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.