đề bài : chuyển thành thì hiện tại đơn , và thì hiện tại tiếp diễn

`16` have .

`17` have .

`18` is looking `-` is eating .

`19` are .

`20` Does your mother walk .

`21` is `-` are learning .

`22` are you doing .

`23` Does your mother walk .

`24` don't play .

`25` Is Hai working .

`26` is doing .

`27` are playing `-` play .

`28` is the old man living .

`29` teaches `-` is teaching .

`30` is studying .

`-` Cấu trúc thì hiện tại đơn :

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

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

`(` `?` `)` Do/does + S + V-inf + O ... `?`

`-` Cấu trúc thì hiện tại tiếp diễn :

`(` `+` `)` S + is/am/are + V_ing + O ...

`(` `-` `)` S + isnot/arenot/amnot + V_ing + O ...

`(` `?` `)` Is/am/are + S + V_ing + O ... `?` 

`color[pink][#Ngocmai2k9]`

`-` 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

`15`.have

`16`.have

`17`.am eating / are playing

`18`.is looking / is eating

`19`.are

`20`.Does ... walk ?

`21`.is / are learning

`22`.are ... doing ?

`23`.Does ... walk ?

`24`.don't play

`25`.Is ... working ?

`26`.is doing

`27`.are playing / play

`28`.is ... living ?

`29`.teaches / is teaching

`30`.is studying

`\text{# TF}`