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: thường) 

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

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

1. swam

DHNB: last week (QKD)

2. am cooking 

DHNB: now (HTTD) 

3. had slept 

Before + QKD, QKHT

QKHT: S + had+ V3/ed 

4. had gone 

After + QKHT, QKD 

5. is raining 

DHNB: Look! (HTTD)

6. will go 

DHNB: next week (TLD)

7. has read

DHNB: recently (HTHT)

8. has just gone 

DHNB: just (HTHT)

9. have ever swum 

DHNB: ever (HTHT)

10. has already sung 

DHNB :already (HTHT)

11. has come 

12. read

DHNB: once a week (HTD)

13. sings 

DHNB: every day (HTD)

14. has gone 

DHNB: recently (HTHT)

`color{orange}{~MiaMB~}`