Level 6 Lesson 27 / can, to be able to, to know how to / -(으)ㄹ 수 있다, -(으)ㄹ 줄 알다


In our previous lesson, we learned how to use -(으)ㄹ 줄 알다 to say “to think/know that something will happen”. This sentence ending, however, can be also used to express “can”, “to be able to”, or “to know how to”. The same meanings can also be expressed through -(으)ㄹ 수 있다, so through this lesson, let’s find out how these two verb endings are used similarly or differently to express “can” or “to be able to”.

You can download both the PDF lesson notes and the MP3 audio track for this lesson below, and if you want to learn with our various textbooks and workbooks, you can get them on our online bookstore at MyKoreanStore.com. If you have any questions about this lesson, please leave us comments below!

Download PDF
Download MP3

Go to the Grammar Curriculum page to see all of our grammar lessons.

Level 6 Lesson 27 / can, to be able to, to know how to / -(으)ㄹ 수 있다, -(으)ㄹ 줄 알다
Tagged on:                     
  • (으)ㄹ 줄 알다

    finally i know what it is…i heard that form ….(으)ㄹ 줄 알아요 in Khuntoria We got married and i wondered what it means…thanks for this lesson , 선생님 ^^

  • thank you teachers! i confused before how to distinguish between this “able to/not able to” and “i thought”. so we only need to see the context!

  • Samier

    안녕하세요 TTMIK!!

    Great lesson! I’ll be sure to use -(으)ㄹ 줄 알다 ^^



    nure hal jul arrayo?can you sing?2.suyong hal jul arrayo?can you swim?im right?tnx for this wonderful lesson,ilove korean saranghe nomu kamsahamnida

  • nicky

    (으)ㄹ 줄 알다/모르다 = know/not know how to
    (으)ㄹ 수 있다=can or possibility, ability

    내일 생일 파티에 갈 수 있어요.
    테니스는 칠 줄 알지만 시간이 없어서 오늘은 칠 수 없어요.

    나는 2년 동안 한국어를 공부하고 있는데 아무리 연습해도 발음이 좋아지지 않아요.
    지난 달에 한국어 중급2 수업이 드디어 끝냈어요.

  • 영완

    지금 이 레슨은 이해할 줄 알았어요. 많이 즐겼어요. ^_^

  • I know how to make kimbap and I can make kimbap very well

    김밥은 만들 줄 알아서 잘 만들어요

    I don’t know how to swim yet but I can swim

    수영 아직 할 줄 모르는데 홀 수 있엉요

  • What’s the difference between these two forms

    너는 한국어로 말 되?


    너는 한국어로 말할 줄 알아?

    그걸 반말인데요 선생님들 감사합니다

  • 비빔밥을 요리할 줄 알아요? 아니면 식당에 가자.
    영어를 할 줄 몰라서 영국에서 살기 어려웠어.

  • janina

    Your lessons are so helpful! Thanks so much for this website ^^

  • Megha

    I’m a little confused about this sentence. If someone says:

    영어 할 줄 알아요?

    How do I know if they are asking if I know how to speak English OR if I think they know how to speak English?

    Even if the difference lies in context, sometimes there are situations where both of these meanings could be possible…

    Thank you~

    • 학생

      I know – emphasis on 알아요 with tone from high to low – ARayo~
      I thought – emhphasis is also on 할 – HAl jul arayo~
      Can you? – emphasis on 알아요 with tone from low to high – araYO?

      Damn thanks god it’s not like Chinese… it’s probably a nightmare learning it T_T
      There the meaing of every word competely changes like that I heard…

  • HExCIA

    “한국말 가르쳐 줄 수 있어요? ” ” can you teach me korean?”
    am i right? please correct me..

    • If you use the -ㄹ 수 있다 form, then it would be 한국말 가르칠 수 있어요? The 줄 part is only for -ㄹ 줄 알다. Also, since -ㄹ 수 있다 means “to have the ability to do something,” I think the true sentence for asking someone to teach you Korean would be 한국말 가르쳐 도 돼요? Or also, 한국말 가르치면 안돼요? I’m also learning Korean, so you may want to double check the last two sentences.

  • Jo

    How would you use -을 수 있다 with past tense? Like… “I was able to”?

    • KyungHwa Sun

      You can conjugate it to -(으)ㄹ 수 있었어요. 🙂

  • Jo A

    언어질문에 관해있으면, 물어볼 수 있는 사람 있어요?
    Do you have someone whom you can ask about language-related questions?

    • KyungHwa Sun

      You can say “물어볼 사람” or “물어볼 만한 사람” to mean “a person whom you can ask questions to” in Korean. So, you can say 언어에 관련해서 질문이 있을 때 물어볼 (만한) 사람 있어요?

    • Jo A

      Yay~~~ 감사합니다!!^^

  • Eman

    제 생일 파티는 6시 반에 시작할 게예요. 여기서 도착할 수 있어요?

    이 문제 해결 줄 알아요?

  • 하오라

    한국어를 할 줄 알아요 ..?

  • Shy Unicorn ♡

    이 문장이 빠르게 말할 수 있어요?

  • Sanjeeda Masroor

    1) Do you know how to download movies?
    – 영화 다운로드할 줄 알아요?

    2) Do you know how to make this?
    – 이건 만들 줄 알아요?

    3) I think she knows how to do this.
    – 그녀는 이거 할 줄 알는 것 같아요

    4) Can you do this?
    – 이거 하줄 수 있어요?

    5) Can you go to seoul alone?
    – 서울에 혼자 갈 수 있어요?

    If there are any mistakes in the above sentence, Please correct me. 감사합니다!! 🙂

  • Dania Freih

    1. 저는 자전거 탈 줄 알고 싶어요.
    2. 저도 운전 할 줄 몰라요.
    3. 영어 할 줄 알아요.

  • 이상민

    아직 한국말을 완벽하게 못 하는데, 어느 정도 할 줄 알아요. i cant speak Korean perfectly yet, but I know how to speak it to a certain extent.

  • Imogen Eve Blair

    제가 안 할 줄 알았어요? = Did you think I wouldn’t. Did you know I wouldn’t
    그녀가 너를 좋아한 줄 몰랐어요? didn’t you know she liked you?/ You didn’t know she liked you.
    제 엄마가 그녀의 핸드폰을 사용할 줄 몰랐으니까 제가 도와 줬어요 = My mum/mom didn’t know how to use her phone so I helped her.
    제가 이 단어의 뜻을 몰랐어요.= I didn’t know what this word meant.

  • Yuki

    나: 언어를 말할 줄 알아요?
    가: 네 스페인어하고 영어를 할 줄 알아요 그리고 좀 한국어를 그런데 아직 잘 못 수 없어요

    수학을 할 줄 몰라요 제가 잘 못해요