How to use 을/ㄹ 때까지 in Korean

Pattern: -(으)ㄹ 때까지

-(으)ㄹ 때까지 (-(eu)ㄹttae-kka-ji, (eu)ㄹttaekkaji)

-(으)ㄹ 때까지 expresses the duration until an action or state continues.

Korean grammar -(으)ㄹ 때까지 usage illustration

Usage guide

When and how native speakers actually use it.

-(으)ㄹ 때까지(-(eu)ㄹttae-kka-ji, (eu)ㄹttaekkaji)

A connective ending indicating the point in time until an action or state occurs or continues

When to use

waiting, achieving goals, passage of time

The nuance

Attach -(으)ㄹ 때까지 to the future tense of verbs or adjectives to mean 'until (something happens).' Use '-을 때까지' if the verb stem ends with a consonant, and '-ㄹ 때까지' if it ends with a vowel. It expresses the duration until an action or state continues.

Real-world examples

  • 시험이 끝날 때까지 공부할 거예요.

    si-heom-i kkeut-nal ttae-kka-ji gong-bu-hal geo-ye-yo., si heom i kkeut nal ttae kka ji gong bu hal geo ye yo.

    ‘끝날’ is the future form of ‘끝나다’ without a final consonant, so ‘-ㄹ 때까지’ is correctly used.

  • 비가 그칠 때까지 기다립시다.

    bi-ga geu-chil ttae-kka-ji gi-da-rip-si-da., bi ga geu chil ttae kka ji gi da rip si da.

    ‘그칠’ is the future form of ‘그치다’ without a final consonant, so ‘-ㄹ 때까지’ is appropriate.

  • 문이 열릴 때까지 밖에서 기다려 주세요.

    mun-i yeol-ril ttae-kka-ji bakk-e-seo gi-da-ryeo ju-se-yo., mun i yeol ril ttae kka ji bakk e seo gi da ryeo ju se yo.

    ‘열릴’ is future form of ‘열리다’ without a final consonant, so ‘-ㄹ 때까지’ is correct.

  • 밥을 먹을 때까지 TV를 보지 마세요.

    bap-eul meok-eul ttae-kka-ji tvreul bo-ji ma-se-yo., bap eul meok eul ttae kka ji tvreul bo ji ma se yo.

    ‘먹다’ stem ends with a consonant, so ‘-을 때까지’ is correctly used.

  • 영화가 시작할 때까지 자지 마세요.

    yeong-hwa-ga si-jak-hal ttae-kka-ji ja-ji ma-se-yo., yeong hwa ga si jak hal ttae kka ji ja ji ma se yo.

    ‘시작하다’ stem ends with a vowel, so ‘-ㄹ 때까지’ is correct.

  • 친구가 올 때까지 기다렸어요.

    chin-gu-ga ol ttae-kka-ji gi-da-ryeoss-eo-yo., chin gu ga ol ttae kka ji gi da ryeoss eo yo.

    ‘오다’ stem ends with a vowel, so ‘-ㄹ 때까지’ is correctly used.

  • 문을 닫을 때까지 회의가 계속됩니다.

    mun-eul dat-eul ttae-kka-ji hoe-ui-ga gye-sok-doep-ni-da., mun eul dat eul ttae kka ji hoe ui ga gye sok doep ni da.

    ‘닫다’ stem ends with a consonant, so ‘-을 때까지’ is correct.

  • 학교에 도착할 때까지 전화하지 마세요.

    hak-gyo-e do-chak-hal ttae-kka-ji jeon-hwa-ha-ji ma-se-yo., hak gyo e do chak hal ttae kka ji jeon hwa ha ji ma se yo.

    ‘도착하다’ stem ends with a vowel, so ‘-ㄹ 때까지’ is correct.

Quick quiz

  1. Which sentence correctly uses -(으)ㄹ 때까지?

    다음 중 -(으)ㄹ 때까지가 올바르게 사용된 문장은?(da-eumjung-(eu)ㄹttae-kka-ji-gaol-ba-reu-gesa-yong-doenmun-jang-eun?, daeumjung(eu)ㄹttaekkajigaolbareugesayongdoenmunjangeun?)
  2. Which -(으)ㄹ 때까지 form fits the verb ‘먹다’?

    ‘먹다’ 동사에 맞는 -(으)ㄹ 때까지 형태는?(‘meok-da’dong-sa-emaj-neun-(eu)ㄹttae-kka-jihyeong-tae-neun?, ‘meokda’dongsaemajneun(eu)ㄹttaekkajihyeongtaeneun?)
  3. Which -(으)ㄹ 때까지 form fits the verb ‘시작하다’?

    ‘시작하다’ 동사에 맞는 -(으)ㄹ 때까지 형태는?(‘si-jak-ha-da’dong-sa-emaj-neun-(eu)ㄹttae-kka-jihyeong-tae-neun?, ‘sijakhada’dongsaemajneun(eu)ㄹttaekkajihyeongtaeneun?)

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