I can tell / I could tell

어쩐지...그래보여

지나가는 나그네: Oh you speak English. Did you live in an 

English speaking country before?

오 너 영어하는구나. 전에 영어권 국가에서 살았었어?

나: I used to live in the states

미국에 살았었어

지나가는 나그네: I can tell

어쩐지 (그래보여 - 확신)

차장님: Is it all he has done so far?

얘가 지금까지 한게 이게 다야?

나: I mean... yes

네 저 그게 음... 네

차장님: I can tell he didn't put a lot of efforts into it

이자식 이거 많이 노력하지 않았구만? (그래보여 - 확신)

I could tell something was bothering you

뭔가 널 방해하는거 같아 보이더라

I could tell they would be getting married real soon

걔네 곧 결혼할거 같더라니까

I saw Eric with a new girlfriend and I could tell 

they were going to break up soon

에릭 새로운 여자친구랑 있는거 봤는데 곧 헤어질거 같았어