Cấu trúc: (Câu chủ động) S+was/were+V-ing →→ S+was/were+being+p.p (Câu bị động)
1. Peter was riding a buffalo in the field at 4 p.m yesterday.
→ A buffalo was being ridden by Peter in the field at 4 p.m yesterday.
2. They were watching TV when I came.
→ TV was being watched by them when I came.
3. Students were cleaning the schoolyard very quickly.
→ Schoolyard was being cleaned very quickly by the students.
4. Were you having lunch when she came?
→ Was lunch being had when she came?
5. We were not helping the women when it started to rain.
→ When it started to rain, the women weren't being helped.
6. I was not teaching English when it started to rain.
→ English wasn't being taught by me when it started to rain.
7. People were not playing the cello at this time last year.
→ The cello wasn't being played at this time last year.
8. He was not using the computer at that time.
→ The computer wasn't being used by him at that time.
9. Duong was doing the projects this time last year.
→ The projects were being done by Duong this time last year.
10. Were people eating black pudding this time ten years ago?
→ Was black pudding being eaten this time ten years ago?