ㅂ irregular: ㅂ drops → 우 is added → then 었어요 (맵다 → 매우 → 매웠어요) ㄷ irregular: ㄷ changes to ㄹ → then 었어요 (듣다 → 들 → 들었어요) ㅡ irregular: ㅡ drops → last vowel of the stem before it decides 았/었 (바쁘다 → 바ㅏ + ㅏ → 바빴어요)
⚡ Quick Reference
았어요stem has ㅏ/ㅗ → 가다→갔어요, 오다→왔어요, 보다→봤어요
었어요all other vowels → 먹다→먹었어요, 마시다→마셨어요
했어요하다 verbs → 공부하다→공부했어요, 일하다→일했어요
irregular맵다→매웠어요 (ㅂ), 듣다→들었어요 (ㄷ), 바쁘다→바빴어요 (ㅡ)
💬 Real Conversation
A: 어제 뭐 했어요?
eo-je mwo hae-sseo-yo?
What did you do yesterday?
B: 친구 만났어요.
chin-gu man-na-sseo-yo.
I met a friend.
A: 어디 갔어요?
eo-di ga-sseo-yo?
Where did you go?
B: 카페에 갔어요.
ka-pe-e ga-sseo-yo.
We went to a café.
✏️ Practice — Past Tense
👏
4-1 done — you can talk about the past!
잘했어요! Past tense is one of the biggest building blocks in Korean — solid work.
ㅏ/ㅗ stem → 았어요 · everything else → 었어요 · 하다 → 했어요
Watch for irregulars: ㅂ (맵다→매웠어요), ㄷ (듣다→들었어요), ㅡ (바쁘다→바빴어요)
4-2 ⏩ Future & Promises
갈 거예요 vs 갈게요 — plans vs promises
📅 ㄹ/을 거예요 plan / prediction
~ㄹ 거예요
Use for: your own plans, or predicting what will happen. No 받침 → + ㄹ 거예요 | 받침 → + 을 거예요
가다 → 갈 거예요
gal geo-ye-yo
I'm going to go
먹다 → 먹을 거예요
meo-geul geo-ye-yo
I'm going to eat
공부하다 → 공부할 거예요
gong-bu-hal geo-ye-yo
I'm going to study
오다 → 올 거예요
ol geo-ye-yo
It's going to come
읽다 → 읽을 거예요
il-geul geo-ye-yo
I'm going to read
만나다 → 만날 거예요
man-nal geo-ye-yo
I'm going to meet
여행하다 → 여행할 거예요
yeo-haeng-hal geo-ye-yo
I'm going to travel
🤝 ㄹ/을게요 promise / offer
~ㄹ게요
Use for: promises you're making TO someone, or offering to do something.
About the speaker's own action (I will…)
전화하다 → 전화할게요
jeon-hwa-hal-ge-yo
I'll call you
가다 → 갈게요
gal-ge-yo
I'll go
도와주다 → 도와줄게요
do-wa-jul-ge-yo
I'll help you
기다리다 → 기다릴게요
gi-da-ril-ge-yo
I'll wait
연락하다 → 연락할게요
yeol-la-kal-ge-yo
I'll be in touch
사다 → 살게요
sal-ge-yo
I'll buy it
조심하다 → 조심할게요
jo-sim-hal-ge-yo
I'll be careful
💡 Key Difference
갈 거예요 = "I'm going to go" — informing someone of your plan 갈게요 = "I'll go" — promising or offering in response to the situation
Think of it this way: 거예요 is a plan, 게요 is a promise.
💬 Real Conversation
A: 내일 시간 있어요?
nae-il si-gan i-sseo-yo?
Are you free tomorrow?
B: 네, 공부할 거예요.
ne, gong-bu-hal geo-ye-yo.
Yes, I'm going to study.
A: 같이 카페 갈까요?
ga-chi ka-pe gal-kka-yo?
Shall we go to a café together?
B: 좋아요! 제가 먼저 갈게요.
jo-a-yo! je-ga meon-jeo gal-ge-yo.
Great! I'll go first.
✏️ Practice — Future & Promises
👏
4-2 done — you can talk about the future!
잘하고 있어요! Now you can make plans, predictions, and promises in Korean.
거예요 = plan/prediction · 게요 = promise/offer (about the speaker: "I will…")
No bottom consonant → ㄹ거예요/ㄹ게요 · bottom consonant → 을거예요
4-3 🚫 Negation — 부정
안 (won't / don't) vs 못 (can't)
안 — won't / don't
안
Plain negation — "don't / won't".
Often a choice or habit (you could, but you don't), and also simple "not".
저는 고기를 안 먹어요.
jeo-neun go-gi-reul an meo-geo-yo.
I don't eat meat (by choice).
저는 술을 안 마셔요.
jeo-neun su-reul an ma-syeo-yo.
I don't drink alcohol.
오늘은 안 가요.
o-neu-reun an ga-yo.
I'm not going today.
저는 커피를 안 마셔요.
jeo-neun keo-pi-reul an ma-syeo-yo.
I don't drink coffee.
오늘 운동을 안 해요.
o-neul un-dong-eul an hae-yo.
I'm not exercising today.
못 — can't
못
Can't — inability or impossibility.
Blocked by ability, circumstances, or something in the way.
오늘은 못 가요.
o-neu-reun mot ga-yo.
I can't go today (I'm unable to).
한국어를 아직 못 해요.
han-gu-geo-reul a-jik mot hae-yo.
I can't speak Korean yet.
너무 매워서 못 먹어요.
neo-mu mae-wo-seo mot meo-geo-yo.
It's too spicy so I can't eat it.
바빠서 전화를 못 해요.
ba-ppa-seo jeon-hwa-reul mot hae-yo.
I'm too busy to call.
어제 잠을 못 잤어요.
eo-je ja-meul mot ja-sseo-yo.
I couldn't sleep last night.
💡 Pattern
Simply place 안 or 못 directly before the verb:
저는 + 고기를 + 안 + 먹어요
오늘 + 못 + 가요
Exception: 하다 verbs → 안 해요 / 못 해요 (or sometimes 공부 안 해요)
💬 Real Conversation
A: 같이 밥 먹을까요?
ga-chi ba meo-geul-kka-yo?
Shall we eat together?
B: 오늘은 못 가요. 바빠요.
o-neu-reun mot ga-yo. ba-ppa-yo.
I can't today. I'm busy.
A: 고기 어때요?
go-gi eo-ttae-yo?
How about meat?
B: 저는 고기 안 먹어요.
jeo-neun go-gi an meo-geo-yo.
I don't eat meat.
✏️ Practice — 안 vs 못
👏
4-3 done — negation unlocked!
수고했어요! Now you can say no — by choice or by circumstance.
안 = won't / don't (your choice) · 못 = can't (unable to)
하다 verbs split: 안 해요 / 못 해요
4-4 🔗 Connecting Ideas
Link sentences with word connectors and grammar endings
Same vowel rule as present tense (ㅏ/ㅗ → 아서, others → 어서). 하다 → 해서.
피곤해서 일찍 잤어요.
pi-gon-hae-seo il-jjik ja-sseo-yo.
I was tired so I slept early.
배고파서 밥을 먹어요.
bae-go-pa-seo ba-beul meo-geo-yo.
I'm hungry so I eat.
늦어서 택시를 탔어요.
neu-jeo-seo taek-si-reul ta-sseo-yo.
I was late so I took a taxi.
아파서 병원에 갔어요.
a-pa-seo byeong-wo-ne ga-sseo-yo.
I was sick so I went to the hospital.
~지만
but / although (contrast within one sentence)
Attach to verb stem directly. Shows contrast in a single sentence.
한국어가 어렵지만 재미있어요.
han-gu-geo-ga eo-ryeop-ji-man jae-mi-i-sseo-yo.
Korean is hard but fun.
비싸지만 맛있어요.
bi-ssa-ji-man ma-si-sseo-yo.
It's expensive but delicious.
바쁘지만 운동해요.
ba-ppeu-ji-man un-dong-hae-yo.
I'm busy but I exercise.
늦었지만 갔어요.
neu-jeot-ji-man ga-sseo-yo.
It was late but I went.
✏️ Practice — Connectors
👏
4-4 done — your sentences just got longer!
잘했어요! Connecting ideas is what turns short phrases into real conversation.
그리고/그래서/그런데/그렇지만 connect two full sentences
~고/~아서·어서/~지만 attach directly onto a verb stem
4-5 ❓ Question Words — 의문사
뭐·어디·언제·왜·누구·어떻게·얼마·몇 시
뭐
mwo
What?
어디
eo-di
Where?
언제
eon-je
When?
왜
wae
Why?
누구
nu-gu
Who?
어떻게
eo-tteo-ke
How?
얼마
eol-ma
How much?
몇 시
myeot-si
What time?
💡 Word Order Tip
Korean question words go where the answer would be in the sentence.
뭐 먹어요? → 밥 먹어요. · 어디 가요? → 학교 가요. · 언제 와요? → 내일 와요.
No need to rearrange the sentence — just swap the question word in!
뭐
뭐 먹어요?
mwo meo-geo-yo?
What do you eat?
뭐
이름이 뭐예요?
i-reu-mi mwo-ye-yo?
What's your name?
어디
어디 가요?
eo-di ga-yo?
Where are you going?
어디
화장실이 어디예요?
hwa-jang-si-ri eo-di-ye-yo?
Where's the bathroom?
언제
언제 와요?
eon-je wa-yo?
When are you coming?
언제
생일이 언제예요?
saeng-i-ri eon-je-ye-yo?
When's your birthday?
왜
왜 안 와요?
wae an wa-yo?
Why aren't you coming?
왜
왜 늦었어요?
wae neu-jeo-sseo-yo?
Why were you late?
누구
누구예요?
nu-gu-ye-yo?
Who is it?
누구
저 사람은 누구예요?
jeo sa-ra-meun nu-gu-ye-yo?
Who is that person?
어떻게
어떻게 가요?
eo-tteo-ke ga-yo?
How do you get there?
어떻게
이거 어떻게 먹어요?
i-geo eo-tteo-ke meo-geo-yo?
How do I eat this?
얼마
이거 얼마예요?
i-geo eol-ma-ye-yo?
How much is this?
얼마
전부 얼마예요?
jeon-bu eol-ma-ye-yo?
How much is it all together?
몇 시
지금 몇 시예요?
ji-geum myeot si-ye-yo?
What time is it now?
몇 시
몇 시에 문 열어요?
myeot si-e mun yeo-reo-yo?
What time do you open?
✏️ Practice — Question Words
👏
4-5 done — now you can ask anything!
잘했어요! Question words let you get information, directions, and prices wherever you go.
뭐 / 어디 / 언제 / 왜 / 누구 / 어떻게 / 얼마 / 몇 시 — drop the question word right where the answer would go
No need to rearrange the sentence like in English
4-6 🙏 Everyday Expressions
주세요 & essential polite expressions
💡 주세요 — The Magic Phrase
주세요 (ju-se-yo) means "please give me" and is used for almost every request.
Just say what you want + 주세요. It works everywhere: cafés, restaurants, shops, taxis.
주세요 — Requesting things
1
물 주세요.
mul ju-se-yo.
Water, please.
2
메뉴 주세요.
me-nyu ju-se-yo.
Menu, please.
3
영수증 주세요.
yeong-su-jeung ju-se-yo.
Receipt, please.
4
이거 주세요.
i-geo ju-se-yo.
I'll take this, please.
5
물 좀 더 주세요.
mul jom deo ju-se-yo.
A little more water, please.
6
계산해 주세요.
gye-san-hae ju-se-yo.
Check / bill, please.
7
빨리 해주세요.
ppal-li hae-ju-se-yo.
Please do it quickly.
8
잠깐만 기다려 주세요.
jam-kkan-man gi-da-ryeo ju-se-yo.
Please wait a moment.
9
봉투 하나 주세요.
bong-tu ha-na ju-se-yo.
One bag, please.
10
창문 좀 열어 주세요.
chang-mun jom yeo-reo ju-se-yo.
Please open the window.
11
다시 한번 말해 주세요.
da-si han-beon mal-hae ju-se-yo.
Please say it one more time.
12
사진 좀 찍어 주세요.
sa-jin jom jji-geo ju-se-yo.
Please take a photo for me.
Counting Things — 단위명사 (Counters)
💡 Korean Has Two Number Systems
When counting things, people, or actions (not phone numbers or dates), Korean uses
native Korean numbers (하나, 둘, 셋…) — and the first four change shape before a counter word:
하나→한, 둘→두, 셋→세, 넷→네 (5 and up stay the same: 다섯, 여섯…)
개
gae
general items
명 / 분
myeong / bun
people (분 = polite)
잔
jan
cups / glasses
병
byeong
bottles
장
jang
sheets / tickets
권
gwon
books
마리
ma-ri
animals
살
sal
years old (age)
개
사과 한 개 주세요.
sa-gwa han gae ju-se-yo.
One apple, please. (하나 → 한)
명
두 명이에요.
du myeong-i-e-yo.
It's for two people. (둘 → 두)
잔
아메리카노 한 잔 주세요.
a-me-ri-ka-no han jan ju-se-yo.
One americano, please.
병
물 두 병 주세요.
mul du byeong ju-se-yo.
Two bottles of water, please.
장
티켓 세 장 주세요.
ti-ket se jang ju-se-yo.
Three tickets, please. (셋 → 세)
살
저는 스물다섯 살이에요.
jeo-neun seu-mul-da-seot sa-ri-e-yo.
I'm 25 years old.
⏰ Exception: Telling Time Mixes Both Systems
시 (hour) uses native numbers, but 분 (minute) uses Sino-Korean numbers:
한 시 삼십 분 (1:30 — 한 is native, 삼십 is Sino-Korean)
✏️ Practice — Counters
When to Use Which Speech Level — 존댓말 vs 반말
⚠️ Default Rule for Foreign Learners
When in doubt, default to 해요체 (이에요/해요/주세요 style — what this whole course teaches).
It's polite and safe with everyone: strangers, coworkers, people older than you, service staff.
Speech Level
Example
Use With
합니다체 (formal)
감사합니다, 갑니다 gam-sa-ham-ni-da, gam-ni-da
Announcements, news, business presentations, military
해요체 (polite) ✅
고마워요, 가요 go-ma-wo-yo, ga-yo
Everyday default — strangers, coworkers, elders, customer service
반말 (casual)
고마워, 가 go-ma-wo, ga
Close friends & younger family only after they say it's okay
🚫 Common Mistake to Avoid
Don't switch to 반말 just because someone seems friendly or close in age. Speech level depends on several things together — age, social position, how close you are, the situation, and especially mutual agreement.
Wait until the other person explicitly says "반말 해도 돼요" (it's okay to speak casually) before dropping 요.
Essential Social Expressions
Situation
Formal
Polite
Meaning
Thank you
감사합니다
고마워요 go-ma-wo-yo
Thank you
Sorry
죄송합니다
미안해요 mi-an-hae-yo
Sorry
Excuse me
실례합니다
저기요 jeo-gi-yo
Excuse me (to call attention)
It's okay
괜찮습니다
괜찮아요 gwaen-cha-na-yo
It's okay / I'm fine
I don't understand
모르겠습니다
모르겠어요 mo-reu-ge-sseo-yo
I don't know / understand
Please say it again
다시 말씀해 주세요
다시 말해줘요 da-si mal-hae-jwo-yo
Please say it again
Congratulations
축하드립니다
축하해요 chu-ka-hae-yo
Congratulations
Welcome
환영합니다
어서 오세요 eo-seo o-se-yo
Welcome (said to guests)
Take care
안녕히 가십시오
안녕히 가세요 an-nyeong-hi ga-se-yo
Goodbye (to person leaving)
✏️ Practice — Expressions
👏
4-6 done — you sound polite and natural now!
정말 잘했어요! Counters and formal speech are what make you sound like a real Korean speaker, not a textbook.
주세요 ("please give me") works in almost any situation
Counters change before counter words: 하나→한, 둘→두, 셋→세 (한 개, 두 명, 세 잔)
When in doubt, default to 해요체 — never assume 반말 is okay with someone new
4-7 💬 Real Conversations
10 essential sentences for 5 real-life situations
👏
4-7 done — 50 real phrases learned!
대단해요! You've now seen everything from Level 4 used in real café, restaurant, shopping, directions, and friend conversations.
You've covered 5 real-life situations with 10 phrases each
The vocab tags show how each verb conjugates in context
4-8 🎮 Sentence Builder Game
Arrange the Korean words in the correct order
—
Question 1 / 30
Click words below to build the sentence
0
Correct
0
Wrong
👏
4-8 done — great practice!
진짜 잘했어요! Building full sentences from scratch is the best way to make everything in Level 4 stick.
You practiced combining tense, negation, connectors, and questions together
If a sentence felt hard, go back and review that chapter
🎉
Level 4 Complete!
Amazing! You can now speak in past and future tense, connect ideas, ask all the essential questions,
and hold real conversations in Korean. You're ready for advanced grammar and natural speech!
⏪ Past Tense⏩ Future Plans🤝 Promises🚫 Negation🔗 Connectors❓ Questions🙏 주세요💬 Real Conversations