`-` 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` : always , often , usually , seldom , never , sometimes , ...

`=>`

`-` ĐT Tobe ( Dùng chung với Hiện tại đơn và Hiện tại tiếp diễn ) : 

`+` I `+` am ( not )

`+` He , She , It `+` is ( not )

`+` You , We , They `+` are ( not )

`-` ĐT Thường :

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

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

`-` 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` : now , at the moment , at present , Look ! , Listen ! , Be quiet ! , ...

`-` Thì QKĐ :

`+` KĐ : S + Ved / V2 `-` S + was / were + adj / n

`+` PĐ : S + didn't + V `-` S + wasn't / weren't + adj / n

`+` NV : Did + S + V ? `-` Was / Were + S + adj / n ?

`=>` `DHNB` : ago , yesterday , last , in + Thời gian trong Quá khứ , ...

`=>`

`+` I , He , She , It `+` was

`+` You , We , They `+` were

`62`.Are ... working ?

`63`.is 

`64`.is running / wants

`65`.am doing / think / know

`66`.rains / is raining

`67`.is cooking / cooks

`68`.saw

`69`.is sleeping

`70`.did ... do ?

`71.1`.Did ... watch ?

`71.2`.was

`72`.paid

`73`.started / was

`74`.is knocking

`75`.need

`76`.left

`77`.am studying

`78`.opens / closes

`79`.are you looking ?

`80`.is coming / don't want

`81`.grow / don't grow

`\text{# TF}`