In English, you will put "I think", "I guess", or "I noticed" in the beginning of a sentecce. However, in Korean, we put it at the end of a sentence. 

1. -것 같아요 I think 

1) I think Korea is a beautiful country. 
한국은 아름다운 국가인 것 같아요. 

2) I think he went to the library after school.
그가 학교 끝나고 도서관에 간 것 같아요. 

3) I think they are sleeping right now. 
걔네 지금 자고 있는 것 같아요.

2. -가 봐요, -나 봐요 I guess 
 
1) I guess the food wasn't that good. 
음식이 별로 맛이 없었나 봐요. 

2) I guess the medicine is not available in Korea. 
한국에는 그 약이 없나 봐요. 

3) I guess she's busy working. 
그녀는 일하느라 바쁜가 봐요. (for adjective, present tense) 

3. 더라고요 I noticed, I found that 

1) When I went to Seoul again in 10 years, I noticed it had changed a lot.
제가 10년 후에 서울에 다시 가 보니까 많이 변했더라고요. 

2) I noticed a lot of stores are closed down in Myungdong. 
제가 명동에 가보니까 가게들이 많이 문을 닫았더라고요. 

3) I found that Chicago is very cold. 
시카고에 가보니까 엄청 춥더라고요. 

Learn Korean and other languages online with our audio flashcard system and various exercises, such as multiple choice tests, writing exercises, games and listening exercises. Click here to Sign Up Free! Or sign up via Facebook/Google with one click:     Watch a short Intro by a real user!