I. Chia Đt ở thì QKĐ:

1. went ( DHNB : last week )

2. had ( DHNB : yesterday)

3. met ( DHNB : two week ago )

4. was ( DHNB: in 1992)

5. did...do ( DHNB : last night )

6. studied ( DHNB : last summer)

7. didn't visit ( DHNB : last week )

8. was ( DHNB : in 1997)

9. built ( DHNB : twenty years ago)

10. didn't ( DHNB: last Sunday)

11. began ( DHNB: 7 years ago )

12. lost ( DHNB: yesterday morning)

13. visited ( DHNB: last year)

14. were ( DHNB : in 1978)

15. Did....spend  ( DHNB : last summer )

16. cleaned ( DHNB : yesterday)

17. started ( DHNB : in 1998)

18. went( DHNB : last week )

19. spent ( DHNB : last Sunday)

20. was ( DHNB : last year)

B. Chia ĐT ở QKTD:

1. was watering ( DHNB : at 3:00 p.m yesterday)

2. were visitng ( DHNB:  at ten o’clock yesterday.)

3. were doing ( DHNB : at this time last night.) 

4. was feeding ( DHNB : at 7:00 last night)

5. were learning ( DHNB : At this time last year)

6. were playịng ( DHNB : At this time yesterday)

7. thiếu chủ ngữ nên bạn tự xác định nha :  was/were watching (DHNB : At 7:00 pm yesterday)

8. was watching/ was reading/was doing/was playing ( While + past/ present continous, past/ present countinous: Diễn tả hai hành động xảy ra đồng thời, song song trong hiện tại hoặc quá khứ.)

9. was having 

10. was doing ( DHNB : at the time yesterday)

C. Chia ĐT ở QKĐ hay QKTD:

1. arrived/slept ( When + simple past, simple past: Diễn tả hai hành động xảy ra song song, hoặc liên tiếp trong quá khứ)

2. was going/were having ( While + past/ present continous, past/ present countinous: Diễn tả hai hành động xảy ra đồng thời, song song trong hiện tại hoặc quá khứ.)

3. had/ was stoping( When + past continous, simple past: Diễn tả một hành động đang diễn ra, một hành động ngắn xen vào.)

Cấu trúc thì:
+ quá khứ đơn:

Động từ thường :

khẳng định :S+ Ved/pp

phủ định : S+ didn't + V

nghi vấn : Did + S+ V?

- Yes, S+ did

- No, S+ didn't

Tobe: 

khẳng định : I/ he/she/it/Danh từ số it+ was

We/you/they/ Danh từ số nhiều + were

phủ định :

I/ he/she/it/Danh từ số it+ wasn't

We/you/they/ Danh từ số nhiều + weren't

nghi vấn :

Was+ I/ he/she/it/Danh từ số it?

Were+ We/you/they/ Danh từ số nhiều ?

- Yes, S+ was/were

- No, S+ wasn't/weren't

+ Qúa khứ tiếp diễn:

khẳng định : I/ he/she/it/Danh từ số it+ was+ Ving

We/you/they/ Danh từ số nhiều + were+ Ving

phủ định : I/ he/she/it/Danh từ số it+ wasn't+ Ving

We/you/they/ Danh từ số nhiều + weren't+ Ving

nghi vấn :Was+ I/ he/she/it/Danh từ số it+ Ving

 Were+we/you/they/ Danh từ số nhiều  + Ving?

- Yes, S+ was/were

- No, S+ wasn't/weren't

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