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 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 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 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, ...

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 HTHTTD

(+) S + has/have + been + Ving

(-) S + has/have + not + been + Ving

(?) Has/Have + S+ been + Ving?

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4. sets 

5. is 

DHNB: often (HTD)

6. am doing / think / know 

DHNB: at the moment, now (HTTD)

7. rains / is raining 

DHNB: now (HTTD)

8. is cooking / cooks 

DHNB: at present (HTTD), always (HTD)

9. saw 

DHNB: last year (QKD)

10. did you do 

DHNB: yesterday (QKD)

11. Did you watch 

DHNB: last night (QKD)

12. was

DHNB: in 1980 (QKD)

13. paid

DHNB: last summer (QKD)

14. started / was

15. spent / painting 

DHNB: ago (QKD)

S + spent + time + Ving: ai dành bao nhiêu thời gian làm gì

16. is knocking 

DHNB: Listen! (HTTD)

17. write

DHNB: every day (HTD)

18. belongs 

19. flow

DHNB: usually (HTD)

20. moved 

DHNB: ago (QKD)

21. is reading / am learning / is doing 

DHNB: at this time (HTTD)

22. did you study 

DHNB: ago  (QKD)

23. didn't you phone 

DHNB: last Tuesday (QKD)

24. lived 

DHNB: in 1975 (QKD)

25. wasn't / is living 

DHNB: last Christmas (QKD), at that moment (HTTD)

26. is going 

27. is / will plant 

If 1: If + HTD, TLD

28. did you have 

29. has lost / has been looking 

30. saw 

DHNB: last night (QKD)

`color{orange}{~MiaMB~}`