`-` HTĐ :

`(+)` S + V-es,s +....

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

`(?)` ( Wh-questions ) Do / Does + S + V-inf +.... ?

`-` HTTD :

`(+)` S + tobe + V-ing +...

`(-)` S + tobe + not + V-ing +...

`(?)` ( Wh-questions ) Tobe + S + V-ing +...

`1.` When do they often have breakfast ?

`2.` Who are the children waiting now ?

`3.` We aren't playing soccer at the moment .

`4.` Do your friends speak English every day ?

`5.` My brother isn't walk to school at the moment .

`6.` How is your sister travelling to school now ?

`7.` Are we travelling to Vinh now ?

`8.` What are the boys doing in the class at the moment ?

`-` Thì HTĐ :

`+` KĐ : S + Vs / es

`+` PĐ : S + don't / doesn't + V

`+` NV : Do / Does + S + V ? 

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

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

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

`=>` Dùng để diễn tả hành động xảy ra ở Hiện tại hoặc nói về sự thật

`-` Thì HTTD :

`+` KĐ : S + is / am / are + V-ing

`+` PĐ : S + isn't / 'm not / aren't + V-ing

`+` NV : Is / Am / Are + S + V-ing ?

`=>` `DHNB` : at the moment , at present , now , right now , Look ! , Be quiet ! , ...

`*` I `+` am 

`*` He , She , It `+` is

`*` You , We , They `+` are

`=>` Dùng để diễn tả hành động đang diễn ra hoặc nói về dự định của ai đó trong Tương lai

`1`.When do they often have breakfast ?

`2`.Who are the students waiting for now ?

`3`.We aren't playing soccer at the moment

`4`.Do your friends speak English every day ?

`5`.My brother isn't walking to school at the moment

`6`.How is your sister travelling to school now ?

`7`.Are we travelling to Vinh now ?

`8`.What are the boys doing in the class at the moment ?

`\text{# TF}`