Did you do your homework yesterday?

[Encolpius]

I am not sure if the action in that sentence is competed or uncompleted.

- Did you do your homework yesterday?
- Yes, I did. (does it mean the student is completely prepared?)

and can't I ask?
- Have you done your homework?
- Yes I've done it yesterday.

thanks a lot.

[orangutan]

I am not sure if the action in that sentence is competed or uncompleted.

- Did you do your homework yesterday?
- Yes, I did. (does it mean the student is completely prepared?)

Yes, it does.

and can't I ask?
- Have you done your homework?
- Yes I've done it yesterday.

The reply would have to be "I did it yesterday", because a particular time in the past is referred to.

You could also say simply "Yes, I have", or "Yes, I have; I did it yesterday."

[bhaisahab]

I am not sure if the action in that sentence is competed or uncompleted.

- Did you do your homework yesterday?
- Yes, I did. (does it mean the student is completely prepared?)
This means that the homework has been done, it is completely finished.
and can't I ask?
- Have you done your homework? Yes you can ask this.
- Yes I've done it yesterday. If you are going to say when you did it you should use the simple past "Yes I did it yesterday", we don't use present perfect with a specific time reference.

thanks a lot.

Bhai.