lấy 5 ví dụ về thì hiện tại đơn và chuyển thành câu phủ định và nghi vấn

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. 

(+) They are students.

(-) They aren't students.

(?) Are they students?

2.

(+) She goes to school every day.

(-) She doesn't go to school every day.

(?) Does she go to school every day?

3.

(+) He plays badminton once a week.

(-) He doesn't play badminton once a week.

(?) Does he play badminton once a week?

4.

(+) My grandparents like watching TV.

(-) My grandparents don't like watching TV.

(?) Do your grandparents like watching TV?

5.

(+) My brother wants an apple.

(-) My brother doesn't want an apple.

(?) Does your brother want an apple?

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