기억하다([gi-eok-ha-da/remember]) means to keep something in your mind and not forget it. In polite speech, say 기억해요([gi-eo-kae-yo]).
기억했어요([gi-eo-kae-sseo-yo/remembered]) is the polite past form. Example: 비밀번호를 기억했어요 (I remembered the password).
기억해야 해요([gi-eo-kae-ya hae-yo/have to remember]) means you must remember. Example: 내일까지 기억해야 해요 (I have to remember until tomorrow).
기억하다([gi-eok-ha-da/remember]) means "to remember". It is used when you keep information in your mind and don't forget it.
1. Daily: “비밀번호를 기억해요 (bi-mil-beon-ho-reul gi-eo-kae-yo)”
2. Past: 기억했어요([gi-eo-kae-sseo-yo/remembered]) remembered.
3. Duty: 기억해야 해요([gi-eo-kae-ya hae-yo/have to remember]) have to remember.
4. Warning: 기억하지 마세요([gi-eok-ha-ji ma-se-yo/don't remember]) don't remember.
A: Do you remember that person?
B: 네, 기억해요. B: ne, gi-eo-kae-yo.B: Yes, I remember.
A: 언제 봤어요? A: eon-je bwa-sseo-yo?A: When did you see him?
B: 어제 봤어요. B: eo-je bwa-sseo-yo.B: I saw him yesterday. - 기억하다([gi-eok-ha-da/remember])
A: What did you remember?
B: 비밀번호를 기억했어요. B: bi-mil-beon-ho-reul gi-eo-kae-sseo-yo.B: I remembered the password.
A: 잘했어요! A: jal-hae-sseo-yo!A: Well done!
B: 감사해요. B: gam-sa-hae-yo.B: Thank you. - 기억했어요([gi-eo-kae-sseo-yo/remembered])
A: What do you have to remember?
B: 이 단어를 기억해야 해요. B: i da-neo-reul gi-eo-kae-ya hae-yo.B: I have to remember this word.
A: 언제까지요? A: eon-je-kka-ji-yo?A: Until when?
B: 내일까지 기억해야 해요. B: nae-il-kka-ji gi-eo-kae-ya hae-yo.B: I have to remember until tomorrow. - 기억해야 해요([gi-eo-kae-ya hae-yo/have to remember])
• 기억하다([gi-eok-ha-da/remember]) remember
- 기억했어요([gi-eo-kae-sseo-yo/remembered]) remembered
- 기억하고 싶어요([gi-eok-ha-go si-peo-yo/want to remember]) want to remember
- 기억해야 해요([gi-eo-kae-ya hae-yo/have to remember]) have to remember
- 기억하지 마세요([gi-eok-ha-ji ma-se-yo/don't remember]) don't remember