Làm bài này giúp mình nhé cảm ơn ak

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 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. is / are learning

Hành động xảy ra ở hiên tại ngay thời điểm nói --> HTTD

2. are / doing

DHNB: now (HTTD)

3. Does / walk 

DHNB: every day (HTD)

4. don't play

DHNB: in the morning (HTD)

5. Is / working

DHNB: at the moment (HTTD)

6. is doing

DHNB: now (HTTD)

7. are playing / play
DHNB: at the moment (HTTD) - every afternoon (HTD)

8. is / living

DHNB: now (HTTD)

9. teaches / taught

DHNB: often (HTD) - this morning (QKD)

10. is studying

DHNB: now (HTTD)

11. have

DHNB: On Friday (HTD)

12. am eating / is playing

DHNB: at the moment (HTTD)

13. is looking / is eating

DHNB: now (HTTD)

14. are

15. Does your mother walk

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