Level 5 Lesson 18 / Whether or not / -(으)ㄴ/는지

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안녕하세요. ^^ In this lesson, we take a look at the verb ending -(으)ㄴ/는지. It is basically used with verbs related to knowing, guessing, informing, thinking, etc, for expressing the meaning “whether or not”.

Thank you so much for studying with us and as usual, be sure to leave us comments and practice making your own sample sentences!

You can view a free PDF for this lesson here, or if you want to study with our TalkToMeInKorean textbooks, you can get them here. And after you learn the basics, try writing your own Korean sentences and get corrections from native speakers through HaruKorean, our 1:1 correction service.

  • sae

    I am 1st uhu :D wow!!!
    good job guys! ;) !!!!!!

  • sae

    I am the 1st uhu :D!!!
    good job guys ;)!!!!!!!

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  • christian cortes

    예전에 만난 친구는 태국에 갔는 지 몰라요. 필리핀에서 다시 돌아오기 바래요.

  • 니 키

    안녕하세요! 여러분

    내 문장 입니다.

    1.Tell me what is the secret.
    – 비밀 인지 말해주세요.

    2.Whether you like or not, please tell.
    – 좋아하는지 좋아안하는지 말하세요!

    3. I don’t know what is the secret, so i want to know.
    – 뭐가 비밀인지 몰라서 알고싶어요.

    • 1. 비밀이 뭔지 말해주세요.

      이 거는 나아진 거 같은지 확실하지 않다고 생각해요.
      i think i’m not sure whether what i think this is better.

  • 나디아

    안녕~ 한국어를 공부하기 시작했을 때부터 어떻게 “-는지”를 사용하는지 궁금했어서TTMIK의 제일 새로운 레슨 때문에 정말 행복해요~ 수고했어요 :) 제가 매일 한국어를 공부하는 이유는 TTMIK예요!

    • 저도 이 새로운 레슨은 제일 좋은 레슨인 거 같애. 그리고 이 레슨이 중요하잖아요.

    • 카에르

      안녕하세요 나디아 씨, 만나서 반가워요. 한국어 열심히 배우하세요 !!
      안녕 완.. 잘 생각한다… 나한테 가르쳐 줄래 ㅎㅎ

    • 아니라… 우리는 함께 해라.. ㅎㅎㅎ ^_^

    • justcurious

      저도..완씨..한국어로 너무 잘 해..부럽다..

  • http://www.timeforstudy.wordpress.com Ira

    이라: 내 마음 속이 뭐가 있는지 알아요?
    혜성: 돈!
    이라: 어? 오빠 어떻게 알아요?
    혜성: 넌 어떤 사람인지 난 알아…
    이라: 오! 큰 일이다!

    저는 질문이 있어요…미래형이나 과거형은 어떻게 되나요?
    저는 그 사람은 무슨 영화를 볼지 / 볼은지 /볼는지 몰라요. ????? (미래)
    저는 그 사람은 무슨 영화를 봤는지 몰라요. ???? (과거)

    • http://www.timeforstudy.wordpress.com Ira

      미안해요 잘못 썼어요
      이라: 내 마음 속에 뭐가 있는지 알아요?

  • Jem

    It’s been a long time since I’ve tried making a sentence ^^ hmm..
    지난 달에 저는 너무 너무 걱정했어요..
    제가 대학교를 졸업 할 수 있는지 몰랐어요..ㅠㅠ
    Now, I can say, after 5 loooong years…
    성공!! 졸업했어! :D 박수! ㅋㅋㅋ

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  • Samier


    I’ve heard -는지 on song lyrics before :D

    1. 음식 좋은지 몰라요… ㅎㅎㅎ


  • Josh


    Just wanted to say first that this site is really great. There are a lot of grammar aids on the internet but most lack in comparison to this….a very complete and yet still-growing resource made by people who really care about others learning the language. Thank you for providing all of this!

    But as for my question…I’ve actually been wondering about this for a while now. I’ve heard this construction before and pretty much understand it. But something that confuses me is that, in order to express a (seemingly?) similar question, a different construction was used. Something like:

    내가 누구를 사랑하는것을 알아요?

    Or at least it was something along those lines. Could it be something like, if you use the 는지 construction, you are portraying a more “whether or not/if” kind of expression (Do you know whether or not…), vs. if you use 는것을 it’s just “do you know THAT blahblah)?? Maybe I’m just remembering totally wrong, but I’m pretty sure I was told there is another way to say this type of thing using a construction other than -는/ㄴ 지.


    • 스티븐

      똑앝은 준제가 있었어요!

      From my understanding when you add 는것은/는것이 after a verb, its more like saying “the act of”.

      ie, 먹는것을 좋아해요. i like the act of eating
      or 한국 공부하는것이 힘들어요. the act of studying korean is hard

      It would be great if a pro could provide some more tips on what the difference here is!


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  • Brian

    무슨 책 읽는지 중요하지 않아요. It doesn’t matter what book you read.
    얼마 동안 일하는지 중요하지 않아요. It doesn’t matter how long you work.
    어떻게 해야 하는지는 뻔하죠. It’s obvious what you should do.
    그 모자가 얼마나 하는지 그에게 물어보아라. Ask him how much the hat is.
    어떻게 하는지 보여드릴게요. I’ll show you how to do it.

  • Chris

    Can someone please tell me how to say “if” in this pattern? Like “Could you tell me if this book is interesting?” I’m wondering how to say this because saying “이 책이 재미있는지 말해주세요” means “Please tell me this book is interesting” and that’s not what i mean. Thank you :D

    • 스티븐

      이 책이 재미있으면 말해주세요.

      IF this book is interesting, please tell me

  • http://www.facebook.com/people/Jolly-Good/100002653168045 Jolly Good

    학교에 가는지 알아요? (Do you know if they went to school?)

  • http://www.facebook.com/people/Kris-Jaejoong-Cassiopeia/100000050714974 Kris Jaejoong Cassiopeia


    pls.correct me.

    그 삼각김밥이 얼마나 맛 있는 지 몰라요
    i dont know how tasty that 삼각김밥.

  • http://www.facebook.com/people/Hee-Lee/100002453367433 Hee Lee

    제문 봐주세요

    제문 봐주세요

    you dont know what you’ve done to me ?
    나한테 뭐 했는지 모라?

    please ask if he has a girl friend or not
    여자친구 있는지없는지 물어보세요

    you dont know whether she’s beautiful or not ?

    그녀 예쁜지 모라요 ?

  • http://www.facebook.com/people/Hee-Lee/100002453367433 Hee Lee

    oh how could i even forget this

    it’s Sorry sorry lyric , a Famous Super Junior song

    말해봐 맘에 내가
    말해봐 자리 잡았는지
    말해줘 내게 말해줘
    나는 바보 바보 바보

    [Kangin] Tell me in your heart I
    Tell me did I get a spot
    Tell me tell me please
    Im stupid stupid stupid

    (failure again , it’s supposed to be : tell me whether I get a spot ,right ?)

  • fb

    I have a question…
    What is the difference between 몰라요 and 모르겠어요 to mean ‘I don’t know’?

    • http://twitter.com/ever4one Hyunwoo Sun (선현우)

      몰라요 is a little more direct. 모르겠어요 implies that you would like to try to know but you can’t seem to know, so it’s more polite. Please check this lesson –> http://www.talktomeinkorean.com/lessons/l6l16/ for more information about -겠- :)

    • fb

      I was unsure because it said that [the second form] in my dictionary, and I also had heard it in a song. However, I understand now!
      Thank-you! 현우 씨.

  • Peter Pockets

    I think in most of the example sentences of the lesson “neun-ji” = a comma separating two clauses in a compound-sentence; rather than “if”.

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  • Michael M

    오늘 비가 오는지 알고 싶어요.

    I want to know if it will rain or not today.

  • 아유리

    장구를 치다.

    Do you know how to play Jangu? (Korean Traditional Drum)
    = 장구를치는지 알아요?

    Is this correct?
    or I should add 어떻게 in this sentence?

    Thanks for your help!

  • http://www.facebook.com/people/Misa-Hughes/542989054 Misa Hughes

    오늘은 무슨 날인지 알아요? 제 생일이에요! (이거 거짓말인데, 좋은 예문 잖아요? ㅋㅋㅋ…)

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  • http://www.facebook.com/people/Rafael-Rodrigues/717896947 Rafael Rodrigues

    Sample Sentences:
    1. 네 친구는 예쁜지 알고 싶어.
    2. 내일 우리 같이 먹는지 말해 주세요.
    3. 네가 이 책을 사고 싶은지 알아?

  • 돈이 없는지 알고싶어요.
    (I want to know if you don’t have money)

    돈이 있어 없는지 알고싶어요.]
    (I want to know if you have or have no money)

  • Terence Poon
  • Creamie

    교실에 있는 사람들이 현우 씨 누군지 잘 몰라요!
    I don’t know who is Hyunwoo in this room.

    꽃 파는 곳이 어딘지 알려주세요.
    Could you tell me where flowers are sold?

  • Phil

    There is a little mistake in the subheading (I discovered it in the paid booklet, page 50) “언제 (where)”, obviously the bracket text is wrong. ;)

  • 장승은

    can you say
    “우리 모레 만날 수 있는지 없는지 알려주세요” 라고 말할 수 있어요?

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  • Claira


    이거 오늘 끝낼 수 있는지 말해 주세요. (Please tell me whether you can finish this today.)

    오늘은 비가 오는지 알것 같아요? (Do you think whether it will rain today?)

    이거 할 수있는지 몰라요. (I don’t know whether I can do this.)

    이거 해야 되는지 몰라요. (I don’t know whether I should do this.)

    지금 나 웃는지 울는지 몰라요. (I don’t know whether I should laugh or cry now.)

    그 남지가 안 온다는 이야기를 들었어. 너 오는지 다시 물어 볼 수 있어? (I heard someone saying that he won’t come. Can you try asking again whether he will come?)

    지금 뭐 하는지 알아요? (Do you know what you are doing now?)

    그 선물을 좋아하는지 몰라요. (I don’t know whether he will like the present.)

    그 컴퓨터가 되는지 알고 싶어요. (I want to know whether the computer is working.)

    그 서점에 찾는 책이 있는지 알고 싶어요. (I want to know whether the bookstore has the book I’m looking for.)

    뭐 하는 것이 옳은지 정말 알고 싶어요. (I really want to know whether what I am doing is correct.)

    감사합니다! :)

  • Dolsanria

    너를 좋아하는지 아라요?
    Do you know who likes you?

    벌써 갈 수 있는지 물어보세요.
    Ask if we are already going.

  • Gui Li

    Hello TTMIK! Is this correct? Thank you! :)

    이 책이 어디에서 살 수 있는지 아세요?

    (Do you know where can I buy this book?)

  • 엘리사 파올라

    하고 싶은 말이 많이 있는데 아직도 한국어로 어떻게 쓰는지 몰라요 ㅠ_ㅠ

  • Winnie Zambo

    1.우리 동생 어딘지 알아요?

    2.저는 이 사람이 김밥을 만들 수 있는지 알고 싶어.

    3.언제 집에서 돌아오는지 말해 주세요

  • Odette C.

    “는지”가 이미 “whether or not”를 뚯이어서 그 표현 “있는지 없는지”가 장황하죠?

  • Francesco Colléter

    저는 샤워를 시간 있는지 아라요?

    Do you know whether I have time to take a shower?