đề : Change these sentences in to interrogative form and answer Yes or No. : chuyển sang dạng câu nghi vấn và trl yes hoặc no 

cách trl câu hỏi : yes + S + be / No + S + be not 

1 is he watching TV now ? yes he is / no he isn't

thì HTTD dạng nghi vấn : be + S + v-ing

2 is she reading a book ? yes she is / no she isn't

thì HTTD dạng nghi vấn : be + S + v-ing

3 is nam playing football now ? yes he is / no he isn't

thì HTTD dạng nghi vấn : be + S + v-ing

4 are nam and ba going to school ? yes they are / no they aren't

thì HTTD dạng nghi vấn : be + S + v-ing

5 is tuan listening to music ? yes he is / no he isn't 

thì HTTD dạng nghi vấn : be + S + v-ing

6 is your father working ? yes he is / no he isn't

thì HTTD dạng nghi vấn : be + S + v-ing

7 are you doing your homework ? yes i am / no i ain't

thì HTTD dạng nghi vấn : be + S + v-ing

8 are they playing chess at the moment ? no they aren't / yes they are

thì HTTD dạng nghi vấn : be + S + v-ing

Dạng nghi vấn của thì hiện tại tiếp diễn:

Is/am/are + S + V-ing?

(+) Yes, S + is/am/are

(-) No, S + is/am/are + not

`->`

1. Is he watching TV now?

Yes, he is/ No, he isn't

2. Is she reading a book?

Yes, she is/No, she isn't

3. Is Nam playing football now?

Yes, he is/No, he isn't

4. Are Ba and Nam going to school?

Yes, they are/No, they aren't

5. Is Tuan listening to music?

Yes, he is/No, he isn't

6. Is your father working?

Yes, he is/No, he isn't

7. Are you doing your homework?

Yes, I am/No, I am not

8. Are they playing chess at the moment?

Yes, they are/No, they aren't

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