that have a last syllable that end in a vowel (including 하다), the ~았다/었다 gets merged to the actual stem itself. This is how ~아 and ~어 merge with syllables ending in a vowel:
 
@@ -921,9 +960,9 @@ Words where the last vowel is “ㅡ” (for example: 잠그다) are complicated
 
 Many people have asked me “how do I merge ~아/어 to complex vowels like ㅠ, ㅑ, ㅔ, etc…?” You will find that the stem of almost all verbs and adjectives in Korean do not end in these complex vowels. The most common words I can think of that have stem that ends in one of these complex vowels are:
 
-- 바래다 (to fade)
+- 바래다 (<span class="md spoiler">to fade</span>)
-- 매다 (to tie up)
+- 매다 (<span class="md spoiler">to tie up</span>)
-- 메다 (to put on/carry something on one’s shoulder)
+- 메다 (<span class="md spoiler">to put on/carry something on one’s shoulder</span>)
 
 With these words (and others like it), the same rule applies as above. That is, the final vowel does not end in ㅏ or ㅗ, so we need to add “어” plus whatever we are adding. With these complex vowels, it is irrelevant if you merge the addition to the stem. Both forms (merged and non-merged) would be correct.
 
@@ -937,72 +976,72 @@ For example:
 
 Here is a more detailed breakdown:
 
-가다 = to go
+가다 = <span class="md spoiler">to go</span>
 
 - The last vowel in the stem is ㅏ. So we add 았다 to the stem.
   - 나는 박물관에 가았다
 - But, because the stem ends in a vowel, 았다 can merge with 가:
-  - 나는 박물관에 갔다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s7.mp3" /> = I went to the museum
+  - 나는 박물관에 갔다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s7.mp3" /> = <span class="md spoiler">I went to the museum</span>
 
-오다 = to come
+오다 = <span class="md spoiler">to come</span>
 
 - The last vowel in the stem is ㅗ. So we add 았다 to the stem.
   - 삼촌은 가게에 오았다
 - But, because the stem ends in a vowel, 았다 can merge with 오:
-  - 삼촌은 가게에 왔다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s8.mp3" /> = (My) uncle came to the store
+  - 삼촌은 가게에 왔다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s8.mp3" /> = <span class="md spoiler">(My) uncle came to the store</span>
 
-배우다 = to learn
+배우다 = <span class="md spoiler">to learn</span>
 
 - The last vowel in the stem is ㅜ. So we add 었다 to the stem.
   - 오빠는 영어를 배우었다
 - But, because the stem ends in a vowel, 었다 can merge with 우:
-  - 오빠는 영어를 배웠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s9.mp3" /> = (My) older brother learned English
+  - 오빠는 영어를 배웠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s9.mp3" /> = <span class="md spoiler">(My) older brother learned English</span>
 
-던지다 = to throw
+던지다 = <span class="md spoiler">to throw</span>
 
 - The last vowel in the stem is ㅣ. So we add 었다 to the stem.
   - 나는 공을 던지었다
 - But, because the stem ends in a vowel, 었다 can merge with 지:
-  - 나는 공을 던졌다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-8-I-threw-the-ball.mp3" /> = I threw the ball
+  - 나는 공을 던졌다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-8-I-threw-the-ball.mp3" /> = <span class="md spoiler">I threw the ball</span>
 
-건너다 = to cross
+건너다 = <span class="md spoiler">to cross</span>
 
 - The last vowel in the stem is ㅓ. So we add 었다 to the stem.
   - 나는 길을 건너었다
 - But, because the stem ends in a vowel, 었다 can merge with 너:
-  - 나는 길을 건넜다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-9-I-crossed-the-street.mp3" /> = I crossed the street
+  - 나는 길을 건넜다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-9-I-crossed-the-street.mp3" /> = <span class="md spoiler">I crossed the street</span>
 
-만나다 = to meet
+만나다 = <span class="md spoiler">to meet</span>
 
 - The last vowel in the stem is ㅏ. So we add 았다 to the stem.
   - 나는 친구를 만나았다
 - But, because the stem ends in a vowel, 았다 can merge with 나:
-  - 나는 친구를 만났다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-5-I-met-friends.mp3" /> = I met friends
+  - 나는 친구를 만났다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-5-I-met-friends.mp3" /> = <span class="md spoiler">I met friends</span>
 
-공부하다 = to study
+공부하다 = <span class="md spoiler">to study</span>
 
 - The last vowel in the stem is 하. So, we add 였다 to the stem.
   - 나는 한국어를 공부하였다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s6.mp3" />
 - But, 하 and 여 can be merged to formed 해:
-  - 나는 한국어를 공부했다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-7-I-studied-Korean.mp3" /> = I studied Korean
+  - 나는 한국어를 공부했다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-7-I-studied-Korean.mp3" /> = <span class="md spoiler">I studied Korean</span>
 
 #### Future Tense
 
 Future tense is easy, and is simply a matter of adding “~겠다” to the stem of a word. Unlike the past and present tense conjugations, there is no difference if the stem ends in a vowel or a consonant. For example:
 
-나는 먹다 = I eat (_unconjugated_)
+나는 먹다 = <span class="md spoiler">I eat</span> (_unconjugated_)
 
-- 나는 먹겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s10.mp3" /> = I will eat
+- 나는 먹겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s10.mp3" /> = <span class="md spoiler">I will eat</span>
 
-나는 가다 = I go (_unconjugated_)
+나는 가다 = <span class="md spoiler">I go</span> (_unconjugated_)
 
-- 나는 가겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-11-I-will-go.mp3" /> = I will go
+- 나는 가겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-11-I-will-go.mp3" /> = <span class="md spoiler">I will go</span>
 
-나는 배우다 = I learn (_unconjugated_)
+나는 배우다 = <span class="md spoiler">I learn</span> (_unconjugated_)
 
-- 나는 배우겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-10-I-will-learn.mp3" /> = I will learn
+- 나는 배우겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-10-I-will-learn.mp3" /> = <span class="md spoiler">I will learn</span>
 
-Two verbs specifically that are often conjugated in the future tense without actually having a meaning in the future tenses are 알다(to know) and 모르다(to not know). I don’t want to make any example sentences (because they would be too complicated at this point), but it would be good to remember that the words 알다 and 모르다 are often conjugated to 알겠다 or 모르겠다. Although they are conjugated to the future tense, those two words are typically used to express that somebody knows/doesn’t know something in the present tense.
+Two verbs specifically that are often conjugated in the future tense without actually having a meaning in the future tenses are 알다 (<span class="md spoiler">to know</span>) and 모르다 (<span class="md spoiler">to not know</span>). I don’t want to make any example sentences (because they would be too complicated at this point), but it would be good to remember that the words 알다 and 모르다 are often conjugated to 알겠다 or 모르겠다. Although they are conjugated to the future tense, those two words are typically used to express that somebody knows/doesn’t know something in the present tense.
 
 Also note that the ending of the conjugation will often change as well depending on the different honorifics that you will learn in the [next lesson](./06-honorifics.md).
 
@@ -1024,9 +1063,9 @@ Check out the table giving a breakdown of verbs in the past, present and future
 
 You learned previously that you need to add ~ㄴ/는다 to a verb stem in order to conjugate it in the present tense. In order to conjugate an adjective into the present tense you don’t need to do anything! Just leave the adjective as it is, and it is conjugated in the present tense. Some examples:
 
-- 그 선생님은 아름답다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-teacher-is-beautiful.mp3" /> = that teacher is beautiful
+- 그 선생님은 아름답다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-teacher-is-beautiful.mp3" /> = <span class="md spoiler">that teacher is beautiful</span>
-- 그 길은 길다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-road-is-long.mp3" /> = that street is long
+- 그 길은 길다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-road-is-long.mp3" /> = <span class="md spoiler">that street is long</span>
-- 나의 손은 크다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-12-My-hands-are-big.mp3" /> = my hand is big
+- 나의 손은 크다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-12-My-hands-are-big.mp3" /> = <span class="md spoiler">my hand is big</span>
 
 #### Past tense
 
@@ -1034,10 +1073,10 @@ In order to conjugate adjectives to the past tense, you must follow the same rul
 
 You must add 았다 or 었다 to the stem of a word. 았다 is added to words with the last vowel being ㅗ or ㅏ, and 었다 is added to words with the last vowel being anything but ㅏ or ㅗ. For example:
 
-- 그 길은 길었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-road-was-long.mp3" /> = That street was long (길 + 었다)
+- 그 길은 길었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-road-was-long.mp3" /> = <span class="md spoiler">That street was long</span> (길 + 었다)
-- 그 음식은 맛있었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-food-was-delicious.mp3" /> = That food was delicious (맛있 + 었다)
+- 그 음식은 맛있었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-food-was-delicious.mp3" /> = <span class="md spoiler">That food was delicious</span> (맛있 + 었다)
-- 그 선생님은 좋았다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-teacher-was-good.mp3" /> = That teacher was good (좋 + 았다)
+- 그 선생님은 좋았다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-teacher-was-good.mp3" /> = <span class="md spoiler">That teacher was good</span> (좋 + 았다)
-- 그 식당이 오래되었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-13-That-restaurant-is-old.mp3" /> = That restaurant is old\*\*\* (오래되 + 었다)
+- 그 식당이 오래되었다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-13-That-restaurant-is-old.mp3" /> = <span class="md spoiler">That restaurant is old\*\*\*</span> (오래되 + 었다)
 
 ---
 
@@ -1049,23 +1088,23 @@ Also, while _되다_ is commonly used and conjugated as a verb, in this case, _
 
 For example:
 
-- 우리는 오래된 집에 갔다 = We went to the old house
+- 우리는 오래된 집에 갔다 = <span class="md spoiler">We went to the old house</span>
 
 ---
 
 Just like with verbs, if the final letter of a verb/adjective stem is a vowel, ~았다/었다 can be merged to the actual stem itself:
 
-- 이것은 비쌌다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/This-was-expensive.mp3" /> = This was expensive (비싸 + 았다)
+- 이것은 비쌌다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/This-was-expensive.mp3" /> = <span class="md spoiler">This was expensive</span> (비싸 + 았다)
-- 그 남자는 잘생겼다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-man-is-handsome.mp3" /> = That man was handsome (잘생기 + 었다)
+- 그 남자는 잘생겼다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-man-is-handsome.mp3" /> = <span class="md spoiler">That man was handsome</span> (잘생기 + 었다)
-- 그 사람은 뚱뚱했다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-person-was-fat.mp3" /> = That person was fat (뚱뚱하 + 였다)
+- 그 사람은 뚱뚱했다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-person-was-fat.mp3" /> = <span class="md spoiler">That person was fat</span> (뚱뚱하 + 였다)
 
 #### Future tense
 
 Conjugating adjectives into the future tense is the same as conjugating verbs into the future tense. All you need to do is add 겠다 to the stem of the adjective:
 
-- 나는 행복하겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-14-I-will-be-happy.mp3" /> = I will be happy
+- 나는 행복하겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-14-I-will-be-happy.mp3" /> = <span class="md spoiler">I will be happy</span>
-- 그것은 맛있겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-thing-is-delicious.mp3" /> = That thing will be delicious
+- 그것은 맛있겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2013/05/That-thing-is-delicious.mp3" /> = <span class="md spoiler">That thing will be delicious</span>
-- 나는 배고프겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-15-I-will-be-hungry.mp3" /> = I will be hungry
+- 나는 배고프겠다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/12/Lesson-5-15-I-will-be-hungry.mp3" /> = <span class="md spoiler">I will be hungry</span>
 
 In general, not only is this basic form rare in conversation, but Korean people do not use adjectives in the future as often as English speakers.
 
@@ -1087,23 +1126,23 @@ Check out the table giving a breakdown of adjectives in the past, present and fu
 
 있다 is an adjective when it is used to indicate that one “has” something. You learned these sentences in [Lesson 2](https://www.howtostudykorean.com/unit1/unit-1-lessons-1-8/unit-1-lesson-2/):
 
-- 나는 펜이 있다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s11.mp3" /> = I have a pen
+- 나는 펜이 있다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s11.mp3" /> = <span class="md spoiler">I have a pen</span>
-- 나는 차가 있다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s12.mp3" /> = I have a car
+- 나는 차가 있다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s12.mp3" /> = <span class="md spoiler">I have a car</span>
-- 나는 가방이 있다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s13.mp3" /> = I have a bag
+- 나는 가방이 있다 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2015/11/Lesson-5-s13.mp3" /> = <span class="md spoiler">I have a bag</span>
 
 Because this 있다 is considered an adjective, we follow the rule for conjugating an adjective to the present tense – which is do nothing and leave the adjective the way it is. So, those three sentences above are perfectly conjugated and grammatically correct.
 
 When 있다 is used to indicate that something/someone is “at/in” a location, it is also an adjective. This is also very difficult for an English speaker to wrap their head around. You learned these sentences in [Lesson 2](https://www.howtostudykorean.com/unit1/unit-1-lessons-1-8/unit-1-lesson-2/):
 
-- 나는 은행 안에 있다 = I am inside the bank
+- 나는 은행 안에 있다 = <span class="md spoiler">I am inside the bank</span>
-- 개는 집 안에 있다 = The dog is in the house
+- 개는 집 안에 있다 = <span class="md spoiler">The dog is in the house</span>
-- 고양이는 의자 밑에 있다 = The cat is under the chair
+- 고양이는 의자 밑에 있다 = <span class="md spoiler">The cat is under the chair</span>
 
 Again, because this usage of 있다 is considered an adjective, we follow the rule for conjugating an adjective to the present tense – which is do nothing and leave the adjective the way it is. So, those three sentences above are perfectly conjugated in the plain form and grammatically correct.
 
 However, the usage of 있다 is much more complex than just these two meanings. 있다 has _many_ usages. In fact, there are times when 있다 is considered a verb. At this point, your understanding of Korean is not strong enough to see example sentences of 있다 as a verb because you haven’t learned some critical grammatical principles yet. What I want you to take from this is that 있다 _can_ be a verb – and thus – is conjugated as a verb sometimes. Therefore, although the example sentences above with 있다 are properly conjugated, there are times when the proper conjugation of 있다 in the “plain form” would be 있는다.
 
-있다 is considered a verb when a person (or animal) is not only “at” a location, but “staying” at a location or in a state for a period of time. The difference between the adjective “있다” (to indicate something/someone is at a location) and the verb “있다” (to indicate that someone stays at a location or in a state) is confusing.
+있다 is considered a verb when a person (or animal) is not only “at” a location, but <span class="md spoiler">“staying”</span> at a location or in a state for a period of time. The difference between the adjective “있다” (to indicate something/someone is at a location) and the verb “있다” (to indicate that someone stays at a location or in a state) is confusing.
 
 Below are some complicated ways that 있다 can be seen as a verb. You absolutely do not need to understand these now. I suggest that you worry about them when you reach that particular lesson in your studies:
 
@@ -1117,7 +1156,7 @@ Wow, that is a lot of grammar. Understanding this will probably be your the hard
 <em>There are 1250 example sentences in Unit 1.
 All entries are linked to an audio file. You can download all of these files in one package [here](https://www.howtostudykorean.com/audio/).</em>
 
-[Okay, I got it! Take me to the next lesson!](https://www.howtostudykorean.com/?page_id=291) Or,
+[Okay, I got it! Take me to the next lesson!](./06-honorifics.md) Or,
 [Click here for a workbook to go along with this lesson.](https://www.howtostudykorean.com/workbooks#Unit118)
 
 ## Summary