Dưới đây là các câu đã chuyển đổi mà không làm thay đổi nghĩa:

1. Sally went to work despite feeling ill. **It was good value for money, too.**
2. The police are investigating the cause of the explosion. **The cause of the explosion has been looked into by the police.**
3. The travel agent hasn’t called me yet. **I am still waiting for a call from the travel agent.**
4. Pete had to work very hard to pass the exam. **Only after a lot of effort did he pass the exam.**
5. I found it difficult to settle down to work. **I had trouble settling down to work.**
6. Because of the rain, not many people turned up at the picnic. **Only a small number turned up at the picnic because of the rain.**
7. Everyone thinks that Mike will win the race. **Mike is expected to win the race.**
8. You can surf the Net from here for nothing. **It won’t cost you anything to surf the Net from here.**
9. She promised to be back before noon. **She gave her word that she would be back before noon.**
10. It wasn’t necessary for me to buy milk as Amy had already bought some. **I didn’t need to buy milk as Amy had already bought some.**
11. The customer became extremely angry with the assistant after being kept waiting for hours. **The assistant had to temper the customer after being kept waiting for hours.**
12. The headteacher had the respect of everyone in the school. **Everyone in the school looked up to the headteacher.**
13. Mum let us stay out late last night. **We were allowed to stay out late last night.**
14. Could you give me your opinion on this matter? **What do you know about this matter?**