1. My brother often sleeps on the floor.

2. Does he sometimes stay up late?

3. I always always do my housework with my brother.

4. Peter and Mary never come to class on time.

5. Why does Johnson get good marks?

`\text{Hiện tại đơn(Present Simple)}`

$\textit{(+)S + (frequency adv) + V(s/es) + (O).}$

$\textit{(-)S + (frequency adv) + don't/doesn't + Vinf + (O).}$

$\textit{(?)Do/Does + S + (frequency adv) + Vinf + (O).}$

1.My brother often sleeps on the floor.

2. Does he sometimes stay up late?

3. I always do my housework with my brother.

4. Peter and Mary never come to class on time.

5. Why does Johnson get good marks?

Hiện tại đơn: 

(+) S + V(s/es) + .....

(-) S + don't/doesn't + V(nguyên)

(?) Do/Does + S + V(nguyên)