Mệnh đề chỉ điều kiện
EXERCISES
I. Supply correct verb forms of the following Conditional sentences.
1. If you (heat) water to 100°c, it (turn) to steam.
2. If you (eat) this poisonous fruit, you (die) at once.
3. If history (teach) in the form of stories, it (never, forget).
4. I (go) out of the room if my mobile (ring).
5. If you could read people’s minds, you (know) what they were thinking about.
6. It rains rather little this year. Ifwe (have) more rain, our crops (be) better.
7. If the Earth suddenly (stop) spinning, what (happen) ?
8. If you (tell) me about the skiing trip, I (be) there with you now.
9. Unless she (fail) the test she (get) her driving licence next week.
10. If I tell you a secret, you (promise) not to tell it to anyone else?
11. If you (want) to get started on one or more supplements, you should íìrst talk to your doctor.
12. But for the children, they (get) a divorce long ago.
13. Fortunately, the flood stopped. The crops (min) if the flood (rise) higher.
14. If I (have) to choose one regỉon of the world for my travelling, it would have to be Southeast Asia.
15. If the world (turn) into a global economy, a person (need) to be able to get along and work with people from different cultural background.
16. If you (feel) neglected or mistreated by a friend, you (need) to look more closely at this relationship.
17. They didn t win the football game. They (win) iftheir best player (be) there.
18. Had he let me know, I (collect) him at the airport.
19. As usual, ifthe bird (be) disturbed, it (abandon) the nest, leaving the chicks to die.
20. The chicken wasn’t good. It (taste) better if you (put) some spices on it.
II. Use UNLESS instead of IF.
1. You will be sick if you don’t stop eating.
2. If we miss the last bus, we will have to walk home.
3. Water would not run downhill if there were not gravity.
4. If you had not sneezed, he wouldn’t have known that we were there.
5. I wouldn’t have believed it if I had not seen it with my own eyes.
6. If you are not attentive to details you may choose incorrect answers.
7. He’ll fail his exam if he doesn’t study.
8. If it doesn’t rain this August, there will be water shortages.
9. You will lose your job if you don’t change your attitude and become friendlier.
10. Global warming will not slow down if governments do not take serious action soon.
11. Ifthere are not (Merences in conversational styles, people will not misunderstand.
12. I would never have sold that painting if they had not paid me 1,000 dollars.
13. If you do not start saving money now, you won’t be able to buy a Computer next school year.
14. Much of the food we eat would not actually last that long if it were not for the chemicals they contain.
15. She wouldn’t save any money if she didn’t want to buy a house of her own.
16. I wouldn’t have asked him any questions if he hadn’t been ready to answer them.
17. Ifyou do not make the payment in time, your car will be confiscated.
18. If oil hadn’t been discovered, we would have found another way to obtain our energy.
19. If a person never spend time living in diữerent parts of the world, he will find it diíĩìcult to adopt cultural diversity.
20. In the old days people never travelled if they didn’t really have to.
21. Make Conditional sentences according to the facts provided.
22. Keep silent or you’ll wake the baby up.
23. Because you don’t leave immediately, I call a policeman.
24. I don’t know her number, so I don’t ring her up.
25. Go right now or you’ll be late for the train.
26. As she is often absent from class, she can’t keep pace with her classmates.
27. I couldn’t write to Alice because I didn’t know her address.
28. I don’t know the answer, so I can’t tell you.
29. We got lost because we didn’t have a map.
30. His friends were so late, so they missed the train.
31. Today isn’t Sunday, so the pupils can’t go swimming.
32. The heavy rain kept everybody from going out.
33. This chair is too heavy for him to move.
34. He had a flu because he went out in the rain last night.
35. The church bells keep me from sleeping.
36. Morning exercises make us feel better.
37. Stop talking or you won’t understand the lesson.
38. The boy is so young that he can’t go to school.
39. The fridge keeps the food from spoiling.
40. Why don’t you study hard? /
41. Why don’t you stop smoking?
42. Be careful, or you’ll cut yourselíwith that knife.
43. Be calrn, or you’ll make a wrong decision.
44. Without the air, we would die.
45. Without a Visa, she couldn’t have come to that country.
46. Without the sun, man would live in the darkness.
47. Without money, he wouldn’t have bought such a big house.
48. Smoking makes him so weak.
49. It was very cold yesterday, so we couldn’t go swimming.
50. It is very cold, so we can’t go swimming.
51. I didn’t watch T.v last night because I was busy.
III. Supply correct verb forms in the following paragraph.
If 11.____ (be) a world leader, I would try to stop the destruction of the earth and I 2. (make)____ the world a better place for people. If the world’s problems 3.____(solve) sooner, the quality of human life 4____ (improve) long ago. First of all, I would try to bring about peace in the world. As long as there is tights between nations, millions of people 5.____ (continue)to suíĩer and die. If wars continue, children 6. ____(leave) without parents and 7. ___(grow) up in a world of misery and fear. But as long as people disagree over land and possessions, the fighting____(go) on. Thereíore, I would ensure that all people were treated equally, and given the same opportunities in life. If all countries 9. (stop)____producing arms
so there 10. (not/be)____ the weapons for Aghting. In addition, 11. (introduce)_____laws to reduce pollution. If pollution levels 12. (control) earlier years ago, life 13. ____(not/become) so unbearable now. If 14. (have)____ the power, 15. (ban) ____all cars from City centers, and increase public transport. If there were more trees, the air we breathe 16. (be)____cleaner. Unless measures are taken soon, it 17. (be)____too late both for ourselves and our children.
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