50 БАЛЛОВ!
Придумайте ПО 3 (3 предложения в 3 формах для каждого времени) утвердительных предложений с временами Present Perfect, Past Perfect и Future Perfect, поставьте их в вопросительную и отрицательную формы.

Ответ:

Present perfect- I have already done my homework

I haven't done my homework

Have I done my homework?

Past perfect - I had finished my work when he came here

I hadn't finished my work when he came here

Had I finished my work when he came here?

Future perfect - I shall have written the letter

I shall not have written the letter.

Shall I have written the letter?

Объяснение: