~아/어서 그런지, ~아/어서 그랬는지 = Maybe because… It might be/have been because…

(

~아/어서 그랬는지 shortened to ~았/었는지 )

바빠서 그런지 죤은 무술에 관심 이 없다 = Maybe because he is busy, John is not interested in the martial arts.
잠을 못 자서 그런지 머리가 아프다 = Maybe because I didn’t sleep, I have a headache.
학생이 많이 늘었다. 그래서 그런지 갑자기 교실이 모자란다 = The number of students has increased. Maybe that’s why there aren’t enough classrooms.

감기약을 먹어서 그랬는지 수업 시간 때 졸려서 혼났어요 = Maybe because I took cold medicine, I fell asleep in class and got scolded.
친구가 양이 좀 적었는지 더 시키겠다고 했다 = Maybe because there wasn’t much food, my friend ordered more.
한국 사람이어서 그런지 매운 음식을 좋아해요 = (I like spicy food, maybe because I’m Korean.

글쎄(요) – well, hmm, let me see

글쎄, 없는데. 약속이 있거든 = Well, no. I’ve got an appointment.
글쎄, 지금 말하고 싶지 않아요 = Well, I’d rather not say right now.
글쎄, 내가 너라면 그렇게 하지 않을거야 = Well, I wouldn’t if I were you.
글쎄, 그에게 줄 아무 것도 사지 않았어 = Well , I didn’t buy anything for him.
글쎄 내주까지 기다릴까 = Well, shall we wait until next week?
글쎄 그럼 돈이 얼마 더 필요하니? = Well, then, how much more money will you need?
글쎄요, 그건 확실히 모르겠어요 = Well, I’m not sure about that.

maybe, possibly, hmm

(제 생각엔 그가 사직해야 할 거예요) 글쎄요 = (I think he should resign.) Maybe.
글쎄요. 시간이 많지 않아서요 = I’m not sure. I don’t have much time.

just, please

글쎄 내 말 들어 = Just listen to me.
글쎄 해만 보라구 = Just try it.
글쎄 조용히 하라구 = Please be quiet!

uncertainty, whether/if

~는지 (verb)
~(으)ㄴ지 (adjective)

whether, if

내일 우리 만날 수 있는지 알고 싶어요 – i want to know whether we can meet tomorrow
너무 맛있었어요! 어떻게 만들었는지 가르쳐 주세요 – It was delicious! Please tell me how you made it.
여자 친구가 있는지 없는지 궁금해요 – I wonder whether he has a girlfriend.|
문제가 있는지 물어보세요 – ask them whether there’s a problem
이거 괜찮은지 봐 주세요 – see if this is okay

whether… or.. (은/는지… 은/는지…)

사기꾼인지 강돈지 – whether he might be a swindler or a burglar

perhaps because

바람에 흔들리는지 -perhaps because they were being shaken by the wind
그래서 그런지 – maybe that’s why
그것도 자기 팔자소간인지 – it may be that this was his fate
만족하는 때문인지 – perhaps it was because of my satisfaction

uncertainty about what/why/when/where

뭐 사고 싶은지 말해 주세요 – tell me what you want to buy
어떻게나 쫓아다니는지 – and how she’s following me around