Giup với ạaa tớ cảm ơn ạaaaaaaaaa

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,....

Công thức thì QKTD 

(+) S + was/were + Ving 

(-) S + was/were+ not + Ving 

(?) Was/Were +S +Ving? 

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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1. took 

DHNB: last week 

2. saw 

It has been + time + since + S+  last + V2/ed 

3. started 

DHNB: ago

4. didn't know 

5. didn't know 

6. bought 

DHNB: last week 

7. was 

DHNB: yesterday 

8. finished

DHNB: ago 

9. did you last return 

DHNB: last 

10. phoned

The last time + S+ V2/ed + was+ time 

11. moved 

It's + time + since + S+ (last) + V2/ed 

12. started 

13. took 

DHNB: last week 

14. didn't come 

1DHNB: yesterday 

15. lived 

S + wish(es) + S+ V2/ed: ước ở hiện tại 

16. were learning 

DHNB: at this time yesterday (QKTD)

17. lived 

DHNB: ago 

18. were 

If 2: If + S+ were, S + would / could + V1 

20. wrote / haven't received 

DHNB: ago (QKD), since (HTHT)

21. lost 

DHNB: last month