-는 한 Grammar in Korean: Meaning and How to Use It

What you'll learn

• Attach -는 한 to verbs, adjectives and nouns.
• Use -지 않는 한 for "unless".
• Recognise 가능한 한 and 내가 아는 한 as set phrases.
• Choose between -는 한, -(으)면 and -(으)ㄴ/는 이상.

Prerequisites: the condition ending -(으)면 and modifier endings. Time: about 15 minutes.

Key facts

• -는 한 means "as long as": the result holds only while the stated state lasts.
• The word before 한 is a modifier: 는 for a verb, (으)ㄴ for an adjective, 인 for a noun.
• -지 않는 한 means "unless": the result holds unless that one thing happens (비가 오지 않는 한 소풍은 갈 거예요).
• 한 is a separate word, so write a space before it.
• It is for continuing states, not for single, finished events.

Listen to two model sentences.

The next section defines the pattern.

What Does -는 한 Grammar Mean?

-는 한 means "as long as" or "to the extent that". A connective ending is a word or ending that joins one clause to the next. 한 is a bound noun, which means a noun that cannot stand alone and always needs a modifier in front of it. It comes from a Sino-Korean word (限) that means "limit", so the pattern says: "This is the limit within which the result holds."

The speaker is setting a boundary. As long as the state inside the boundary stays true, the result stays true. If the state ends, the promise or claim may end too. That is why the pattern often appears with words like 계속 ("continuously") and 변함없이 ("without change").

Here are two glossed examples.

The first sentence is casual (the ending -(으)ㄹ 거야 is used with friends). The second uses the polite ending -어요. The pattern works in both.

In both sentences, the first clause sets a limit and the second clause holds inside it. The limit can be a time ("while you keep trying") or a range of knowledge ("as far as I know").

The next section shows how to build the form.

How Do You Form -는 한?

Put a modifier in front of 한. A modifier is a verb or adjective changed so that it describes a noun. Take the stem, which is the dictionary form without 다, and add the modifier ending.

Two sound facts help you read these. First, 노력하는 and 허락하는 contain ㄱ and ㅎ, which blend into an aspirated ㅋ: [노려카는], [허라카는]. Revised Romanization (RR) is a spelling system that writes sounds in Latin letters. RR writes this aspiration in predicates, so it shows noryeokaneun and heorakaneun. Second, 않는 is said [안는], and RR writes anneun.

Stems Ending in a Vowel

Vowel stems take 는 directly: 가는 한, 오는 한, 노력하는 한. For verbs made with 하다, add 는 to 하: 허락하는 한, 건강을 유지하는 한. You do not need to change 하 to 해.

Stems Ending in a Consonant

Consonant stems also take 는 directly: 먹는 한, 있는 한. There is no 으, because 는 does not need one. The existential words 있다 and 없다 follow this rule even though they look like adjectives.

Irregular Stems and Nouns

The ㄹ stems drop ㄹ before 는: 알다 gives 아는 한, 살다 gives 사는 한, and 만들다 gives 만드는 한. The ㅂ stems do not change before 는: 돕다 gives 돕는 한, because 는 starts with a consonant.

For adjectives, the modifier is (으)ㄴ: 가능하다 gives 가능한, and 필요하다 gives 필요한. This is the only place adjectives are common, mostly in set phrases such as 가능한 한.

For nouns, use 이다, which means "to be". A noun takes 인 whether it ends in a vowel or a consonant: 학생인 한 and 어른인 한. The negative is 아닌 한: 학생이 아닌 한 means "as long as you are not a student".

The negative form needs care. For verbs, the pattern is -지 않는 한, which means "unless": 비가 오지 않는 한 소풍은 갈 거예요 ("Unless it rains, we will go on the picnic"). For adjectives, it is -지 않은 한: 건강하지 않은 한 means "as long as you are not healthy".

The next section builds a full sentence.

Worked Example: Building 노력하지 않는 한 성공할 수 없어요

Say "Unless you try, you cannot succeed." Follow five steps.

1. Write the condition. "You don't try" uses the verb 노력하다, "to make an effort", with the negative -지 않다.
2. Make the stem negative. 노력하다 becomes 노력하지 않다. The stem of the negative is 노력하지 않.
3. Make the modifier. A verb takes 는 before 한, so 않다 becomes 않는: 노력하지 않는.
4. Add 한. 노력하지 않는 한 means "as long as you don't try", or "unless you try". Leave a space before 한.
5. Write the result. Here the result says what cannot happen: 성공할 수 없어요 ("you cannot succeed"). Join the two parts: 노력하지 않는 한 성공할 수 없어요.

You'll know it worked when the first clause ends in 한 with nothing after it, and the polite ending 요 appears only once, at the end. Read the whole sentence as "unless" and check that it makes sense. Try the same steps with "Unless the rule changes, the problem will not disappear": 규칙이 바뀌지 않는 한 문제는 사라지지 않을 거예요.

The next section covers tense and sentence types.

Which Tenses and Sentence Types Work with -는 한?

The pattern is built for states that are true now and keep going. So the modifier is almost always the present form 는 (for verbs) or (으)ㄴ (for adjectives and nouns). The time of the whole sentence is shown by the main clause. The future forms are explained on their own pages: future tense -(으)ㄹ 거예요 and future guess -겠-.

Unlike many reason patterns, -는 한 lets you end with a statement, a promise, a request, a question or a suggestion. A yes/no question ends with a rise. A wh-question, for example 누가 도와줄 수 있어요, does not end with a sharp rise.

The pattern works with an honorific marker too: 선생님이 허락하시는 한 갈게요 means "I'll go as long as the teacher permits." Past tense -았/었- is explained in full on its own page, but this pattern does not use it. For a finished event, use a reason pattern.

The next section compares -는 한 with its neighbours.

How Is -는 한 Different from -(으)면?

All three patterns below can be translated as "if" or "as long as", and that is why learners mix them up. The difference is how the first clause works. The same help promise is told three ways.

Spoken forms: 네가 노력하면 나는 도울 거야 is [네가 노려카면 나는 도울꺼야] (RR nega noryeokamyeon naneun doul geoya), and 약속한 이상 지켜야 해요 is [약쏘카니상 지켜야 해요] (RR yaksokan isang jikyeoya haeyo).

The key test is the time. If you stress a state that lasts and may stop, use -는 한. If you simply say "if", use -(으)면. If the first clause is a settled fact that creates a duty, use -(으)ㄴ/는 이상. Compare these two.

• 비가 오면 소풍을 안 가요. ("If it rains, we don't go on the picnic.") A plain condition.
• 비가 오지 않는 한 소풍은 갈 거예요. ("Unless it rains, we will go.") A boundary: only rain stops the plan.

The pattern -는 한 is also close to -다가는, but they differ: -다가는 warns about a bad result of a continuing action, while -는 한 states a limit that can lead to any result.

The next section covers set phrases and edge cases.

Variations and Edge Cases of -는 한

Set Phrases

Some forms of -는 한 appear again and again. They are worth learning as chunks.

The phrase 가능한 한 is often followed by an adverb: 가능한 한 빨리 오세요 means "Please come as soon as possible." The phrase 할 수 있는 한 도와 드릴게요 means "I'll help as much as I can." The second 한 in 가능한 한 is the bound noun, and the first 가능한 is the modifier.

The Phrase 한이 있어도

A strong set phrase is -는 한이 있어도, which means "even if it comes to ...". 밤을 새우는 한이 있어도 끝내겠어요 means "Even if I have to stay up all night, I'll finish it." Here 한 takes the subject particle 이, and 있어도 means "even if there is". The phrase says: "Even if there is a limit like that to reach."

The Homograph 한

Do not mix up this pattern with the number 한 ("one"), which comes before a counter. 한 사람이 왔어요 means "One person came." The number 한 is spelled the same, but it stands before a counter such as 사람, 개 or 명, never after a modifier. In -는 한, 한 follows a modifier and ends the clause.

A Weaker Partner

For a looser "as long as", spoken Korean often uses the plain -(으)면 instead. It carries less of the "limit" feeling, so use -는 한 when you want a firm boundary.

The next section lists the mistakes that appear most often.

What Mistakes Do Learners Make with -는 한?

Learners make six predictable mistakes. Each has a reason and a fix.

Learners often use it for a single, finished event. 한 needs a state that lasts. Wrong: 어제 비가 온 한 소풍을 못 갔어요. Right: 어제 비가 와서 소풍을 못 갔어요. Fix: use -아/어서 or -기 때문에 for a past reason.

Learners often attach 한 to a bare stem. A modifier must come first. Wrong: 노력하 한 and 노력해요 한. Right: 노력하는 한. Fix: add 는, (으)ㄴ or 인 before 한 and never put the polite ending 요 inside.

Learners often write the modifier and 한 together. 한 is a separate word. Wrong: 노력하는한. Right: 노력하는 한. Fix: leave a space.

Learners often use the wrong negative modifier. A verb takes 않는 and an adjective takes 않은. Wrong: 노력하지 않은 한 성공할 수 없어요. Right: 노력하지 않는 한 성공할 수 없어요. Fix: ask whether the word is a verb or an adjective.

Learners often reverse the meaning of "unless". 노력하지 않는 한 성공할 거예요 is grammatical, but it says "Unless you try, you will succeed", which makes no sense. Right: 노력하지 않는 한 성공할 수 없어요. Fix: read -지 않는 한 as "unless" and check the logic of the result.

Learners often use it for a duty. The pattern sets a limit, not a duty. Wrong: 약속한 한 지켜야 해요. Right: 약속한 이상 지켜야 해요. Fix: use -(으)ㄴ/는 이상 for a settled fact that creates a duty.

The next section gives you practice.

Practice and Answers

Do the four tasks, then compare with the key.

Task 1: join the sentences with -는 한. Write one sentence for each pair.

1. 네가 노력해요. / 나는 도울 거예요.
2. 제가 여기 있어요. / 걱정하지 마세요.
3. 비가 오지 않아요. / 소풍은 갈 거예요.
4. 규칙이 바뀌지 않아요. / 문제는 계속될 거예요.

Task 2: fix the error. Each sentence has one mistake. Rewrite it correctly.

1. 노력하는한 성공할 수 있어요.
2. 노력하지 않은 한 성공할 수 없어요.
3. 어제 비가 온 한 소풍을 못 갔어요.

Task 3: translate. Write in Korean: "As far as I know, there is no problem." and "Please come as soon as possible."

Task 4: write your own. Write one sentence with 아는 한, and one with 않는 한.

Answer key

1. (1) 네가 노력하는 한 나는 도울 거예요. (2) 제가 여기 있는 한 걱정하지 마세요. (3) 비가 오지 않는 한 소풍은 갈 거예요. (4) 규칙이 바뀌지 않는 한 문제는 계속될 거예요.
2. (1) 노력하는 한 성공할 수 있어요. (2) 노력하지 않는 한 성공할 수 없어요. (3) 어제 비가 와서 소풍을 못 갔어요.
3. 내가 아는 한 문제가 없어요. 가능한 한 빨리 오세요. Other correct versions exist, for example 제가 아는 한 문제는 없어요 in polite speech.
4. Sample answers: 제가 아는 한 그 식당이 제일 맛있어요. 규칙을 지키지 않는 한 참가할 수 없어요. Any pair is correct if the modifier comes first, 한 is spaced, and the result fits the limit.

If task 1 was correct, you have the formation rule. If task 2 was hard, check whether you skipped the space, used the wrong negative modifier, or described a single event. The next section points you to what comes after this lesson.

What Should You Learn after -는 한 Grammar?

After -는 한, learn -(으)ㄹ수록 for "the more ..., the more ...", and -다가는 for warnings about a continuing action. If you have not yet studied the plain condition, go back to -(으)면. For a settled fact that creates a duty, see -(으)ㄴ/는 이상.

For a wider view, the parent page Conditions (If) lists every connector in this group. To plan by level, use Advanced Grammar.

This lesson covers -는 한 in the polite, casual and formal styles. It does not cover every written variation. About this page. Last updated 2026-10-09. Revised Romanization follows the national rules and is shown only as a learning aid.

Frequently Asked Questions

What Does -는 한 Mean?

-는 한 means "as long as" or "to the extent that". It names a state that continues and says the result holds only while that state lasts. 네가 노력하는 한 나는 도울 거야 means "As long as you keep trying, I will help." The negative form -지 않는 한 means "unless".

How Do I Attach -는 한 to a Verb or Adjective?

Make a modifier and add the separate word 한. A verb takes 는 (노력하는 한), an adjective takes (으)ㄴ (가능한 한), and a noun takes 인 (학생인 한). For "unless", use -지 않는 한 with a verb and -지 않은 한 with an adjective. Always leave a space before 한.

Can -는 한 Be Used in the past Tense?

Not in the usual way. The pattern sets a limit on a state that is true now or continues. It does not describe a finished event. 어제 비가 온 한 sounds wrong. The result clause can be present or future, such as -(으)ㄹ 거예요 or -겠어요. For past events, use -아/어서 or -기 때문에.

Is -는 한 Used in Speech or Only in Writing?

Both. In speech you hear it in promises and warnings, such as 제가 여기 있는 한 걱정하지 마세요. Set phrases like 가능한 한 and 내가 아는 한 are very common. In essays and news, -는 한 sets conditions and limits. It sounds firm, a little formal and clearly stronger than -(으)면.

What Is the Most Common Mistake with -는 한?

Using it for a single event instead of a continuing state. 어제 비가 온 한 소풍을 못 갔어요 is wrong, because 한 needs a state that lasts. Say 어제 비가 와서 소풍을 못 갔어요. Other frequent mistakes are writing 한 without a space and reversing the logic of -지 않는 한 ("unless").

What Is the Difference between -는 한 and -(으)면?

-(으)면 is a plain "if" or "when", and the result can be anything. -는 한 sets a limit: the result holds only while the state lasts, often with 계속 or 변함없이. 노력하면 도울 거야 means "If you try, I'll help." 노력하는 한 도울 거야 means "For as long as you keep trying, I'll help."

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