CAU DIEU KIEN

<span class='text_page_counter'>(1)</span>THE CONDITIONAL SENTENCES. IF CLAUSE. MAIN CLAUSE. True in the present future. IF + s + V 1/s,es. S + will / can / must + v0. Untrue in the present future. IF + s + V 2/ed (didn’t). S + would / could + V0. Untrue in the past. IF + s + had + V 3/ed. S + would have / couid have + V 3/ed. EXERCISE 1 I. Fill in the blanks: 1. If it had not rained, we (go)_______ camping. 2. If he (speak)_______ more slowly, I could have understood him. 3. What_______you (do)_______ if you were a mokey? 4. If he had listened carefully, he (perform)_______well in his examination. 5. If I find your book, I (give)_______ it to you. 6. If you came with us, you (have)_______ a good time. 7. If I (not/miss)_______ the bus, I could have come early. 8. If I took a trip this summer, I (go)_______ to DatLat. 9. If he (not/steal)_______ the wallet, he (not/be)_______ in prison now. 10. If they (invite)_______ yesterday, I (be)_______ is a good day tomorrow. 11. We (go)_______ swimming if it (be)_______ a good day tomorrow. 12. If the weather (be)_______ nice last day, I (go)_______ for a walk. 13. My dog always barks if he (hear)_______ anything unusual. 14. If he (not/ do)_______ come soon, I'm not going to wait. 15. If the phone (ring)_______, can you answer it? 16. If it rains this evening, I (not/will)_______ go out. 17. If she (come)_______, she will ghe a surprise. 18. If we had had enough money, we (buy)_______ that house. 19. If Caroline and Sue (prepare)……….the salad, Phil (decorate)…………… the house. 20. If you (send)……… ….. this letter now, she (receive) ……………..it tomorrow..

<span class='text_page_counter'>(2)</span> 21. If Sue (cut)….................... the onions for the salad, Caroline (peel)………the mushrooms. 22. If I (do) ………………………this test, I (improve)…………………………. my English. 23. Jane (hover)…… …. the sitting room if Aaron and if somebody Tim (move)...……. the furniture. 24. If I (find) ………………your ring, I (give)…………… it back to you. 25. Peggy (go)……………… shopping if she (have)……………… …. time in the afternoon. 26. If Bob (tidy)………………. up the kitchen, Anita (clean)…… ………. the toilet. 27. Elaine (buy)……………… the drinks (help)……………… her carry the bottles. 28. If Alan and Rebecca (organize) ....................… the food, Mary and Conor (make) ….........….the sandwiches. II. Multiple Choice 1. If I …………………a camera, I would have taken some pictures. a. have. b. had. c. would have. d. had had.. 2. If I ……….a lot of money now, I …………..a new car. a. have /will buy. b. have / would buy. c. had/ will buy. d. had/ would buy.. 3. If I ……………you, I …………….do that. a. am/ will. b. were /would. c. were/ will. d. had been/ would.. 4. If I were offered the job, I think I ………. it. a. take. b. will take. c. would take. d. would have taken.. 5. I would be very surprised if he…………….. a. refuses. b. refused. c. had refused. d. would refuse.. 6. Many people would be out of work if that factory………..down. a. closes. b. had closed. c. closed. d. would close.. 7. 6. If she sold her car, she ………… much money. a. gets. b. would get. c. will get. d. would have got.. 8. They would be disappointed if we……………. a. hadn’t come. b. wouldn’t come. c. don’t come d. didn’t come.. 9. Would John be angry if I ……. ……his bicycle without asking? a. take. b. took. c. had taken. d. would take.. 10. She ……….terrible upset if I lost this ring. a. will be. b. would be. c. were. d. had been.. 11. If someone…………in here with a gun, I would be very frightened. a. would walk b. walks. c. had walked. d. walked..

<span class='text_page_counter'>(3)</span> 12. What would happen if you ……………..to work tomorrow? a. don’t go. b. didn’t go. c. won’t go. d. wouldn’t go.. c. went. d. had gone.. 13. We ‘ll get wet if we ………….out. a. go. b. did go. 14. If I go shopping, I ………some food. a. buy. b. will buy. c. would buy d. would have bought.. 15. If I find it, I ………you. a. will tell. b. would tell. c. had told. d. told.. 16. What would you do if you……………a million dollars? a. would win. b. win. c. had won. d. won.. 17. They ‘d be hurt if I ………………. a. don’t go. b. didn’t go. c. hadn’t gone d. wouldn’t go.. 18. If we took the 6: 30 train, we…………too early. a. would have arrived. b. arrived. c. will arrived. d. would arrive.. 19. If I had known you were in hospital, I …………to see you. a. will go. b. would go. c. went. d. would have gone.. c. saw. d. would see.. 20. If I …………., I would have said hello. a. had seen. b. see. 21. I…………..out if I hadn’t been so tired. a. will go. b. went. c. would have gone. III. Rewrite the following sentences by using conditional sentences. 1. I'll buy a new hat. I'll give it to you. If______________________________. 2. Today isn't Sunnday. The pupils can't go swimming. If______________________________. 3. He wasn't here. He didn't have a lot of fun. If______________________________. 4. My brother will have anough money. He will buy a bicycle. If______________________________. 5. He didn't have time. He didn't read this novel. If______________________________. 6. Because she missed the bus, she was late. If______________________________.. d. would go..

<span class='text_page_counter'>(4)</span> 7. Peter doesn't study hard, so he can't get good marks. If______________________________. 8. My sister is absent from her class because she has a terrible headache. If______________________________. 9. Windy didn't come, so we cancelled the meeting. If______________________________. 10. He was angry, so he didn't say anything. If______________________________. EXERCISE 2 1. If I (know)..........................his telephone number. I’d give it to you. 2. He could get a job easily if he (have) ............................. a degree. 3. Henry talks to hisdog as if it (understand) .............................. him. 4. If she (not hurry) .........................., she may be late. 5. Water (not run) ..................................down hill if there were not gravity. 6. He looked tired as if he (work) ……….…………………......very hard. 7. If you (turn) ................................out the light, we shall be in the dark. 8. He might get fat if he (stop) ………………………………......smoking. 9. I (accept) ................................. if they invite me to the party. Rewriting Sentences 1. Alan always ate breakfast, he wouldnot overeat at lunch  If.......................................................................................................................................................... 2. The wind is blowing hard, so I won’t take the boat out for a ride.  If....................................................................................................................................................... 3. We don’t visit our parents very often because they live so far away  If.......................................................................................................................................................... 4. I can’t look the word up because I havenot got a dictionary.  If.......................................................................................................................................................... 5. Nick can’t find the way because he hasnot got a ma.

<span class='text_page_counter'>(5)</span>  If...................................................................................................................................................... EXERCISE 3. I. Fill in the blanks: 1.If I had known that you were in hospital I (visit) ……………………….you 2.He (look)………………………………. a lot better if he shaved more often 3.If you (speak)……………………………. more slowly he might have understood you 4.If you (change) ……………………………….your job would it affect your pension? 5.If you (not like)………………………………………. that one I will bring you another 6.The hens (not get)………………………………. into the house if you had shut the door 7.She won’t open the door unless she (know)……………………………………. who it is 8.If we (have)…………………………………………. a map, we wouldn’t have got lost 9.If he had known the whole story he (not be)………………………………….. so angry 10. You would have seen my garden at its best if you (be)…………………. here last week 11. If I see him, I (give)............................................... him a lift 12. The police (arrest)........................................... him if they catch him 13. If he (eat)........................................... all that he’ll be ill 14. Unless I have a quiet room I (not be able)........................................... to do any work 15. If you (not go)........................................... away I’ll send for the police 16. If I lend you £ 10 when you (repay)........................................... me ? 17. Unless you are more careful, you (have)........................................... an accident 18. Ice (turn) ...........................................to water if you heat it 19. He’ll be late for the train if he (not start) ...........................................at once 20. Someone (steal)........................................... your car if you leave it unlock 21. Tell him to ring me if you (see)........................................... him 22. If I were sent to prison you (visit)........................................... me ? 23. He might get fat if he (stop)........................................... smoking 24. Unless he (sell) ...........................................more he won’t get much commission 25. If we had more rain our crops (grow)........................................... faster 26. If everybody (give)........................................... £ 1 we would have enough 27. If you come late they (not let)........................................... you in 28. I shouldn’t drink that if I (be) ...........................................you 29. What you (do)........................................... if you found a burglar in your house ? 30. If he (wash)........................................... my car I will give him £ 10 31. If I had known that you were in hospital I (visit) ...........................................you 32. He (look)........................................... a lot better if he shaved more often 33. If you (speak)........................................... more slowly he might have understood you 34. If you (change)........................................... your job would it affect your pension? 35. If you (not like)........................................... that one I will bring you another 36. The hens (not get)........................................... into the house if you had shut the door 37. She won’t open the door unless she (know)........................................... who it is 38. If we (have)........................................... a map, we wouldn’t have got lost 39. If he had known the whole story he (not be) ...........................................so angry 40. You would have seen my garden at its best if you (be)........................................... here last week 41. If you pass your examination we (have) ...........................................a celebration 42. If you (wear)........................................... a false beard nobody would have recognized you 43. You would study better if you (not talk)........................................... so much 44. The flight may be cancelled if the fog (get) ...........................................thick 45. What (happen)........................................... if I press that button ?.

<span class='text_page_counter'>(6)</span> 46. If I had realized that the traffic lights were red I (stop)........................................... 47. He (not come)........................................... if he knew that it was dangerous 48. If I (know) ...........................................that you were coming I’d have baked a cake 49. I’ll be very angry if he (make)........................................... any more mistakes 50. I (take)........................................... a taxi if I had realized that it was such a long way 51. If I (have)........................................... a lot of money, I would travel round the world 52. If it (not/ be)........................................... cold yesterday, I would have gone swimming 53. We would go to the beach if the weather (be)........................................... nice 54. If I had taken his advice, I (not / be) ...........................................in trouble 55. If he (be) ...........................................here now, he would give you a han 56. If she (not/ feel) ...........................................so tired, she would come out with you 57. If you had seen the film, you (enjoy) ...........................................it 58. If I (know)........................................... , I would help you 59. If I (have) a day off tomorrow, I (go)........................................... to the beach 60. If Mike hadn’t been so careless, he (not / lose)........................................... his job. Viết lại các câu sau , không làm thay đổi ý nghĩa của câu 1. He doesn’t have the money, he can’t afford a new car. If ……………………………………………………………………………………… 2. Without a passport, she couldn’t have left the country. If ……………………………………………………………………………………… 3. She didn’t take your advice, so she failed in the exam. If ……………………………………………………………………………………………… 4. But for his help, I would have gone bankrup If ……………………………………………………………………………………… 5. She wasn’t injured in the crash. She was wearing a sea-belt She ……………………………………………………………………………………… 6. Tom didn’t do his test well because he didn’t study his lesson carefully Tom ……………………………………………………………………………………… 7. You have to hurry, otherwise you’ll be late for school If …………………………………………………………………………………………… 8. Without the sun, there would be no kinds of energy If ……………………………………………………………………………………………… 9. We got lost because we didn’t have a map If ………………………………………………………………………………………… 10 We can’t have lunch in the garden because it’s raining If ………………………………………………………………………………………… 11She came early so she got a good seat If …………………………………………………………………………………………… 12. He’s fat because he doesn’t take any physical exercises If …………………………………………………………………………………………… 13. I’m not going to buy that book. It is too expensive If ……………………………………………………………………………………………… 14. I can’t meet you tomorrow evening. I have to work If ……………………………………………………………………………………………… 15. The reason I went was because Stephen was there If …………………………………………………………………………………… 16. Would you like me to move my car ? If ………………………………………………………………………………………….

<span class='text_page_counter'>(7)</span> 17. The taxi went the wrong way so Kate missed her flight If ……………………………………………………………………………………………… 18. I often the floor slowly. Otherwise. I could have hit someone If ……………………………………………………………………………………………… 19. You don’t do any exercise and that why you put on weight If ……………………………………………………………………………………………… 20. I didn’t know you were back from holiday, so I didn’t phone If …………………………………………………………………………………………… Viết lại các câu sau , không làm thay đổi ý nghĩa của câu 1. He doesn’t have the money, he can’t afford a new car. If ……………………………………………………………………………………………… 2. Without a passport, she couldn’t have left the country. If …………………………………………………………………………………………… 3. She didn’t take your advice, so she failed in the exam. If …………………………………………………………………………………………… 4. But for his help, I would have gone bankrup If ………………………………………………………………………………………………… 5. She wasn’t injured in the crash. She was wearing a sea-belt She …………………………………………………………………………………………… 6. Tom didn’t do his test well because he didn’t study his lesson carefully Tom ………………………………………………………………………………………… 7. You have to hurry, otherwise you’ll be late for school If …………………………………………………………………………………………… 8. Without the sun, there would be no kinds of energy If …………………………………………………………………………………………… 9. We got lost because we didn’t have a map If ……………………………………………………………………………………………… 10. We can’t have lunch in the garden because it’s raining If ………………………………………………………………………… 11. She came early so she got a good seat If …………………………………………………………………………………………… 12. He’s fat because he doesn’t take any physical exercises If ………………………………………………………………………………………………… 13. I’m not going to buy that book. It is too expensive If …………………………………………………………………………………………… 14. I can’t meet you tomorrow evening. I have to work If ………………………………………………………………………………………………… 15. The reason I went was because Stephen was there If ……………………………………………………………………………………………… 16. Would you like me to move my car ? If …………………………………………………………………………………………… 17. The taxi went the wrong way so Kate missed her flight If ……………………………………………………………………………………………… 18. I often the floor slowly. Otherwise. I could have hit someone If …………………………………………………………………………………………… 19. You don’t do any exercise and that why you put on weight If …………………………………………………………………………………………… 20. I didn’t know you were back from holiday, so I didn’t phone.

<span class='text_page_counter'>(8)</span> If ……………………………………………………………………………………………… 21. You’ll burn in this heat unless you put sun cream on If ………………………………………………………………………………………………… 22. You should book your seats soon otherwise they’ll all be sold out If ……………………………………………………………………………………………… 23. If the firemen don’t get here soon, there won’t be a house to save Unless……………………………………………………………………………………… 24. Without your help , I couldn’t have done it If ……………………………………………………………………………………………… 25. She won’t pass the examination unless she studies hard If ……………………………………………………………………………………………… 26. Unless she had had inside help, she couldn’t have stolen the jewels If ………………………………………………………………………………………… 27. Unless somebody brings him to hospital, he’ll die If………………………………………………………………………………………… 28. We can’t write to Tom unless he sends us his address If …………………………………………………………………………………………… 29. If you don’t change your mind, I won’t be able to help you Unless……………………………………………………………………………………… Viết lại các câu sau, sử dụng câu điều kiện 1. He doesn’t have the money, he can’t afford a new car ……………………………………………………………………………………… 2. Without a passport, she couldn’t have left the country ……………………………………………………………………………………… 3. She didn’t take your advice, so she failed the exam ……………………………………………………………………………………… 4. He is fat because he doesn’t take any physical exercises. ……………………………………………………………………………………… 5. Maybe it ‘ll rain tomorrow, I will stay home. ……………………………………………………………………………………… 6. She came early , so she got a good seat. ……………………………………………………………………………………… 7. Without the sun, there would be no kinds of energy. ……………………………………………………………………………………… 8. Tom didn’t do his test well because he didn’t study his lesson carefully. ……………………………………………………………………………………… 9. Today isn’t Sunday, we can’t go swimming. ……………………………………………………………………………………… 10. We got lost because we didn’t have a map. ……………………………………………………………………………………….

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