`-` 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 , ...

`Ex.4`.

`2`.Is the gardener ? / No , he isn't . He is planting

`3`.Is the house painter ? / No , he isn't . He is wearing green caps

`4`.Is she ? / No , she isn't . She is reading

`5`.Are ? / No , they aren't . They are running

`Ex.5`.

`1`.Are you picking flowers this afternoon ?

`2`.Are you wearing a scarf and gloves ?

`3`.Are you raking leaves now ?

`4`.Do you have a raincoat ?

`->` Thì HTĐ ( NV ) : Do / Does + S + V ?

`->` Do `+` you , they 

`5`.Doesn't he swim well

`->` Thì HTĐ ( NV - PĐ ) : Don't / Doesn't + S + V ?

`->` Doesn't + he , she , it 

`6`.Is it raining outside ?

`\text{# TF}`