`1.` She lives in Thailand.

`-` Negative: She doesn't live in Thailand.

`-` Interrogative: Does she live in Thailand.?

`2.` Are they students?

`-` Affirmative: They are students.

`-` Negative: They aren't students.

`3.` This is not the bookstore.

`-` Affirmative: This is the bookstore.

`-` Interrogative: Is this the bookstore?

`4.` Does Helen walk to school?

`-` Affirmative: Helen walks to school

`-` Negative: Helen doesn't walk to school

`@` Kiến thức thì hiện tại đơn : 

`-` Khẳng định : S + V(s/es) + .....      

`-` Phủ định : S + don't/doesn't + V .......

`-` Nghi vấn : Do/does + S + V ? 

`-` Dhnb : every morning, every afternoon,every day , often , always , usually

1. Negative: She doesn’t live in Thailand.

Interrogative: Does she live in Thailand?

2. Affirmative: They are students.

Negative: They are not students.

3. Affirmative: This is the bookstore.

Interrogative: Is this the bookstore?

4. Affirmative: Helen walks to school.

Negative: Helen doesn’t walk to school.