1. Somebody has taken my briefcase.
→My briefcase has been taken by somebody.
2. The teacher returned our written work to us.
→Our written work was returned to us by the teacher.
3. She has finished her report by soon.

→Her report has been finished by her soon.

4. The teacher made the children do exercise
→The children were made do excercise by the teacher.

5.The police have arrested five suspects.
→Five suspects have been arrested by the police
6. The doctor ordered him to take a long rest
→He was ordered to take a long rest by the doctor.
7 They repaired the house last week.
→The house was repaired by them last week.
8. He gave me some flowers
→Some flowers were given to me by him.

→I was given some flowers by him.
9. They didn't allow Tom to take these books home.
→Tom wasn't allowed to take these books home by them. 
10. The teacher corrected exercises yesterday.
→Exercise were corrected by the teacher yesterday.

11. Marry has operated Tom since 10 o'clock,
→Tom has been operated by Marry since 10 o'clock
12. They make me return home.

→I am made return home by them.

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Cấu trúc câu bị động (trong bài này):

·Hiện tại đơn: S + be + V3 (+ by Sb/ O)

·Hiện tại hoàn thành: S + have/ has + been + V3 (+ by Sb/ O)

·Quá khứ đơn: S + was/ were + V3 (+ by Sb/ O)

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