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,....

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1. She always brushes her teeth after getting up.

ADV chỉ tần suất + V 

2. She is usually late for school.

tobe + ADV chỉ tần suất

3. How often does she go shopping with her friends?

go - V-ing: hoạt động 

with Sb: với ai 

4. Does your mother often go to bed early?

5. Do you go home early in the evening?

in + buổi 

6. How often does she go swimming?

7. I often surf the Internet before I go to bed.

8. He plays football three times a week.

9. How often does she go to the library?

10. I go fishing twice a month

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