복습하다([bok-seup-ha-da/review]) means to go over again. In polite speech, say 복습해요([bok-seu-pae-yo]).
복습했어요([bok-seu-pae-sseo-yo/reviewed]) is the polite past form. Example: 복습했어요 (I reviewed).
복습해야 해요([bok-seu-pae-ya hae-yo/have to review]) means you must go over again. Example: 복습해야 해요 (I have to review).
복습하다([bok-seup-ha-da/review]) means "to review". To go over again, look over again, check again, study again.
1. Daily: “복습해요? (bok-seu-pae-yo)” Do you review?
2. Past: 복습했어요([bok-seu-pae-sseo-yo/reviewed]) reviewed.
3. Duty: 복습해야 해요([bok-seu-pae-ya hae-yo/have to review]) have to review.
4. Warning: 복습하지 마세요([bok-seu-pa-ji ma-se-yo/don't review]) don't review.
A: How do you review Korean?
B: 매일 저녁에 노트 보면서 복습해요. B: mae-il jeo-nyeo-ge no-teu bo-myeon-seo bok-seu-pae-yo.B: I review by looking at my notes every evening.
A: 어디서 복습해요? A: eo-di-seo bok-seu-pae-yo?A: Where do you review?
B: 기숙사에서 조용히 복습해요. B: gi-suk-sa-e-seo jo-yong-hi bok-seu-pae-yo.B: I review quietly in the dorm. - 복습하다([bok-seup-ha-da/review])
A: Did you review what you learned yesterday?
B: 네, 자기 전에 복습했어요. B: ne, ja-gi jeon-e bok-seu-pae-sseo-yo.B: Yes, I reviewed before sleeping.
A: 얼마나 복습했어요? A: eol-ma-na bok-seu-pae-sseo-yo?A: How long did you review?
B: 한 시간 동안 복습했어요. B: han si-gan dong-an bok-seu-pae-sseo-yo.B: I reviewed for an hour. - 복습했어요([bok-seu-pae-sseo-yo/reviewed])
A: By when do you have to review?
B: 내일까지 복습해야 해요. 쪽지시험 있어요. B: nae-il-kka-ji bok-seu-pae-ya hae-yo. jjok-ji-si-heom i-sseo-yo.B: I have to review by tomorrow. There's a quiz.
A: 다 복습해야 해요? A: da bok-seu-pae-ya hae-yo?A: Do you have to review all?
B: 네, 1과부터 3과까지 복습해야 해요. B: ne, il-gwa-bu-teo sam-gwa-kka-ji bok-seu-pae-ya hae-yo.B: Yes, I have to review from lesson 1 to 3. - 복습해야 해요([bok-seu-pae-ya hae-yo/have to review])
• 복습하다([bok-seup-ha-da/review]) review
- 복습했어요([bok-seu-pae-sseo-yo/reviewed]) reviewed
- 복습하고 싶어요([bok-seu-pa-go si-peo-yo/want to review]) want to review
- 복습해야 해요([bok-seu-pae-ya hae-yo/have to review]) have to review
- 복습하지 마세요([bok-seu-pa-ji ma-se-yo/don't review]) don't review