Công thức thì QKĐ (V: to be)
(+) S + was/were + ...
(-) S + was/were + not ...
(?) Was/Were + S ... ?
S số ít, I, he, she, it + was
S số nhiều, you, we ,they + were
Công thức thì QKĐ (V: thường)
(+) S + V2/ed
(-) S + didn't + V1
(?) Did + S+ V1?
DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...
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11. returned
DHNB: yesterday
12. thought
13. went
DHNB: yesterday
14. drove
15. arrived / was
18. told / had
19. walked
20. saw
21. stopped / bought
22. was
23. didn't go
DHNB: last Sunday
24. Did she get
DHNB: last year
25. did you do / did
DHNB: last night
26. loved
27. got / had
DHNB: yesterday
28. bought
DHNB: last year
29. didn't go
DHNB: yesterday
30. had
DHNB: last night
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