Công thức thì HTHT

(+) S + has/have + V3/ed 

(-) S + has/have + not + V3/ed 

(?) Has/Have + S+ V3/ed?

DHNB: before, since + mốc thời gian, for + khoảng thời gian, yet, already, just,....

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1. has gone 

2. has worked

DHNB: since last night  

3. have been 

DHNB: since 

4. have met 

DHNB: before 

5. has collected 

6. has used 

DHNB: for more than six years 

7. haven't played 

DHNB: since

8. has improved

DHNB: since  

9. have looked for

DHNB: for ages  

10. haven't received

DHNB: since  

11. haven't seen

DHNB: recently  

12. Have you seen 

13. has written 

DHNB: for three years 

14. haven't contacted 

DHNB: for a long time 

15. has worn 

DHNB: since 

16. have been

DHNB: for nearly three years  

17. have you known  / have known 

DHNB: for five years 

18. Has your dog bitten 

19. haven't seen 

DHNB: since 

20. hasn't finished

DHNB: yet  

21. have just made

DHNB: just  

22. Has she fed 

DHNB: yet 

23. hasn't seen

DHNB: since 

24. have already finished 

DHNB: already 

25. has just opened

DHNB: just  

26. has been

DHNB: since  

27. have you been / have been 

28. has just gone 

DHNB: just 

29. has stolen 

30. haven't you mended

31. has the milkman left 

32. hasn't he finished / has had 

33. Haven't you made 

34. have collected 

DHNB: since 

35. haven't finished 

36. have stayed 

DHNB: since April 

37. has driven 

DHNB: since 2000

38. haven't talked

DHNB: since  

39. has learnt

DHNB: since  

40. haven't written 

DHNB: since 

41. hasn't phoned 

DHNB: since 

42. haven't had / have been 

DHNB: since 

43. Has the plane arrived

DHNB: yet 

44. have received 

DHNB: recently 

45. Has he worked 

DHNB: since early morning 

46. has stolen 

DHNB: since last night