`-` 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 , always , often , ...

`-` 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 , ...

`1`.are / go

`2`.don't go

`3`.is / goes

`4`.doesn't go

`5`.is / are

`6`.is

`7`.are

`8`.is / is taking

`9`.is / works

`10`.isn't working / is playing

`11`.do you do ? / watch

`12`.are you doing ? / am watching

`13`.does Lan do ? / watches

`14`.is Lan doing ? / is watching

`15`.doesn't work / works

`16`.does your mother travel ?

`\text{# TF}`