`5`.

`-)` The children aren't listening to their teacher.

`?)` Are the children listening to their teacher?

`6`.

`-)` A man isn't selling ice `-` cream in the park.

`?)` Is a man selling ice `-` cream in the park?

`7`.

`-)` The girls aren't dancing.

`?)` Are the girls dancing?

`___________________________________`

`***` Cấu trúc thì HTTD:

`+)` S + am/is/are + V-ing

`-)` S + am/is/are + not + V-ing

`?)` (Wh) + Am/Is/Are + S + V-ing?

Công thức thì HTTD 

(+) S + am/is/are + Ving 

(-) S + am/is/are + not + Ving 

(?) Am/Is/Are +S +Ving? 

I + am

S số ít, he, she, it + is

S số nhiều, you ,we, they + are

DHNB: now, right now, (!), at present, at the moment,.....

------------------------------------------------------------------

5.

(?) Are the children listening to their teacher?

6.

(-) A man isn't selling ice-cream in the park.

(?) Is a man selling ice-cream in the park?

7.

(-) The girls aren't dancing.

(?) Are the girls dancing?

`color{orange}{~LeAiFuRuiHuiBao~}`