Korean Comprehensible Input: One Sentence, Five Levels (A0 to B2)

Most “level-appropriate” Korean content has the same flaw: you only ever see your own level. You read your A2 text, then your B1 text, and the jump between them feels like a wall, because nobody showed you what actually changed.

This article does the opposite. Take one small scene and write it five times, getting a little richer each time. Nothing about the scene changes. Only the Korean around it does. That way, “more advanced” stops being a vague label and becomes something you can point at: this word, this ending, this extra clause.

You’ll see three scenes in total: a tiger, a cat, and a person in a cafe. The first is a tiger because I wanted something easy to picture. The last is about you, because that’s where this technique ends up being most useful.

How to use this article

Don’t read the breakdowns first. For each scene below:

1. Read the five Korean sentences, A0 through B2, in order.
2. Try to guess what’s happening before you check anything.
3. Only then scroll to the breakdowns.

At A0 and A1, you’ll get the English translation. From A2 on, you won’t, on purpose. The breakdowns explain every piece, so by the time you finish reading one, you can rebuild the meaning of the whole sentence yourself. That’s a better test of understanding than comparing against a translation, and it’s the exact skill you want: reading a sentence in Korean and building meaning from the parts instead of waiting for English to rescue you. (If that’s a struggle for you, How to Stop Translating Korean in Your Head goes into why.)

Scene 1: The tiger

A0: 호랑이가 숲에서 걸어요.

A1: 호랑이가 숲에서 천천히 걸어요.

A2: 큰 호랑이가 조용한 숲속을 천천히 걷고 있어요.

B1: 배고픈 호랑이가 먹이를 찾으려고 어두운 숲속을 조용히 걸어가고 있습니다.

B2: 해가 지자 굶주린 호랑이 한 마리가 먹잇감을 찾아 울창한 숲속을 소리 없이 걸어 다니고 있다.

Scene 2: The cat

A0: 고양이가 자요.

A1: 고양이가 창가에서 자요.

A2: 작은 고양이가 따뜻한 창가에서 자고 있어요.

B1: 졸린 고양이가 따뜻한 햇빛을 받으려고 창가에 조용히 누워 있습니다.

B2: 비가 그치자 졸린 고양이 한 마리가 햇빛이 드는 창가에 몸을 동그랗게 말고 누워 있다.

Scene 3: The cafe

A0: 저는 커피를 마셔요.

A1: 저는 카페에서 커피를 마셔요.

A2: 저는 조용한 카페에서 따뜻한 커피를 마시고 있어요.

B1: 저는 피곤해서 잠을 깨려고 조용한 카페에서 진한 커피를 마시고 있어요.

B2: 비 오는 오후라 사람이 별로 없는 카페 구석에서, 졸음을 쫓으려고 진한 커피를 홀짝이고 있어요.

The A0 and A1 translations

Here’s what the first two levels of each scene mean. These are the only full translations you’ll get.

• 호랑이가 숲에서 걸어요. = The tiger walks in the forest.
• 호랑이가 숲에서 천천히 걸어요. = The tiger walks slowly in the forest.
• 고양이가 자요. = The cat sleeps.
• 고양이가 창가에서 자요. = The cat sleeps by the window.
• 저는 커피를 마셔요. = I drink coffee.
• 저는 카페에서 커피를 마셔요. = I drink coffee at a cafe.

Compare each A0 to its A1. Exactly one thing changed: a new piece of information got attached. In the tiger scene it’s 천천히 (slowly), and in the other two it’s a location. That’s the whole trick, repeated at every level.

Breakdown: the tiger

A0 → A1: one added detail

A0 is the skeleton: 호랑이가 (tiger + subject marker) 숲에서 (forest + the place where an action happens) 걸어요 (walks). If those particles feel shaky, The Basics: Particles (Part 1) covers -이/가 and -에서 in detail.

A1 adds 천천히 (slowly), an adverb that answers “how?” It slots in right before the verb.

A1 → A2: describing the nouns, and an ongoing action

Four things got added here.

• 큰 호랑이가: 크다 (to be big) became 큰, which attaches directly in front of the noun. This is a noun modifier, covered in The Basics: Noun Modifiers and Essential Verb Endings.
• 조용한 숲속을: 조용하다 (to be quiet) became 조용한 the same way. Also notice 숲속, which is just 숲 (forest) + 속 (inside) glued together, the kind of chunking covered in 물, 손, 발: Native Korean Word Roots That Aren’t Hanja. The particle also changed: 을 instead of 에서, because the tiger is moving through the forest, not just standing somewhere in it.
• 천천히: carried over unchanged from A1.
• 걷고 있어요: 걷다 + -고 있다 means “is in the middle of walking.” It turns a plain action into an ongoing one.

A2 → B1: a reason, and a more formal voice

• 배고픈 호랑이가: 배고프다 (to be hungry) → 배고픈. The tiger now has a state.
• 먹이를 찾으려고: 먹이 is food, specifically what an animal eats. 찾다 (to look for) + -(으)려고 means “in order to” or “intending to.” It’s the big new idea at this level: the tiger isn’t just walking, it’s walking for a reason. Since 찾 ends in a consonant, it takes -으려고.
• 어두운 숲속을: 어둡다 (to be dark) → 어두운. This is a ㅂ-irregular adjective: ㅂ disappears and 우 appears before the modifier ending.
• 조용히: the adverb form of 조용하다. Compare 조용한 (adjective, in front of a noun) from A2 with 조용히 (adverb, in front of a verb). Same root, different job.
• 걸어가고 있습니다: 걸어가다 is 걷다 + 가다, “to go by walking,” so the tiger is walking along. The ending -고 있습니다 is the formal version of -고 있어요, the register you’d hear in narration or the news.

B1 → B2: time, precision, and written style

• 해가 지자: 해 (sun) + 지다 (to set) + -자 (“as soon as,” “once”). A whole new clause appears, setting when this is happening. If connecting clauses feels new, The Basics: Connecting Sentences (Part 1) covers the family of endings this belongs to.
• 굶주린 호랑이 한 마리가: 굶주리다 (to be starving) is a stronger, more vivid word than 배고프다. 한 마리 is “one” plus the counter for animals. Korean Numbers: Counting, Prices, Dates, and Age explains why Korean needs counters like this.
• 먹잇감을 찾아: 먹잇감 is 먹이 + 감 (material, target), so “prey.” 찾아 replaces 찾으려고. Instead of “in order to find,” it reads more like “searching for,” which is smoother in written narration.
• 울창한 숲속을: 울창하다 (to be lush, densely wooded).
• 소리 없이: 소리 (sound) + 없이 (without). It replaces 조용히 and says the same thing in a more visual way.
• 걸어 다니고 있다: 걸어 다니다 means to walk around, not just to walk along. The sentence ends in -다 instead of -습니다 or -어요. That’s the plain written form, the voice of novels and narration, not conversation.

Breakdown: the cat

A1 → A2: 작은 (작다, small), 따뜻한 (따뜻하다, warm), and 자고 있어요 (자다 + -고 있다, “is sleeping”). Same moves as the tiger: two descriptions and one ongoing action.

A2 → B1:

• 졸린: 졸리다 (to feel sleepy) → 졸린.
• 햇빛을 받으려고: 햇빛 (sunlight) + 받다 (to receive) + -(으)려고. Same “in order to” pattern as the tiger, so the cat is lying there to soak up the sun.
• 창가에 … 누워 있습니다: 에 marks where the cat is, not where an action takes place. 눕다 (to lie down) becomes 누워 (another ㅂ-irregular), and -아/어 있다 describes a resulting state: “lying there.”

B1 → B2:

• 비가 그치자: 비 (rain) + 그치다 (to stop) + -자. The same “as soon as” structure as the tiger’s time clause.
• 햇빛이 드는 창가: 들다 (to come in, to enter) as a present modifier, so “the window sill where sunlight comes in.” This is a whole description packed in front of one noun.
• 몸을 동그랗게 말고: 몸 (body) + 동그랗게 (roundly, from 동그랗다) + 말고 (말다, to curl up, joined with -고). Together: “curling its body into a ball and lying there.”

Breakdown: the cafe

A1 → A2: 조용한 and 따뜻한 modify the nouns, and 마시고 있어요 is the “is drinking” form. Same moves as before.

A2 → B1:

• 피곤해서: 피곤하다 (to be tired) + -아/어서, “because.” This is the reason clause. See Connecting Sentences (Part 1).
• 잠을 깨려고: 잠 (sleep) + 깨다 (to wake up, to shake off) + -려고. Here the stem 깨 ends in a vowel, so it’s -려고, not -으려고.
• 진한 커피: 진하다 (strong, rich) → 진한, describing the coffee.

B1 → B2:

• 비 오는 오후라: 비 오는 is “raining” as a modifier, 오후 is afternoon, and -(이)라 attached to a noun means “since it’s.” The cafe’s rainy-afternoon mood is built in one tiny clause.
• 사람이 별로 없는 카페 구석에서: 별로 + 없다 means “not really any,” and 없는 is its modifier form describing the cafe. 구석 means corner.
• 졸음을 쫓으려고: 졸음 (sleepiness) + 쫓다 (to chase away) + -으려고. This upgrades “to wake up” into “to chase away drowsiness.”
• 홀짝이고 있어요: 홀짝이다 means to sip. It replaces the generic 마시다 with something that actually carries a mood.

How to build your own

This is the part that makes the technique worth more than the examples above. You can do this with any sentence, in any topic, forever.

Going up: take a simple sentence and add one layer at a time.

1. Start with the skeleton. Who or what, plus a verb. 고양이가 자요.
2. Add where or how. A location (창가에서) or an adverb (천천히).
3. Describe the nouns. Put an adjective in front (작은, 따뜻한).
4. Make the action ongoing, or give it a time. -고 있다, or a time word.
5. Add a reason or a purpose. -(으)려고, -아/어서.
6. Add a time clause, and swap generic words for specific ones. -자, a stronger verb, a more precise adjective.

Add only one layer per pass. If you add three at once, you won’t be able to tell which one is making the sentence hard.

Going down: take a sentence you can’t read and strip it back. The opposite direction works just as well. If you hit a long, intimidating sentence in a drama subtitle or a webtoon, delete the modifiers first, then the clauses, until you’re left with the skeleton. Once you understand the skeleton, add the layers back in one by one. It’s the same ladder, just climbed from the top.

Use things you care about. This is the part that decides whether you stick with it. A tiger is a fine example, but a tiger is not your life. Write the scene about your dog, your game character, the show you’re watching, the thing you actually did this morning. Sentences about things you care about are the ones you’ll remember, and they’re the ones you’ll still be building a year from now.

Read it out loud, and record it. A sentence you’ve built is also a sentence you can say. Practice Korean Pronunciation: Listen, Record, Compare is a good workflow for turning your finished A2 or B1 sentence into speaking practice.

This is comprehensible input, with one change: the progression is visible. You always know exactly what the next layer is, and you can see how far you’ve come, instead of spending hours inside text that feels the same difficulty all the way through. When progress is that easy to see, it’s much harder to quit.

Now say it yourself

Go back to the tiger and answer these out loud, in Korean, using whichever level feels comfortable. Don’t write the answers down first.

• What is the tiger doing?
• Why is it walking through the forest?
• What can the tiger hear?
• What happens when the fog arrives?
• Describe the scene using your own words.

Start at A1 if you need to. Then add one layer. Then another. If you want a new scenario to build from every day, instead of inventing your own, 30 Days of Korean Speaking is built for exactly that.