1. don't visit
2. DOes Mai go - goes
3. give
4. plays - doesn't like
5. do they go
6. don't study - is
7. Do your parents watch
8. does
9. use
10. doesn't usually play
__
Thì hiện tại đơn (Present Simple):
(+) Số ít: S+Vs/es+O
Số nhiều: S+V+O
(-) S+doesn't (số ít)/don't (số nhiều)+V+O
(?) Does (số ít)/Do (số nhiều)+S+O?
.
be: chia là "is" khi S là "he, she, it, N số ít";
chia là "am" khi S là "I";
chia là "are" khi S là "they, we, you, N số nhiều.

Ex3:

$\text{1.}$ don't visit

$\text{2.}$ Does Mai go - goes

$\text{3.}$ give

$\text{4.}$ plays - doesn't like

$\text{5.}$ do they go

$\text{6.}$ don't study - is

$\text{7.}$ Do your parents watch

$\text{8.}$ does

$\text{9.}$ use

$\text{10.}$ doesn't usually play

$\text{* HTD: Với V}$

$\text{(+)}$ S + V<s,es>

$\text{(-)}$ S + don't/ doesn't + V<infi>

$\text{(?)}$ Do/ Does + S + V<infi>?

$\text{Với be}$ 

$\text{(+)}$ S + is/ are/ am + O.

$\text{(-)}$ S + isn't/ aren't/ am not + O.

$\text{(?)}$ Is/ Are/ Am + S + O?