Have you already done it? or Have you done it yet? Which is correct? ->They both are. >1st question: You are asking someone if they have done something. (mostly likely needs to be done.) ex: "Have you already washed the clothes? If not, I'll do them." >2nd question: Same. ex: "Have you done that yet? or you could say, "Have you tried doing that." (pointing at something, looking at something, noticing something with another person, talking about something ; could be food, a game, laundry, business reports, application, etc.)

Both are written correctly but context/meaning-wise is different.

As I know, we can`t use ''already'' in Present Perfect Tense in questions, only ''yet'' although we translate it in this case like ''уже''.

have you already done it? or. Have you done it yet? i mean both are correct.

Have you already done it? - correct.