1. I haven't really enjoued myself since your birthday party.  

2. My father hasn't seen his brother for nearly 20 years.  

3. How long is it since you learnt to drive?  

4. I haven't gone swimming since we were in Spain.  

5.  It is weeks since you tided up this room.

6. We have been looking for a flat for 2 months.

7. I haven't been to a night club before.

8. This is the first time they have ever heard such a thing.

9. This is the first time his authority has been challenged.

10.  It is 2 years since she left unviersity.

11. I’ve never known a more warm-hearted person than my mother.

12. It is over a year since I last saw them. 

13. It has rained since 2 o’clock.

`1.` I haven't really enjoued myself since your birthday party

`2.` My father hasn't seen his brother for nearly 20 years

`3.` How long is it since you learnt to drive?  

`4.` I haven't gone swimming since we were in Spain. 

`5.`  It is weeks since you tided up this room

`6.` We have been looking for a flat for 2 months

`7.` I haven't been to a night club before

`8.` This is the first time they have ever heard such a thing

`9.` This is the first time his authority has been challenged

`10.`  It is 2 years since she left unviersity

`11.` I’ve never known a more warm-hearted person than my mother

`12.` It is over a year since I last saw them

`13.` It has rained since 2 o’clock

___________________________________

`-` Áp dụng:

`@` thì hiện tại hoàn thành:

`->` S + have/has + Vpp + O.

`->` S + have/has + (not) + Vpp + O.

`->` Bị động: S + have/has(not) + been + Vpp + (by O)