Ok, Here you go. 1) 했+잖아 I told you not to come here again. 여기 다시 오지말라고 했잖아.(경고) You said that before. 그거 전에 말했잖아.(지겨워..같은말 듣기) When I asked you, you said ok. 내가 물어봤을때 너 괜찮다고 했잖아. (근데 왜 지금은 딴소리야..) I already told you, I don't konw. 모른다고 이미 말했잖아.(왜 자꾸 물어봐) You scared me to death. 간떨어질뻔 했잖아. 2) 아니+잖아 This is not my handwriting 이건 내 글씨체가 아니잖아(놀람) It's not a big deal 별일도 아니잖아(화풀어) Can you do me a favor, it's not a big deal please~ 부탁좀 들어주라, 어려운일도 아니잖아. This is not what I ordered. 이건 내가 주문한게 아니잖아요.(놀람+화남) It doesn't surprise me. 뭐 새삼스러운 일도 아니잖아. 3) 왔+잖아 Don't worry, I am here now. 걱정마 내가 왔잖아. 4) 먹었+잖아. You want more? but you just had dinner. 더 달라고? 너 방금 저녁먹었잖아.(놀람) 5) 맞+잖아 See, I told you! 거봐 내말이 맞잖아. 6) 되+잖아 Check it for yourself 직접확인해 보면 되잖아(날 못믿어?) That can wait. 나중에 해도 되잖아(왜그렇게 급해?) 7) 하+잖아 Think of some excuse, you are so good at it 핑계대봐, 너 그런거 잘하잖아(비꼼) 8) 있+잖아 Tell you what, 있잖아, 그러니까.. I am in the shower. 나 샤워하고 있잖아.(그래서 지금은 안돼) Guess what? 있잖아요? Oh, come on, I know you can. 제발 좀, 넌 할 수 있잖아.(안 그래?) That can happen. 그럴수도 있잖아.(왜그래..) You can make it, go for it. I will stand by you- 넌 할수있어, 한번해봐, 내가 있잖아. The sign says "Don't smoke here". 여기서는 담배피지 말라고 씌여 있잖아.(근데 왜 여기서 담배피워) Don't be, Here I am. 그러지마 내가 여기 있잖아(위로) I will have to stop writing down sentences here because I've got pain in my fingers.^^ ^________^

You can use it to remind someone of something that you think they are supposed to know. Some more examples: A: (talking with C) blablabla C: blablabla B: (trying to say something but B's butting into their conversation in the end) A : 나 지금 C랑 얘기하잖아. I'm talking with C now. (Don't you know?) A: C is nasty and wicked, I don't know why you're being nice to C. B: 알아, 근데 C가 많이 아프잖아. I know, but C is very unwell. A: (watching a TV drama and crying) B: Why are you crying? A: 슬프잖아. It's sad, isn't it? Sometimes it carries certain tones like: (a phone conversation) A: Hey! Wanna hang out with me outside? B: Yep! (opens the curtains and watches out the window) B₁: 야, 비온다. Hey, it's raining. B₂: 야, 비오잖아. Hey, it's raining. (Don't you know? How can we hang out outside while it's raining.)

hello~ Though you say you know the meaning of the word, I give you a few simple sentences. 이건 아니잖아. 너때문에 놀랐잖아. 내가 말했잖아. 자꾸 신경쓰이잖아.and so on. um...I believe you can understand that I write the sentences. ^^