1. has never seen

2. has just won

3. have already written

4. hasn't prepared

5. have already received

6. has never eaten

7. haven't met

8. Have you ever been

9. have just missed 

10. have you just sent

11. have already done

12. have never flown 

13. have you already bought 

=> thì hiện tại hoàn thành

S + have/ has + V3

S + have/ has not + V3

Have/ has + S + V3?

Wh- + have/ has + S + V3?

DẤU HIỆU

Just , Already , Ever , Never , Yet , Since 

1. Has-seen

2. Have-won

3. Have-written

4. Has't prepared     

5. Have-received       

6. Has-eaten

7. Haven't met

8. Have-been

9. Have-missed

10. Have-sent

11. Have-done

12. Have-flown

13. Have-bought

                                       _________________________________________________

                                                                  @Học tốt nhé.^^.

                                                              Có gì bạn hỏi mik nhé