`1.` have not had

`=>` since Thursday là `DHNB`

`2.` have seen

`=>` for five years là `DHNB`

`3.` have just realized

`=>` just là `DHNB`

`4.` has finished

`5.` has composed

`=>` so far là `DHNB`

`6.` has been

`=>` for seven hours là `DHNB`

`7.` has not had

`8.` has not played

`=>` since last year là `DHNB`

`9.` have you known 

`10.` Have you taken

`11.` has eaten

`=>` yet là `DHNB`

`12.` have been

`=>` several times là `DHNB`

`13.` have never been

`14.` Has she been

`15.` have lived

`16.` has the milkman left `-` has left

`17.` have bought

`18.` has written

`19.` have finished

`20.` Have you ever been

`=>` ever là `DHNB`

`--------------->`

Cấu trúc thì Hiện tại hoàn thành

`( + )` S + have/ has + V3/-ed + O

`( - )` S + have/ has not + V3/-ed + O

`( ? )` Have/ Has + S + V3/-ed + O?

`=>` We, you, they, I `->` Dùng have

`=>` He, she, it `->` Dùng has

Put the verbs in brackets into correct forms of present perfect tense.

1. haven't had

2. haven't seen 

3. have just realized 

4. has finished

5. has composed

6. has been

7. hasn't had

8. hasn't played

9. have you known

10. Have you taken

11. Has he eaten

12. have been

13. have never been

14. Has she been

15. have lived

16. has the milkman left - has left

17. have bought

18. has written

19. have finished

20. Have you ever been

Thì hiện tại hoàn thành:
- Cấu trúc: 
+ Khẳng định: S + has/have + V3 + O.
+ Phủ định: S + has/have + not + V3 + O.
+ Nghi vấn: Has/Have + S + V3 + O?
- Dấu hiệu nhận biết:
+ just = recently = lately: gần đây, vừa mới
+ already: rồi
+ before: trước đây
+ ever: đã từng
+ never: chưa từng, không bao giờ
+ yet: chưa
+ for + khoảng thời gian: trong khoảng 
+ since + mốc thời gian: từ khi 
+ so far = until now = up to now = up to the present: cho đến bây giờ
+ in/for/during/over + the past/last + thời gian: trong …. qua 

- Chúc cậu học tốt.