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 HTĐ (V: tobe)

(+) S + am/is/are ..

(-) S + am/is/are + not .. 

(?) Am/Is/Are + S + ... ? 

I + am

S số ít, he, she, it + is

S số nhiều, you ,we, they + are

Công thức thì HTĐ (V: thường)

S số ít, he, she, it 

(+) S + Vs/es

(-) S+ doesn't + V1 

(?) Does +S +V1?

S số nhiều, I, you, we, they

(+) S + V1 

(-) S+ don't + V1 

(?) Do + S+ V1? 

DHNB: always, usually, sometimes, often, never, seldom,....

Công thức thì TLĐ

(+) S + will + V1 

(-) S + won't + V1 

(?) Will + S+ V1? 

DHNB: in the future, in + năm ở TL, in + time, next week, next year, ....

Công thức thì HTTD 

(+) S + am/is/are + Ving 

(-) S + am/is/are + not + Ving 

(?) Am/Is/Are +S +Ving? 

DHNB: now, right now, (!), at present, at the moment,.....

Công thức thì QKTD 

(+) S + was/were + Ving 

(-) S + was/were+ not + Ving 

(?) Was/Were +S +Ving? 

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, ...

-------------------------------------------------

1. is arriving 

DHNB: now (HTTD)

2. ride / am

DHNB: now

HTD + when + HTD 

3. aren't watching 

DHNB: now (HTTD)

4. studies

DHNB: often (HTD)

5. were drinking 

DHNB: at this time last night (QKTD)

6. does

DHNB: every day (HTD)

7. was

DHNB: last Sunday (QKD)

8. Were they 

DHNB: ago (QKD)

9. are 

DHNB: now (HTD)

10. want 

11. Was Lan having 

DHNB: at this time yesterday (QKTD)

12. is having 

DHNB: at this time (HTTD)

13. Are they having 

DHNB: now (HTTD)

14. is having 

DHNB: at present (HTTD)

15. was he doing 

DHNB: at 7 o'clock yesterday (QKTD)

16. isn't cooking 

DHNB: now (HTTD)

17. haven't met / left 

HTHT + since + QKD 

18. dislike 

19. is chatting 

DHNB: now (HTTD)

20. goes 

DHNB: rarely (HTD)

21. Do you want 

22. watched

DHNB: yesterday evening (QKD)

23. didn't meet 

DHNB: last Monday (QKD)

24. Was his mum 

DHNB: ago (QKD)

25. are studying 

DHNB: Shh! (HTTD)

26. will they buy 

DHNB: next week (TLD)

27. will meet

DHNB: in two weeks (TLD)

28. will stay 

DHNB: next Monday (TLD)

29. will be 

DHNB: tomorrow afternoon (TLD)

30. is reading 

DHNB: now (HTTD)

31. worked 

DHNB: yesterday afternoon (QKD)

`color{orange}{~MiaMB~}`