1. have played
2. have lost
3. has written - hasn't receive
4. has been snowing
5. have you traveled
6. has been saving
7. has left
8. have found
9. has already climb
10. have lived - haven't managed
*Cấu trúc thì hiện tại hoàn thành:
(+)S + have/ has + PII
(-)S + haven’t/ hasn’t + PII
(?)Have/Has + S + PII?
`⇒` Yes, S + have/ has hoặc No, S + haven't / hasn't
*Cấu trúc thì hiện tại tiếp diễn:
(+) S + am/is/are + `V_(\text(ing))`
(-) S + am/is/are + not + `V_(\text(ing))`
(?) Am/is/are + S + `V_(\text(ing))` ?
`⇒` Yes, S + am/is/are hoặc No, S + am/is/are + not