Примеры на тему past continious, present continious, future continious. примеры на тему past perfect, present perfect, future perfect.

At 3 o'clock yesterday afternoon they were reading a book (Past Cont.)
He is reading a book right now (Present Cont.)
This time next week, I'll be reading a book (Future Cont.)

She had read a book by 5 o'clock in the afternoon. (Past Perf.)
She has bought a new book (Present Perf.)
They will have finished their meeting by 5 o'clock (Future Perf.)