Korean Grammar Point
~지 않다/지 못하다 [ji anhda/ji mothada] (Not, don't, can't)

~지 않다/지 못하다 [ji anhda/ji mothada] (Not, don't, can't)

Short explanation:

Used to express negation or inability; 'not', 'don't', 'can't'.

Formation:

Verb Stem + 지 않다/지 못하다

Examples:

우리는 그 레스토랑에서 마음에 드는 음식을 찾지 못했어요, 그래서 다른 레스토랑을 찾아보기로 했어요.
Urineun geu reseutorangeseo maeume deuneun eumsigeul chatji mothaseoyo, geuraeseo dareun reseutorangeul chatabogiro haesseoyo.
We couldn't find food we liked in that restaurant, so we decided to look for another restaurant.
그 학생은 그 문제를 이해하지 않아서 선생님에게 또 질문했어요.
Geu haksaengeun geu munjeleul ihaehaji anhaseo seonsaengnimege tto jilmunhaesseoyo.
That student did not understand the problem, so they asked the teacher again.
오늘 밤에 늦게 집에 돌아오지 않을거에요, 왜냐하면 아직 해야 할 일이 있기 때문이에요.
Oneul bame neutge jibe doraoji anheulgeoeyo, waenamyon ajig haeya hal iri issgi ttaemunieyo.
I won't come home late tonight because I still have things to do.
영화도 보지 못하고, 책도 읽지 못했어요. 너무 바빴어요.
Yeonghwado boji mothago, chaekdo ilgji mothasseoyo. Neomu bappasseoyo.
I couldn't watch a movie or read a book. I was too busy.

Long explanation:

'~지 않다 [ji anhda]' and '~지 못하다 [ji mothada]' are verb endings in Korean used to express negation and inability respectively. The first one, '~지 않다', is equivalent to 'not' or 'don't' in English, while the second one, '~지 못하다', corresponds to 'can't' or 'unable to'. These forms are often used to express the speaker's inability to perform an action or refusal to do something.

Detailed Grammar notes:

Processing keyword: ~지 않다/지 못하다 [ji anhda/ji mothada] (Not, don't, can't)

Korean Grammar Point: ~지 않다/지 못하다 [ji anhda/ji mothada] (Not, don't, can't)

지 않다/지 못하다 [ji anhda/ji mothada] (Not, Don't, Can't)

1. Introduction

In Korean, negation is an essential part of everyday communication. Understanding how to express "not doing" something or "cannot do" something is crucial for building meaningful sentences. Two commonly used grammatical structures for negation are ~지 않다 and ~지 못하다. This lesson will delve into their meanings, usage, and how to form sentences using these structures.


2. Core Grammar Explanation

Meaning

  • ~지 않다
    • Used to express that someone does not do something or something is not a certain way.
    • Equivalent to "do not" or "does not" in English.
  • ~지 못하다
    • Used to express that someone cannot do something due to inability or certain circumstances.
    • Equivalent to "cannot" or "can't" in English.

Structure

Formation with Verbs and Adjectives

  1. Take the verb or adjective stem (remove 다 from the dictionary form).
  2. Add ~지 않다 or ~지 못하다 to the stem.

Formation Diagram

For verbs and adjectives:

[Verb/Adjective Stem] + 지 않다
[Verb/Adjective Stem] + 지 못하다

Conjugation

Both ~지 않다 and ~지 못하다 are treated as verbs and are conjugated accordingly. | Tense | ~지 않다 (Not) | ~지 못하다 (Cannot) | |--------------|----------------------------|--------------------------------| | Present | 지 않아 / 지 않아요 / 지 않습니다 | 지 못해 / 지 못해요 / 지 못합니다 | | Past | 지 않았어 / 지 않았어요 / 지 않았습니다 | 지 못했어 / 지 못했어요 / 지 못했습니다 | | Future | 지 않을 거야 / 지 않을 거예요 / 지 않을 것입니다 | 지 못할 거야 / 지 못할 거예요 / 지 못할 것입니다 |

3. Comparative Analysis

~지 않다 vs. 안

  • 안 + Verb/Adjective
    • The negative adverb is placed before the verb or adjective.
    • More colloquial and commonly used in spoken Korean.
  • ~지 않다
    • The negative ending ~지 않다 is attached after the verb or adjective stem.
    • Slightly more formal and often used in written Korean. Example:
  • I don't eat breakfast.
    • 안 먹어요. (More casual)
    • 먹지 않아요. (More formal)

~지 못하다 vs. 못

  • 못 + Verb
    • The negative adverb is placed before the verb.
    • Indicates inability due to external circumstances or lack of skill.
  • ~지 못하다
    • Attached after the verb stem.
    • Has the same meaning as 못 + Verb but slightly more formal. Example:
  • I can't swim.
    • 못 수영해요. (More casual)
    • 수영하지 못해요. (More formal)

4. Examples in Context

Formal Situations

  1. 미팅에 참석하지 않습니다.
    • I am not attending the meeting.
  2. 저는 술을 마시지 못합니다.
    • I cannot drink alcohol.

Informal Situations

  1. 나 오늘 영화 보지 않아.
    • I'm not watching a movie today.
  2. 그는 운전하지 못해요.
    • He can't drive.

Written Context

  1. 그 책은 재미있지 않았다.
    • The book was not interesting.
  2. 우리는 그 문제를 해결하지 못했다.
    • We couldn't solve that problem.

Spoken Context

  1. 왜 춤추지 않아요?
    • Why aren't you dancing?
  2. 시간이 없어서 공부하지 못했어요.
    • I couldn't study because I didn't have time.

5. Cultural Notes

Cultural Relevance

  • The choice between / and ~지 않다/~지 못하다 can reflect the level of formality and politeness in a conversation.
  • Using ~지 않다 and ~지 못하다 is considered more formal and respectful, appropriate for written communication or formal speech.

Idiomatic Expressions

  • 믿을 수 없다/믿기지 않다: To be unbelievable.
    • 그 소식은 정말 믿기지 않아요.
      • That news is truly unbelievable.
  • 눈치 채지 못하다: To not notice or be unaware.
    • 그는 그녀의 마음을 눈치 채지 못했어요.
      • He didn't notice her feelings.

6. Common Mistakes and Tips

Error Analysis

  1. Using 못 with Adjectives
    • Incorrect: 못 예쁘다 (Cannot be pretty)
    • Correct: 예쁘지 못하다 (Not commonly used)
      • It's uncommon to use ~지 못하다 with adjectives. Instead, use 안 예쁘다 or 예쁘지 않다.
  2. Confusing 안 and 못
    • means "do not," indicating a choice.
    • means "cannot," indicating inability.

Learning Strategies

  • Mnemonic for Positioning:
    • and come before the verb (think of them as prefixes).
    • ~지 않다 and ~지 못하다 come after the verb stem (think of them as suffixes).
  • Remember the Context:
    • Use ~지 못하다 when there's an inability due to circumstances.
    • Use ~지 않다 when the subject chooses not to do something.

7. Summary and Review

Key Takeaways

  • ~지 않다 is used to express that someone does not do something.
  • ~지 못하다 is used to express that someone cannot do something.
  • and are more casual and placed before verbs.
  • ~지 않다 and ~지 못하다 are more formal and attached after verb stems.
  • Be mindful of the formality level in different contexts.

Quick Recap Quiz

  1. Fill in the blank with ~지 않다:
    • 저는 매운 음식을 먹___ __아요.
  2. Convert to a negative sentence using 못:
    • 그는 자전거를 탑니다.
  3. Which form is more formal?
    • 안 합니다 vs. 하지 않습니다 Answers:
  4. 먹지 않아요.
    • I do not eat spicy food.
  5. 그는 자전거를 못 탑니다.
    • He cannot ride a bicycle.
  6. 하지 않습니다 is more formal than 안 합니다.

By understanding and practicing these grammar points, you'll be able to express negation accurately and appropriately in various situations in Korean. Remember to pay attention to the formality level and choose the correct structure based on the context.

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