`-` Thì HTĐ :

`+` KĐ : S + Vs / es `-` S + is / am / are + adj / n

`+` PĐ : S + don't / doesn't + V `-` S + isn't / 'm not / aren't + adj / n

`+` NV : Do / Does + S + V ? `-` Is / Am / Are + S + adj / n ?

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

`*` I `+` am ( not ) `-` V-inf

`*` He , She , It `+` is ( not ) `-` Vs / es

`*` You , We , They `+` are ( not ) `-` V-inf

`=>` 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`.is eating

`2`.is calling

`3`.am listening

`4`.Are ... playing ?

`5`.are ... waiting ?

`6`.gets / brushes

`7`.doesn't live / lives

`8`.do ... go ?

`9`.is / is listening

`10`.are playing

`11`.goes / walks

`12`.Do ... live ? / Is it ?

`13`.am eating / is listening

`14`.are going

`15`.Is ... working ?

`16`.is doing

`17`.are playing

`18`.is ... living ?

`19`.is / are learning

`20`.is studying

`\text{# TF}`