Did you do your homework last night?
No, i didn't.
通常第一人称在变成一般疑问句时要变成第二人称
Did you do your homework last night?
No, i didn't.这是一问一答。
如果你要用第一人称,自问自答的话,如下:
Am i do my homework last night?
No, i didn't.
Did you do your homework last night? No i didn't.
Did you do your homework last night?
No,I didn't.
Did I do my homework last night?
Yes,I did.