1. Have read
-> Thì HTHT : S have/has VPII
2. Was doing - sent - had given
3. Will have read
-> Thì TLHT: S will have VPII
4. Was doing
-> QKTD when QKĐ
5. Will be living
-> thì TLTD: S will be Ving
6. Will be working
-> thì TLTD: S will be Ving
7. Finish
-> as soon as : ngay khi
8. Looked - was trying
-> when QKĐ, QKTD
9. Were - had started - got
-> thì QKHT: S had VPII
10. Have worked
-> Thì HTHT : S have/has VPII
11. Have ever met
-> Thì HTHT : S have/has VPII
12. Came - had stood
-> thì QKHT: S had VPII
13. Had buzzed - answered
-> After QKHT, QKĐ
14. Had - was repairing
-> QKĐ while QKTD
15. Saw - was sitting - told - had been reading
-> Phải lùi thì của câu gián tiếp về quá khứ hoàn thành tiếp diễn
16. Was weeding - was cutting
-> QKTD while QKTD
17. Will be waiting
-> thì TLTD: S will be Ving
18. Will have finished
-> Thì TLHT: S will have VPII
19. Have seen
-> Thì HTHT : S have/has VPII
10. Had attended
-> thì QKHT: S had VPII