`-` Thì HTĐ :

`+` KĐ : S + Vs / es

`+` PĐ : S + don't / doesn't + V

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

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

`=>`

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

`+` He , She , It `+` Vs / es `-` doesn't V-inf

`11`.

`( - )` He doesn't help me

`( ? )` Does he help you ?

`12`.

`( + )` Tim listens to music in his free time

`( - )` Tim doesn't listen to music in his free time

`14`.

`( - )` I don't study Vietnamese on Monday

`( ? )` Do you study Vietnamese on Monday ?

`15`.

`( - )` They don't buy the new equipment

`( ? )` Do they buy the new equipment ?

`\text{# TF}`

`11` 

`( - )` He doesn't help me.

`( ? )` Does he help you?

`12`

`( + )` Tim listens to music in his free time.

`( - )` Tim doesn't listen to music in his free time.

`14`

`( - )` I don't study Vietnamese on Monday.

`( ? )` Do you study Vietnamese on Monday ?

`15`

`( - )` They don't buy the new  equipment.

`( ? )` Do they buy the new equipment ?

Áp dụng `:`

`- -` Hiện tại đơn `- -`

*Với động từ tobe `:`

`( + )`S + tobe(am/is/are ) + O

`( - )` S + tobe( am/is/are ) -not + O

`( ? )` Tobe ( am/is/are ) S + O?

`->` Yes, S + tobe

`->` No, S + tobe-not

* Với động từ thường `:`

`(  + )` S + V ( s/es ) + ....

`( - )` S + don't/doesn't + `V_0` + ...

`( ? )` Do/Does + S + `V_0` + ...?

`->` Yes, S + do/does

`->` No, S + don't/doesn't

`- - - -- --- - `

$\text{@Tnhye@}$