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: 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 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. am having 

DHNB: now (HTTD)

2. did you do / did

DHNB: last night (QKD)

3. have you known 

4. have ever eaten

DHNB: ever (HTHT)

5. does your sister listen 

6. Do you like 

7. will come 

DHNB: tomorrow (TLD)

8. have been

DHNB: for over two years (HTHT)

9. will you do / rains 

If 1:If + HTĐ, TLĐ

10. won't rain 

DHNB: tomorrow (TLD)

11. is she doing 

DHNB: Look at that woman! (HTTD)

12. hasn't spoken / came 

HTHT + since + QKĐ

13. is sleeping 

DHNB: Don't make noise! (HTTD)

14. did you earn

DHNB: last month (QKD)

15. have never seen

DHNB: never, before (HTHT)

16. was /ate 

DHNB: last night (QKD)

17. have just painted

DHNB: just (HTHT)

18. likes / eats

DHNB: every day (HTD)

19. have ever seen

DHNB: ever (HTHT)

20. do you do 

`color{orange}{~MiaMB~}`