`-` Thì HTĐ :

`+` KĐ : S + Vs / es

`=>` 

`-` I , You , We , They `+` V-inf

`-` He , She , It `+` Vs / es

`+` PĐ : S + don't / doesn't + V

`=>`

`-` I , You , We , They `+` don't

`-` He , She , It `+` doesn't

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

`=>` 

`-` Do `+` You , They

`-` Does `+` He , She , It 

`=>` `DHNB` : every , always , usually , often , sometimes , never , rarely , ...

`Ex.5`.

`-` Question ( HTĐ ) : Do / Does + S + V ?

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

`1`.Does / he does

`2`.Do / I don't

`3`.Do / they don't

`4`.Does / it does

`5`.Does / he doesn't

`6`.Do / they don't

`7`.Do / they don't

`8`.Does / it does

`Ex.6`.

`1`.plays

`2`.have

`3`.goes

`4`.circles

`5`.starts

`6`.doesn't study

`7`.teaches

`8`.likes

`9`.washes

`10`.don't have

`\text{# TF}`