EX 5. Sử dụng cấu trúc câu với IF và UNLESS để viết lại các câu sau sao cho nghĩa
không thay đổi.
1. If you don't study harder, you 'll get bad marks.
=> Unless …………………………………………………………………………………
2.Unless this man is a driver, he can’t help you move by car.=> If …………………………………………………………..………………………….
3. If he doesn't practice writing every day, he can't improve his writing skill.
=> Unless …………………………………………………………………………………
4. Unless you return this book to the library today, you’ll have to pay a fine.
=> If ………………………………………………………………………………………
5. Unless you go out more often, you might fall ill.
=> If ………………………………………………………………………………………
6. If you are absent from school, you have to write a sick-note.
=> Unless …………………………………………………………………………………
7. Unless the seas is warmer, the ice at the North and South pole will not melt.
=> If ………………………………………………………………………………………
EX 6. Write the conditional sentences from the following statements.
1. We will plant more trees. The air will be fresher.
=> If __________________________________________________________
2. We will use fewer cars. We will reduce pollution.
=> If __________________________________________________________
3. We will cycle to school every day. We will keep fitter.
=> If __________________________________________________________
4. We will use recycled products. We will save money.
=> If __________________________________________________________
5. People will throw rubbish into the right bin. They will keep the environment clean.
=> If __________________________________________________________
6. We will turn off the tap when brushing the teeth. We will save a lot of water.
=> If __________________________________________________________
7. People will travel more by public transport. The harmful gases in big cities will be reduced.
=> If __________________________________________________________
8. We will start at six. We will arrive there before noon.
=> If __________________________________________________________
9. The boy eats so may green apples. He will be ill.
=> If __________________________________________________________