1. He has been working
2. have been waiting
3. has been living
4. has been playing
5. have you been learning
6. have been looking
7. have been liking
8. hasn't been running
9. has she been working
10. hasn't been
Cấu trúc thì Hiện tại hoàn thành tiếp diễn (The present perfect continuous tense):
(+) S + has/have + been + V-ing.
(-) S + has/have + not + been + V-ing.
(?) Has/Have + S + been + V-ing?
*Has/have chia theo chủ ngữ.
