1. I often ride a bike to school.

-> I don't often ride a bike to school .

-> Do you often ride a bike to school ?

2. He usually pedal a duck boat on Saturday.

-> He doesn't usually pedal a duck boat on Saturday.

-> Does he usually pedal a duck boat on Saturday ?

3. Nam like to ride a horse.

-> Nam doesn't like to ride a horse.

->Does Nam like to ride a horse ? 

4. Nancy's father has a car.

-> Nancy's father doesn't have a car.

-> Does Nancy's father have a car ?

Because :

+Phủ định có not ( thêm not sau S )

+ Nghi vấn có dấu hỏi ( Đảo trợ động từ lên đầu câu )

-> Cấu trúc thì Hiện tại đơn :

Khẳng định (+) : S + Vnt / Vs,es

Phủ định (-) : S + donot ( don't ) / doesnot ( doesn't )

Nghi vấn (?) : Do / Does + S + Vnt ?

                      Yes , S + do/does

                      No , S + don't / doesn't 

#anh

`-` Thì HTĐ ( PĐ `-` NV ) :

`+` PĐ : S + don't / doesn't + V

`+` NV : Do / Does + S + V ?

`+` Reply : Yes , S + do / does `-` No , S + don't / doesn't

`=>` `DHNB` : often , usually , always , ...

`1`.

`( - )` I don't often ride a bike to school 

`( ? )` Do you often ride a bike to school ? ( Yes , I do `/` No , I don't )

`2`.

`( - )` He doesn't usually pedal a duck boat on Saturday

`( ? )` Does he usually pedal a duck boat on Saturday ? ( Yes , he does `/` No , he doesn't )

`3`.

`( - )` Nam doesn't like to ride a bike

`( ? )` Does Nam like to ride a bike ? ( Yes , he does `/` No , he doesn't )

`4`.

`( - )` Nancy's father doesn't have a car 

`( ? )` Does Nancy's father have a car ? ( Yes , he does `/` No , he doesn't )

`\text{# Kirigiri}`