`D` Nam usually does his homework after dinner.

`->` Hiện tại đơn - usually

`(+)` S + Vs/es

`(-)` S + don't/doesn't + V

`(?)` Do/Does + S + V ?

`-` Loại `A` : Thiếu adj sở hữu "his"

`-` Loại `B`, `C` : Adj tần suất thường đứng trước V

$@H$

Nam / after dinner. / his homework / does / usually

a. Nam usually does homework after his dinner.

b. Nam does dinner usually after his homework.

c. Nam does usually his homework after dinner.

d. Nam usually does his homework after dinner.

vì:

$S + V(e/es) + ……I ,$

We, You, They  +  V (nguyên thể)

He, She, It  + V (s/es)

Ex:  I usually go to bed at 11 p.m. (Tôi thường đi ngủ vào lúc 11 giờ)