Bài tập câu điều kiện

I Put the verbs in the brackets into the correct tenses If I see him, I (give) him a gift If I had a typewriter, I (type) it myself If I had known that you were in hospital, I (visit) you You could make better progress if you (attend) _ class regularly If I (know) his telephone number, I’d give it to you If you (arrive) ten minutes earlier, you would have got a seat He could get a job easily if he (have) _ a degree I shouldn’t have believed it if I (not see) _ it with my own eyes 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 If you are not careful You will cut yourself with that knife  If you not like this one, I’ll bring you another  I’ll not be able to any work if I not habe a quiet room  If she does not hurry, she’ll be late  If we had more rain, our crops would be better  The crops would have been ruined if the flood had risen higher  If you had not sneeze, he wouldn’t known that we were there  If she did her hair differently, she would look quite nice  If John had played for our football team, we would not have lost the game  10 If I won a big prize in a lottery, I’d give up my job  III Make conditional sentences without conjunction If I were you, I’d accept the job  If you had told me that he never paid his debts, I wouldn’t have let him money  If he had known your telephone number, he would have rung you  If it were nice, we would go for a walk  I would come to her wedding if I were invited  Would you visit me if I were sent to prison?  Would you have written to her if you had known her address?  What would you if today were a holiday?  If they had asked me I would have helped them  10 Scientists think that men could live on the moon if there were air and water on it  IV Complete the following sentences If I were the Prime Minister, I _ He could buy a new car if _ If I had more time, If he hadn’t been ill, They could have passed the exam if they We could have come with you if we _ If her parents had been richer, _ If he had come yesterday, _ If it hadn’t rained, 10 The world would be a better place if _ V Make conditional sentences according to the facts provided Keep silent or you’ll wake the baby up  Because you don’t leave immediately, I call a policeman  I don’t know her number, so I don’t ring her up  Go right now or you’ll be late for the train  As she is often absent from class, she can’t keep pace with her classmates  I couldn’t write to Alice because I didn’t know her address  I don’t know the answer, so I can’t tell you  We got lost because we didn’t have a map  His friends were so late, so they missed the train  10 Today isn’t Sunday, so the pupils can’t go swimming  11 The heavy rain kept everybody from going out  12 This chair is too heavy for him to move  13 He had a flu because he went out in the rain last night  14 The church bells keep me from sleeping  15 Morning exercises make me feel better  16 Stop talking or you won’t understand the lesson  17 The boy is so young that he can’t go to school  18 The fridge keeps the food from spoiling  19 Why don’t you study hard?  20 Why don’t you stop smoking?  21 Be careful, or you’ll cu yourself with that knife  22 Be calm, or you’ll make a wrong decision  23 Without the air, we would die  24 Without a visa, she couldn’t have come to that country  25 Without the sun, man would live in the darkness  26 Without money, he wouldn’t have bought such a big house  27 Smoking makes him so weak  28 It was very cold yesterday, so we couldn’t go swimming  29 It is very cold, so we can’t go swimming  30 I didn’t watch TV last nigh because I was busy 