`3.`    Are they cooking?

`=>` No, they aren't

`=>` They are reading the newspaper.

`4.`   Are they skiing ?

`=>` No, they aren't

`=>` They are swimming.

`5.`   Are they dancing ?

`=>` Yes, they are

`=>` They are dancing

`6.` Is the bird flying ?

`=>` Yes, it is

`=>` It is flying

*Cấu trúc áp dụng cho bài này:

`=>` HTTD

`=>` Câu hỏi : Is + he/she/it + V-ing+O

                     Are + you/we/they + V-ing +O

                     Am + I + V-ing + O

       Trả lời  : Yes, he/she/it/we/they + is/are/am

                     No, he/she/it/we/they + is/are/am + not

<>tuyetnhi2010

<> God of destruction

Đáp án :

`3)`

(?) Are the men cooking?

- No, they aren't

- They are reading newspaper.

`4)`

(?) Are they skiing?

- No, they aren't.

- They are swimming.

`5)`

(?) Are the girls dancing?

- Yes, they are.

- They are dancing.

`6)`

(?) Are the bird flying?

- Yes, it is.

- The bird is flying.

Giải thích các bước giải :

Cấu trúc câu hỏi :

Tobe + S + $V_{-ing}$

Cấu trúc câu trả lời :

Yes,S + tobe

No,S + tobe + not

Cấu trúc câu hiện tại tiếp diễn :

S + tobe + $V_{-ing}$