1. It isn't necessary for you to finish by Saturday.
- You don't have to finish by Saturday.
- Giải thích: Cấu trúc "It isn't necessary for someone to do something" tương đương với "Someone doesn't have to do something".
2. Don't drive so fast!
- I'd like you to drive more slowly.
- Giải thích: Câu này chuyển từ câu mệnh lệnh sang câu yêu cầu lịch sự hơn.
3. It isn't necessary for you to shout.
- You needn't shout.
- Giải thích: Tương tự câu 1, chỉ thay đổi một chút về từ vựng.
4. It is necessary for us to study hard now.
- You must study hard now.
- Giải thích: "It is necessary for someone to do something" tương đương với "Someone must do something".
5. You don't need to wash my car today.
- It is not necessary for you to wash my car today.
- Giải thích: Đảo ngược cấu trúc câu so với câu gốc.
6. She isn't a manager.
- I wish she were a manager.
- Giải thích: Đây là câu ước, diễn tả mong muốn một điều trái với hiện thực.
7. He said to her, 'I'll take you home.'
- He told her that he would take her home.
- Giải thích: Chuyển từ câu trực tiếp sang câu gián tiếp.
8. The book was so good that I couldn't put it down.
- It was such a good book that I couldn't put it down.
- Giải thích: Sử dụng cấu trúc "such + a/an + adj + noun + that" để nhấn mạnh mức độ.
9. The coffee was too hot for me to drink.
- The coffee was so hot that I couldn't drink it.
- Giải thích: Tương tự câu 8.
10. Jane is a better cook than Daisy.
- Daisy cooks worse than Jane.
- Giải thích: So sánh ngược lại.
11. It's a pity that you wrote that letter.
- I'd rather you hadn't written that letter.
- Giải thích: Diễn tả sự tiếc nuối về một hành động trong quá khứ.
12. Someone stole his bike yesterday.
- He had his bike stolen yesterday.
- Giải thích: Sử dụng cấu trúc bị động để nhấn mạnh việc bị tác động.
13. He will do this problem tomorrow.
- This problem will be done by him tomorrow.
- Giải thích: Chuyển sang câu bị động.
14. He will have to do this problem tomorrow.
- This problem will have to be done by him tomorrow.
- Giải thích: Tương tự câu 13.
15. Whose car is it?
- Who does this car belong to?
- Giải thích: Cách khác để hỏi về chủ sở hữu.
16. Because of the rough sea, the ferry couldn't sail.
- The rough sea prevented the ferry from sailing.
- Giải thích: Sử dụng cấu trúc "prevent someone/something from doing something".
17. I fell asleep because the film was boring.
- Because the film was boring, I fell asleep.
- Giải thích: Đảo ngược vị trí của mệnh đề nguyên nhân.
18. We feel tired because of the bad weather.
- Because the weather is bad, we feel tired.
- Giải thích: Tương tự câu 17.
19. Her parents were sad because she was lazy.
- Because of her laziness, her parents were sad.
- Giải thích: Sử dụng cấu trúc "because of" để chỉ nguyên nhân.
20. We admired him because he was brave.
- Because of his bravery, we admired him.
- Giải thích: Tương tự câu 19.