EX5 :

1. She has lived in Ha Noi for 2 years.

2. He has studied English since he was young.

3. This is the first time I have eaten this kind of food.

4. She is the most beautiful girl I have ever seen.

5. I have never read such a good novel.

EX6 :

1. We haven't eaten out since mom'birthday .

2. How long have you lived here ?

3. Have you ever been to Russia ?

4. She hasn't met kids since Christmas.

5. Have they repaired lamps yet ?

EX4:     

1. My father hasn't played any sport since last year. ( Vì từ " since " là dấu hiệu của thì hiện tại hoàn thành )

2.Some people are attending the meeting right now. ( Vì từ " now " là thì hiện tại tiếp diễn)

3. I'd better have a shower. I haven't had one since Thursday.( Vì có từ " since ")

4. I don't live with my family now and we haven't seen each other for five years.

5. Where is your mother? She is having dinner in the kitchen.

6. Why are all these people here? What is happening?

7. I have just realized that there are only four weeks to the end of term.

8. She has finished reading two book this week.

9. At present, he is composing a piece of music.

10. We are having dinner in a restaurant right now.