Dưới đây là các câu được chuyển đổi với cấu trúc câu điều kiện "if" và "unless":

1. You may want a chat, **if** you give me a ring.
2. I didn’t finish my report yesterday; **unless** I finish it, I can’t begin a new project today.
3. The wind is blowing hard, **if** it doesn’t stop, I won’t take the boat out for a ride.
4. I’m sorry I disturbed you. **If** I had known you were busy, I wouldn’t have interrupted.
5. It might rain. **Unless** it doesn’t, everyone can eat inside.
6. We don’t visit you very often **unless** you live so far away.
7. Margaret wasn’t injured in the crash **if** she was wearing a seat belt.
8. I have to work tomorrow evening; **if** I didn’t, I could meet you.
9. I don’t know anything about plumbing. **If** I knew, I would fix the leak in the sink myself.
10. Is Matthew going to enter the race? **Unless** he enters, he’ll probably win it.
11. We should have bought that picture five years ago **if** it had been available, because it would be quite valuable now.
12. I feel better now because you talked to me about my problems last night; **if** you hadn’t, I might still be worried.
13. Carol didn’t answer the phone **unless** she was studying.
14. Get out of my house, **unless** you can call the police.
15. We always ate at that restaurant **if** we visited our grandparents.
16. This area has been hit by three successive storms; **unless** it improves, the damages are horrible now.

Nếu bạn cần thêm thông tin hoặc có yêu cầu khác, hãy cho tôi biết nhé!