Bài tập câu điều kiện (1)

I. Put the verbs in the brackets into the correct tenses.
1. If I see him, I (give) ________________ him a gift
2. If I had a typewriter, I (type) ________ it myself
3. If I had known that you were in hospital, I (visit) __________ you
4. You could make better progress if you (attend) _____________ class regularly.
5. If I (know) ______________ his telephone number, I’d give it to you
6. If you (arrive) ______________ ten minutes earlier, you would have got a seat.
7. He could get a job easily if he (have) _____________ a degree
8. I shouldn’t have believed it if I (not see) _________________ it with my own eyes.
9. If he (study) ________________ hard, he can pass the exam.
10. If she had asked you, you (accept) ______________?
11. Rice plants (grow) _____________ well if there is enough rain.
12. He might get fat if he (stop) ___________ smoking.
13. What you (do) ____________ if you found a burglar in your house?
14. If she (not hurry)________________, she may be late.
15. If I (try) ____________ again, I think that I would have succeeded
16. Water (not run) ______________ downhill if there were not gravity.
17. If I tell you a secret, you (promise) ______________ not to tell it to anyone else?
18. Tell him to ring me if you (see) ___________ him.
19. The police (arrest) ___________ him if they catch him.
20. If you (speak) _________ more slowly, he might have understood you.

II. Use Unless instead of If
1. If you are not careful. You will cut yourself with that knife.
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2. If you do not like this one, I’ll bring you another.
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3. I’ll not be able to do any work if I do not habe a quiet room
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4. If she does not hurry, she’ll be late.
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5. If we had more rain, our crops would be better.
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6. The crops would have been ruined if the flood had risen higher.
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7. If you had not sneeze, he wouldn’t known that we were there.
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8. If she did her hair differently, she would look quite nice.
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9. If John had played for our football team, we would not have lost the game.
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10. If I won a big prize in a lottery, I’d give up my job.
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III. Make conditional sentences without conjunction
1. If I were you, I’d accept the job.
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2. If you had told me that he never paid his debts, I wouldn’t have let him money.
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3. If he had known your telephone number, he would have rung you.
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4. If it were nice, we would go for a walk
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5. I would come to her wedding if I were invited.


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6. Would you visit me if I were sent to prison?
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7. Would you have written to her if you had known her address?
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8. What would you do if today were a holiday?
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9. If they had asked me I would have helped them.
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10. Scientists think that men could live on the moon if there were air and water on it.
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IV. Complete the following sentences.
1. If I were the Prime Minister, I _________________
2. He could buy a new car if _________________
3. If I had more time, __________________
4. If he hadn’t been ill, ______________________
5. They could have passed the exam if they ________________
6. We could have come with you if we _____________
7. If her parents had been richer, _____________
8. If he had come yesterday, ___________
9. If it hadn’t rained, ____________________
10. The world would be a better place if ___________________

V. Make conditional sentences according to the facts provided.
1. Keep silent or you’ll wake the baby up.
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2. Because you don’t leave immediately, I call a policeman.
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3. I don’t know her number, so I don’t ring her up.
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4. Go right now or you’ll be late for the train.
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5. As she is often absent from class, she can’t keep pace with her classmates.
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6. I couldn’t write to Alice because I didn’t know her address.
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7. I don’t know the answer, so I can’t tell you.
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8. We got lost because we didn’t have a map.
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9. His friends were so late, so they missed the train.
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10. Today isn’t Sunday, so the pupils can’t go swimming.
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11. The heavy rain kept everybody from going out.
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12. This chair is too heavy for him to move.
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13. He had a flu because he went out in the rain last night.
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14. The church bells keep me from sleeping.
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15. Morning exercises make me feel better.


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16. Stop talking or you won’t understand the lesson.
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17. The boy is so young that he can’t go to school.
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18. The fridge keeps the food from spoiling.
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19. Why don’t you study hard?
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20. Why don’t you stop smoking?
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21. Be careful, or you’ll cu yourself with that knife.
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22. Be calm, or you’ll make a wrong decision.
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23. Without the air, we would die.
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24. Without a visa, she couldn’t have come to that country.
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25. Without the sun, man would live in the darkness.
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26. Without money, he wouldn’t have bought such a big house.
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27. Smoking makes him so weak.
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28. It was very cold yesterday, so we couldn’t go swimming.
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29. It is very cold, so we can’t go swimming.
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30. I didn’t watch TV last nigh because I was busy.
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