1. The grass isn't cut everyday.

2. Chinese wasn't learnt yesterday.

3. A new song is being sung now.

4. A letter isn't being sent.

5. Is he believed ?

6. Many cakes were eaten last night.

7. The yard is being cleaned now.

8. The clothes are being washed.

CT bị động :
Bị động ở thì hiện tại đơn : S + tobe + V(PII) + place + (by + O) + time. : ?) Tobe + S + V(PII) + place + (by + O) + time ? 

Bị động ở thì quá khứ đơn : S + was/were + V(PII) + place + (by + O) + time.

Bị động ở thì hiện tại tiếp diễn : S + tobe + being + V(PII) + place + (by + O) + time.

`Azzuri#`

1.The grass is not cut by me everyday.

Bị động HTĐ

2.Chinese wasn’t learnt by him yesterday.

Bị động QKĐ

3.A new song is being sung by him now.

Bị động HTTD

4.A letter isn’t being sent by us.

Bị động HTTD

5.Is he believed by you?

Bị động HTĐ

6.Many cakes were eaten by us last nigh.

Bị động QKĐ

7.The yard is being cleaned by us now.

Bị động HTTD

8.The clothes are being washed by him.

Bị động HTTD