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Các công thức đổi HTHT - QKĐ

Type 1: 

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

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

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

Type 2:

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

--> S + started / began + to V / Ving 

--> It is / has been + time + since + S+ V2/ed 

Type 3: 

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

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

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1. The last time I called them was years ago.

2. I first met her 20 years ago.

3. My mother last did yoga a month ago.

4. I haven't seen her since last week.

5. My husband has worked for that company for 6 years.

6. This is the first time my sister has played this sport.

7. I have never travelled by plane before.

8. I haven't danced since last week's party.

9. This is the first time we have visited this place.

10. She has written to me since last July.

11. This is the first time I have seen a funny person like you.

12. I haven't swim in the sea for 2 years.

13. I last went shopping nearly a year ago.

14. My sister hasn't played basketball since the beginning of this year.

15. This is the first time they have eaten this fruit.

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