Gúp em vs ạ 1. We last went to London two years ago. => We haven’t ………………………………………………………………… 2. Mary has played the piano 4 years ago. => Mary started ………………………………………………………………… 3. The last time I went to see them was over a year ago. => It’s …………………………………………………………… 4. She has never been to the ballet dancing before. => This is ……………………………………………………………… 5. I began learning English five years ago. => I have ……………………………………………………………………… 6. She hasn’t gone out with him for 5 months. => The last time ………………………………………………………… 7. How long is it since they bought the house? => When …………………………………………………………………… 8. We haven’t seen Tom since he moved to London. …………………………………………………………………………………………………………………………… 9. It is 10 years since I last visited Da Lat. => ……………………………………………………………………………… 10. We started working here three years ago. => …………………………………………………………………………… 11. Mr. Brown bought this car five years ago. => …………………………………………………………………………… 12. I started to study English when I was 10 years old. => ………………………………………………………………… 13. When did you collect stamps? => ……………………………………………………………………………… 14. It’s a long time since we last went to the cinema. => …………………………………………………………………………………………………………………………… 15. I last went swimming in 2001. => …

`Đáp` `án:`

1. We haven't gone to London for two years.

2. Mary started playing the piano for 4 years.

3. It's over a year since I last went to see them.

4. This is the first time she has been to the ballet dancing.

5. I have learnt English for five years.

6. The last time she went out with him was 5 months ago.

7. When did they buy the house? 

8. The last time we saw Tom was when he moved to London.

9. I haven't visited Da Lat for 10 years.

10. We have worked here for three years.

11. Mr. Brown has had this car for five years.

12. I have studied English since I was 10 years old.

13. How long have you collected stamps?

14. We haven't gone to the cinema for a long time.

15. I haven't gone swiming since 2001. 

------------------------------------------------

Các công thức đổi HTHT - QKĐ

Loại 1: 

S + has/have + not + V3/ed + for/since + time 

→ S + last + V2/ed 

→ The last time + S+ V2/ed + was + time + ago

→ It is / has been + time + since + S+ (last) + V2/ed 

Loại 2: 

How long + has/have + S+ V3/ed?

→ When + did + S + V1?

→ How long is it + since + S+ V2/ed ?

→ How long ago + did + S + start / begin + to V / Ving? 

Loại 3:

S + has/have + V3/ed + for/since + time 

→ S + started / began + to V / Ving 

→ It is / has been + time + since + S+ V2/ed 

Loại 4: 

S + has/have + not/never + V3/ed + ... before

→ This/It is the first time + S+ has/have+ V3/ed

Loại 5:

When + did + S + last + V1?

→ When + was the last time + S + V2/ed?