Exercise 5: Change these sentences into passive voice.
1. Their work will be finished next week.
- Câu bị động thì tương lai đơn: S + will + be + V (PII) + (by O).
2. Considerable damage has been caused by the fire.
- Câu bị động thì hiện tại hoàn thành: S + have/has + been + V (PII) + (by O).
3. The suspects were being followed by the police.
- Câu bị động thì quá khứ tiếp diễn: S + was/were + being + V (PII) + (by O).
4. A big surprise is going to be given to David.
- Câu bị động thì hiện tại tiếp diễn: S + am/is/are + being + V (PII) + (by O).
5. Dynamite is thought to have been invented by Alfred Nobel.
6. You ought to get your hair cut.
7. Let the silence be kept.
8. Let your book opened.
- Your book should be opened.
- Your book must be opened.
9. He was made to work all day.
- Câu bị động thì quá khứ đơn: S + was/were + V (PII) + (by O).
10. Drivers are advised to use an alternative route by the police.
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