Ex: Rewrite these sentences by using conditional sentence Type I 1. Turn off all the lights and you will not pay more money If you turn off all the lights, you will not pay more money 2. Unless she wears warm clothes, she will have a cold. If 3. Be careful or you may have an accident. If 4. phone your parents or you have a trouble. If 5. Unless she whispers, everyone knows what she is saying. If 6. Stay here and you will feel save. If 7. Pay electricity bill today or your electricity will be cut off. If .......................................................................................................... 8. Stop smoking otherwise your cough may be worse. If .......................................................................................................... 9. Unless we use less fossil fuel, they will be run out soon. If .......................................................................................................... 10. Unless it stops raining today, we may be faced with a serious flood. If .......................................................................................................... 11.Do morning exercises regularly, your body will be fitter. If .......................................................................................................... 12. Unless we renewable energy, we will have nothing for the future generation. If .......................................................................................................... 13. The climate will change unless we reduce the use of non-renewable energy. If .......................................................................................................... 14. Lock all the doors and noone can break into your house. If .......................................................................................................... 15. Unless we continue hunting polar bears, they will become extinct in near future. If .......................................................................................................... Ex: Chuyển các câu sau sang đảo ngữ: 1. If it is warm tomorrow, we will have a picnic Should ............................................................................................... 2. If your cold becomes worse, you must see the doctor Should ............................................................................................... 3. Take part in the English club and your speaking skill will be improved Should ............................................................................................... 4. Keep your feet dry or you will have a cold. Should ....................................................................................... 5. If you want to go out tonight, make up your room. Should ............................................................................................... 6. I'll be very angry if he makes more mistakes. Should ............................................................................................... 7. If you leave your house unlocked, It will be broken into Should ............................................................................................... 8. If she forget her book, she can share with me. Should ........................................................................ 9. Turn down the radio or you will wake the baby up Should ............................................................................................... 10. If you are asked to sing an english song, what will you do? Should ............................................................................................... 11. will you phone the police first if someone breaks into your house? Should ............................................................................................... 12. If he asks to bring hot water, tell him to wait for five munites. Should ..............................................................................................