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Exercise 6 : Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she 2.If you_____to me, you wouldn’t have got so much trouble. A. listened B. would listen C. had listened D. Would have listened 3.If you don’t know how to spell a word, you_____ look it up in the dictionary. A. must B. will C. should D. ought 4.If the sun _____, we _____for a walk. A. shines / will go B. shone / will go C. shone / would go D. had shone / would go 5.The campfire _____ if it _____ last night. A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains 6.But for our parents, we _____ successful in life. A. will never be B. would never be C. wouldn’t have be D. would have never been 7.If I _____ my wallet at home this morning, I _____ money for lunch now. A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had 8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do. A. were / would know B. is / will know C. had been / would have known D. was / would know 9.If we _____ the plans carefully, we would not have had so many serious mistakes. A. study B. had studied C. studied D. were studying 10.I will never talk to you again _____ you apologize me _____ your being rude. A. if / for B. unless / for C. or / of D. whether / or 11._____if you work harder, you will be sacked. A. Whether B. If C. However D. Unless 12.I think you should stop smoking. A. If I am you, I will stop smoking. B. If I were you, I will stop smoking. C. If I were you, I would stop smoking. D. If I had been you, I would stop smoking. 13.If you take the ice out of the fridge, it _____. A. vaporizes B. melts C. heats D. disappears 14.We should do something to protect water from being polluted _____we will have nothing to drink in the future. A. if B. whether C. or D. unless 15.Let’s knock on their door to see _____home. A. if they’re B. unless they’re C. whether they were D. if they were 16.Unless we _____more snow, we can’t go skiing. A. will have B. have C. have had D. had 17.You’ll fail the exam _____ you start revising. A. if B. until C. when D. unless 18.Unless you wash the car, you _____not drive it at the weekend. A. would B. could C. have to D. may 19.If Peter _____his car before the drive, he _____the problem of out of petrol. A. checked / will not get B. had checked / would not have got C. checks / will not have got D. would be checking / will not have got 20.He stepped on the mine, and it exploded. A.If he doesn’t step on the mine, it doesn’t explode. B.If he doesn’t step on the mine, it won’t explode. C.If he didn’t step on the mine, it wouldn’t explode. D.If he hadn’t stepped on the mine, it wouldn’t have exploded. 21. In my experiments, the liquid is cooled to 32ºF. It always freezes. A.If you cool the liquid to 32 degrees, it froze. B.If you cooled the liquid to 32 degrees, it would freeze. C.If you cool the liquid to 32 degrees, it will freeze. D.If you had cooled the liquid to 32 degrees, it would have frozen. 22.It may rain this afternoon. I hope it doesn’t because I don’t want the match to be cancelled. A. If it rains, the match is cancelled. B. If it rains, the match will be cancelled. C. if it rained, the match would be cancelled D. If it had rained, the match would have been cancelled. 23.Unfortunately, I don’t know Philosophy, so I can’t answer your question. A.If I know Philosophy, I can answer your question. B.If I know Philosophy, I will be able to answer your question. C.If I knew Philosophy, I would be able to answer your question. D.If I had known Philosophy, I would have been able to answer your question. 24._____ there are some more ideas, we can end the meeting now. A. If B. As if C. Unless D. In case 25.If he _____with us now, he _____ the beauty of nature of the National Park. A. is / can enjoy B. was / will enjoy C. has been / would enjoy D. were / could enjoy 26.If they had searched more carefully, they...the watch sooner. A. will find B. would find C. found D. would have found 27.If I had got up early, I _____ to have breakfast now. A. have B.I had C. would have D. would have had 28.I cannot buy a new computer _____ I save enough money. A. if B. even if C. unless D. as if 29.Most people you meet will be polite to you _____. A. if you are polite to them B. if you will be polite to them C. unless you are polite to them D. if you were polite to them 30.If you do so, it _____ the matter worse. A. makes only B. would only make C. will only make D. had only made 31.You _____ English fluently unless you practice it every day. A. will speak B. will not speak C. can speak D. did not speak 32.Hurry up _____ you will miss the bus and be late for school. A. if B. and C. or D. as 33.You will get a good seat if you _____ first. A. come B. came C. have come D. will come 34.Sam will not graduate_____. A. if he passed all the tests B. if he does not pass all the tests. C. unless he passes all the tests D. unless he had passed all the tests. 35.If I had time, I would go with you. A.I am free and surely go with you. B.I am too busy to go with you. C. I will go with you because I have time. D. I am free enough to go with you. 36.If Margaret hadn’t been wearing a seat belt, she.... Injured. A. has been B. would has been C. would be D. would have been 37.If I _____ the rain yesterday, I_____ ill. A. had not caught / would have been B. had not caught / would have not been C. have not caught / were not D. have not caught / would have been 38.He looked frightened as if he _____ a ghost. A. sees B. is seeing C. has seen D. had seen 39.What _____if there _____ a serious nuclear accident. A. will happen / was B. happens / were C. would happen / were D. would happen / had been
Lần sau bn vt thì cách ra cho dễ nhìn nhé~~~~
Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she
2.If you_____to me, you wouldn’t have got so much trouble.
A. listened B. would listen C. had listened D. Would have listened
3.If you don’t know how to spell a word, you_____ look it up in the dictionary.
A. must B. will C. should D. ought
4.If the sun _____, we _____for a walk.
A. shines / will go B. shone / will go C. shone / would go D. had shone / would go
5.The campfire _____ if it _____ last night.
A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains
6.But for our parents, we _____ successful in life.
A. will never be B. would never be C. wouldn’t have be D. would have never been
7.If I _____ my wallet at home this morning, I _____ money for lunch now.
A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had
8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do.
A. were / would know B. is / will know C. had been / would have known D. was / would know
9.If we _____ the plans carefully, we would not have had so many serious mistakes.
A. study B. had studied C. studied D. were studying
10.I will never talk to you again _____ you apologize me _____ your being rude.
A. if / for B. unless / for C. or / of D. whether / or
VII. Choose the sentence which has the same meaning as the root one.
1. " I couldn't have made it without your help' means
A. I couldn't have made it if you helped me.
B. I couldn't have made it if you had helped me.
C. I couldn't have made it if you hadn't helped me.
D. I couldn't have made it if you didn't help me.
2. She didn't stop her car because she didn't see the signal.
A. If she saw the signal, she would stop her car.
B. If she had seen the signal, she would stop her car.
C. If she had seen the signal, she would have stopped her car.
D. If she saw the signal, she would have stopped her car.
3. His flight was deplayed so he couldn't be here on time.
A. He would be here in time if his flight were not deplayed.
B. He would have been here in time if his flight hadn't been deplayed.
C. He would be here in time if his flight hadn't been deplayed.
D. He would have been here in time if his flight weren't deplayed.
4. Without your help, I couldn't overcome the problem.
A. If you don't help me, I can't overcome problem.
B. If you didn't help me, I couldn't overcome problem.
C. If you hadn't helped me, I couldn't overcome problem.
D. If you hadn't helped me, I couldn't have overcome problem.
Gạch chân dưới đáp án đúng:
1. If that hat costs much, I (would have bought / will buy / bought / would buy) a small one.
2. If you (drive / drove / had driven / driven) more carefully, you wouldn't have had so many accidents.
3. If I (make / makes / made / had made) this mistake again, my teacher will get angry with me.
4. If I spoke English, my job (was / were / will be / would be) a lot easier.
5. If he (goes / went / had gone / would go) to London yesterday, he (met / would meet / had met / would have met) his old friend.
6. I will lend them some money if they (ask / will ask / asked / had asked) me.
7. If we had known who he was, we (would have invited / have invited / will invite / would invite) him to speak at our meeting.
8. My dog will bark if it (hear / hears / heard / had heard) any strange sound.
9. If I (had / had had / will have / have) enough money, I would buy a house.
10. They (won't let / not let / wouldn't let / hadn't let) you in if you came late.
11. If you (not go / don't go / hadn't gone / didn't go) away, I'll send for a policeman.
12. If I (were / am / be / was) in your place, I would accept Mr.Anderson's invitation.
13. If I (win / had won / won / winning) a big prize in a lottery, I'd give up my job.
14. If I (is / are / was / were) you, I (will tell / told / would tell / would have told) the truth.
15. I was busy. If I (have / had / had had / have had) free time. I (would go / will go / would have gone / go) to the cinema with you.
16. Why didn't you attend the meeting?
Oh, I did not know. If I (know / knew / had known / known) I (would come / would have come / will come / had come) there.
17. What (would / will / did / had) we do if they do not come tomorrow?
18. If I had enough time now, I (would write / write / will write / wrote) to my parents.
19. It's too bad Helen isn't here. If she (is / was / were / are) here, she (will know/ knows / would know / would have known) what to do.
20. If I don't eat breakfast tomorrow morning, I (will get / got / would get / had got) hungry during class.
Choose the best answer for each of the fllowing sentences
1. ............ if you work harder, you will be sacked.
A. Whether B. If C. However D. Unless
2. I think you should stop smoking.
A. If I am you, I will stop smoking B. If I were you, I will stop smoking
C. If I were you, I would stop smoking D. If I had been you, I would stop smoking
3. If you take the ice out of the fridge, it ...........
A. vaporizes B. melts C. heats D. disappears
4. We should do something to protect water from being polluted ........... we will have nothing to drink in the future.
A. if B. whether C. or D. unless
5. Let's knock on their door to see .......... home.
A. if they're B. unless they're C. whether they were D. if they were
6. Unless we .......... more snow, we can't go skiing.
A. will have B. have C. have had D. had
7. You'll fail the exam ........... you start revising.
A. if B. until C. when D. unless
8. Unless you wash the car, you .............. not drive it at the weekend
A. would B. could C. have to D. may
9. If Peter ............... his car before the drive, he ................ the problem of out of petrol.
A. cheked / will not get B. had checked / would not have got
C. checks / will not have got D. would be checking / will not have got
10. He stepped on the mine, and it exploded.
A. If he doesn't step on the mine, it doesn't explode.
B. If he doesn't step on the mine, it won't explode.
C. If he didn't step on the mine, it wouldn't explode.
D. If he hadn't step on the mine, it wouldn't have exploded.
1. comes
2. find
3. lived
4. arrived
5. will phone
6. would give
7. would
8. can go
9. will have
10. stop
11. were
12. had spoken
13. had listened – would have performed
14. comes – will have
Gạch chân dưới đáp án đúng:
1. If she (come / comes / came / had come) late again, she'll lose her job.
2. I'll let you know if I (find / finds / found / had found) out what's happening.
3. If we (live / lived / would live / had lived) in a town, life would be better.
4. I'm sure he wouldn't mind if we (arrive / arriving / arrived / had arrived) early.
5. We (will phone / would phone / phoned / had phoned) you if we have time.
6. If I won the lottery, I (gave / had given / will give / would give) you half the money.
7. It (will / would / can / may) be a pity if she married Fred.
8. If I'm free on Saturday, I (to go / could go / went / can go) to the mountains.
9. She (will has / had / will have / have) a nervous breakdown if she goes on like this.
10. I know I'll feel better if I (will stop / stopped / stop / had stopped) smoking.
11. If I (am / were / will be / had been) you, I would help him.
12. I could have understood him if he (speaks / spoke / had spoken / would speak) more slowly.
13. He didn't listen to the teacher. If he (listens / listened / has listened / had listened) carefully, he (will performed / would perform / would have performed / had performed) well in the examination.
14. He's waiting for his mother to come back from Chicago. If his mother (come / comes / will come / came) home, he?? đề thiếu
Bài 3: Chọn đáp án đúng.
1. I would have visited you before if there _____ quite a lot of people in your house.
A. hadn't B. hadn't been C. wouldn't be D. wasn't
2. If you had caught the bus, you _____ late for work.
A. wouldn't have been B. would have been
C. wouldn’t be D. would be
3. If I _____, I would express my feelings.
A. were asked B. would ask
C. had been asked D. asked
4. If _____ as I told her, she would have succeeded.
A. she has done B. she had done
C. she does D. she did
5. Will you be angry if I _____ your pocket dictionary?
A. stole B. have stolen C. were to steal D. steal
6. You made a mistake by telling her a lie. It _____ better if you _____ to her.
A. would have been / hadn't lied B. would be / didn't lie
C. will be / don't lie D. would be / hadn't lied
7. John would be taking a great risk if he _____ his money in that business.
A. would invest B. invested C. had invested D. invests
8. She wouldn't have given them all that money if we _____ her to.
A. wouldn’t advise B. won't advise
C. hadn't advised D. didn't advise
9. If the tree hadn't been so high, he _____ it up to take his kite down.
A. could have climbed B. climb
C. is climbing D. climbed
10. If the wall weren't so high, he _____ it up to take his ball down.
A. climbed B. could climb C. is climbing D. climb
11. If I _____ her phone number, I _____ her last night
A. had known / could have phoned B. knew / would have phoned
C. know / can phone D. knew / could phone
12. If he ______ the truth, the police wouldn’t arrest him.
A. tells B. told C. had told D. would tell
13. If you press that button what _____?
A. would happen B. would have happened
C. will happen D. happen
14. She says if she _____ that the traffic lights were red she _____.
A. had realized / would stop B. realized / could have stopped
C. has realized / stopped D. had realized / would have stopped
15. I am very thin. I think, if I _____ smoking, I might get fat.
A. stop B. had stopped C. will stop D. stopped
16. If I _____ that yesterday, I _____ them.
A. had discovered / would inform
B. had discovered / would have informed
C. had discovered / could inform
D. discovered / can inform
17. If you _______ to the course regularly, they ________ a certificate last year.
A. go / gave B. go / give
C. had gone / would have given D. went / would give
18. I think he is not at home. If he _____ in, he ______ the phone.
A. was / answered B. were / would answer
C. were / would have answered D.had been / would have answered
19. If I ______ in London now, I could visit British Museum.
A. were B. had been C. have been D. would be
20. If Columbus _______ money from Queen Isabella, he _______ across the Atlantic.
A. do not receive / could not sail
B. had not received / might not have sailed
C. did not receive / might not have sailed
D. would not receive / might not sail
1. I would have visited you before if there _____ quite a lot of people in your house.
A. hadn't B. hadn't been C. wouldn't be D. wasn't
2. If you had caught the bus, you _____ late for work.
A. wouldn't have been B. would have been
C. wouldn’t be D. would be
3. If I _____, I would express my feelings.
A. were asked B. would ask
C. had been asked D. asked
4. If _____ as I told her, she would have succeeded.
A. she has done B. she had done
C. she does D. she did
5. Will you be angry if I _____ your pocket dictionary?
A. stole B. have stolen C. were to steal D. steal
6. You made a mistake by telling her a lie. It _____ better if you _____ to her.
A. would have been / hadn't lied B. would be / didn't lie
C. will be / don't lie D. would be / hadn't lied
7. John would be taking a great risk if he _____ his money in that business.
A. would invest B. invested C. had invested D. invests
8. She wouldn't have given them all that money if we _____ her to.
A. wouldn’t advise B. won't advise
C. hadn't advised D. didn't advise
9. If the tree hadn't been so high, he _____ it up to take his kite down.
A. could have climbed B. climb
C. is climbing D. climbed
10. If the wall weren't so high, he _____ it up to take his ball down.
A. climbed B. could climb C. is climbing D. climb
11. If I _____ her phone number, I _____ her last night
A. had known / could have phoned B. knew / would have phoned
C. know / can phone D. knew / could phone
12. If he ______ the truth, the police wouldn’t arrest him.
A. tells B. told C. had told D. would tell
13. If you press that button what _____?
A. would happen B. would have happened
C. will happen D. happen
14. She says if she _____ that the traffic lights were red she _____.
A. had realized / would stop B. realized / could have stopped
C. has realized / stopped D. had realized / would have stopped
15. I am very thin. I think, if I _____ smoking, I might get fat.
A. stop B. had stopped C. will stop D. stopped
16. If I _____ that yesterday, I _____ them.
A. had discovered / would inform
B. had discovered / would have informed
C. had discovered / could inform
D. discovered / can inform
17. If you _______ to the course regularly, they ________ a certificate last year.
A. go / gave B. go / give
C. had gone / would have given D. went / would give
18. I think he is not at home. If he _____ in, he ______ the phone.
A. was / answered B. were / would answer
C. were / would have answered D.had been / would have answered
19. If I ______ in London now, I could visit British Museum.
A. were B. had been C. have been D. would be
20. If Columbus _______ money from Queen Isabella, he _______ across the Atlantic.
A. do not receive / could not sail
B. had not received / might not have sailed
C. did not receive / might not have sailed
D. would not receive / might not sail
Put the verbs in brackets into their correct forms!
1. I would have read the letter if I____had known_______ (know) it was from you.
2. If Tony doesn't help in the garden I_____won't finish_____ (not finish) my work in time.
3 .If you______didn't tell____ (not tell) me about Maxwell's birthday I would forget it.
4. We_____would have caught________ (catch) the train earlier if Mary had found her purse.
5. If Susan_____had learned_______ (learn) the poem she would have known the answer.
6. If it_____is_______ (be) too hot we will stop and get a cold drink.
7. If it_____didn't rain______ (not rain) today I would stay it home.
8. If the Professor spoke clearly we_______would understand___ (understand) him better.
9. If you go on talking like that we______will throw____ (throw) you out.
10. If Sasha_______went___ (go) home now he would meet his own brother.
11. If it rained, the streets_____would be_____ (be) wet.
12. If I___hadn't told_______ (not tell) Jim the address he wouldn't have found you.
13. The bird_____would have died_______ (die) if you had caught it.
14. What______would you do_____ (you, do) if you won the lottery?
15. If the weather___doesn't change______ (not change) we will reach the top of the mountain.
16. Dinner_____would be_____ (be) fine if the meat weren't cold.
17. I'm sure Benny____will come________ (come) if you wait a bit longer.
18. If you ring the bell, somebody______will answer_____ (answer) it.
19. If Bert____had seen______ (see) you, he would have talked to you.
20. You_____would have found______ (find) your ticket if you had looked into your pockets.
21. You______will fall_____ (fall) ill if you eat so much.
22. What______would have happened_____ (happen) if the door had not been opened?
23. If Chris asked you for a cigarette,_____would you give_____ (you, give) him one?
24. If you______bought____ (buy) that big car, you would need a lot of money.
25.______would you change_____ (You, change) the colour of your hair if I asked you to do so?
26. If you give me the letter, I________will post____- (post) it for you.
27. _____would you have posted_______(You, post) the letter if I had given it to you?
28. If the weather is fine, I_______will go_____ (go) swimming.
29. If you______don't work______ (not work) harder, you won't pass the exam.
30. If they_____were______ (be) rich, they would travel around the world.
31. The children_____would go_____ (go) skating if the lake were frozen.
32. What would you have done, if you____had lost_______ (lose) your handbag?
33. What will happen if you_______don't know_____ (not know) the answer?
34. She_____would have gone_____(go) on holiday, if she hadn't been ill.
35. If I_______had noticed________ (notice) you, I would have said hello.
36. If I_____were_____ (be) like you, I wouldn't watch such films.
37. If you opened your eyes, you________would see___ (see) a wonderful world.
38. People_____will live______ (live) in peace if they stop fighting.
39. If Tom drinks so much, he_____can't drive____ (cannot drive) home.
40. If we_____didn't hurry______ (not hurry) we would miss the train.
41. He_____wouldn't spend______ (not spend) so much money if he weren't a happy person.
42. ____would you have come______(You, come ), if you had had more time?
43. If Jim____had studied_____ (study) the new words he would have got a better mark.
44. If he were rich, he___could buy________ (buy) the house.
45. If you don't hurry you_____willbe______ (be) late.
46. If it wasn't so hot, we_____would play______ (play) football.
47. If I_____were_____ (be) ill, would you visit me?
48. If Sean____hadn't been________ (not be) driving so fast, the police would not have stopped him.
49.I f I had sold my house, I______would have got______ (get) 4 million pounds.
50. If I_____were_______ (be) you I would I would do it.
Put the verbs in brackets into their correct forms!
1. I would have read the letter if I______had known_____ (know) it was from you.
2. If Tony doesn't help in the garden I_____won't finish_____ (not finish) my work in time.
3 .If you_____didn't tell_____ (not tell) me about Maxwell's birthday I would forget it.
4. We______would have caught_______ (catch) the train earlier if Mary had found her purse.
5. If Susan______had learnt______ (learn) the poem she would have known the answer.
6. If it______is______ (be) too hot we will stop and get a cold drink.
7. If it______didn't rain_____ (not rain) today I wouldn't stay at home.
8. If the Professor spoke clearly we_____would_____ (understand) him better.
9. If you go on talking like that we_____will throw_____ (throw) you out.
10. If Sasha_____went_____ (go) home now he would meet his own brother.
11. If it rained, the streets_____would be_____ (be) wet.
12. If I_____hadn't told_____ (not tell) Jim the address he wouldn't have found you.
13. The bird______would have died______ (die) if you had caught it.
14. What_____would you do______ (you, do) if you won the lottery?
15. If the weather____doesn't change_____ (not change) we will reach the top of the mountain.
16. Dinner_____would be_____ (be) fine if the meat weren't cold.
17. I'm sure Benny______will come______ (come) if you wait a bit longer.
18. If you ring the bell, somebody______will answer_____ (answer) it.
19. If Bert_____had seen_____ (see) you, he would have talked to you.
20. You______would have found_____ (find) your ticket if you had looked into your pockets.
21. You______will fall_____ (fall) ill if you eat so much.
22. What_____would have happened______ (happen) if the door had not been opened?
23. If Chris asked you for a cigarette,_____would you_____ (you, give) him one?
24. If you_____bought_____ (buy) that big car, you would need a lot of money.
25.______Would you change_____ (You, change) the colour of your hair if I asked you to do so?
26. If you give me the letter, I______will post______- (post) it for you.
27. ______Would you have posted______(You, post) the letter if I had given it to you?
28. If the weather is fine, I______will go______ (go) swimming.
29. If you______don't work______ (not work) harder, you won't pass the exam.
30. If they______were_____ (be) rich, they would travel around the world.
31. The children_____would go_____ (go) skating if the lake were frozen.
32. What would you have done, if you_____had lost______ (lose) your handbag?
33. What will happen if you______don't know______ (not know) the answer?
34. She_____would have gone_____(go) on holiday, if she hadn't been ill.
35. If I_______had noticed________ (notice) you, I would have said hello.
36. If I_____were_____ (be) like you, I wouldn't watch such films.
37. If you opened your eyes, you_____would see______ (see) a wonderful world.
38. People_____will live______ (live) in peace if they stop fighting.
39. If Tom drinks so much, he____cannot drive____ (cannot drive) home.
40. If we_____didn't hurry______ (not hurry) we would miss the train.
41. He______wouldn't spend_____ (not spend) so much money if he weren't a happy person.
42. _____Would you have come_____(You, come ), if you had had more time?
43. If Jim_____had studied____ (study) the new words he would have got a better mark.
44. If he were rich, he_____would buy______ (buy) the house.
45. If you don't hurry you______will be_____ (be) late.
46. If it weren't so hot, we_____would play______ (play) football.
47. If I_____were_____ (be) ill, would you visit me?
48. If Sean______hadn't been______ (not be) driving so fast, the police would not have stopped him.
49.If I had sold my house, I______would have got______ (get) 4 million pounds.
50. If I______were______ (be) you I would do it.
Bài tập:Chia động từ ở câu điều kiện loại 3
1.If had known that you were in hospital I.......would have visited.....................(visit) you
2.The ground was very soft.But for that, my horse ............would have won..............(win)
3.If you...........had arrived................(arrive) ten minutes earlier you would have got a seat
4.You would have seen my garden at its best if you.......had been..........(be) here last week.
5.But for his quickness I..........would have been................(be) killed.
6.I shouldn't have believed it if I..............hadn't seen............(not see) it with my own eyes
7.If he had sipped you,he........would have fallen...........(fall) 500 metres
8.If he had asked you, would you.......have accepted................(accept)?
9.If I.........had had....... (had) a map I would have been all right
10.If I.......had known.......(know) that you were coming I'd have baked a cake.
- Dang cau dieu kien :
+ Cđk loai 1 : If + S + V(s,es), S + Will/Can/shall…… + V
+ Cđk loai 2 : If + S + V2/ Ved, S +would/ Could/ Should…+ V
+ Cđk loai 3 : If + S + Had + V(pp)/Ved, S + would/ could…+ have + V(pp)/Ved
1. would have visited
2. would have won
3. had arrived
4. had been
5. would have been
6. hadn't seen
7. would have fallen
8. would you have accepted
9. had had
10. had known
Choose the best answer for each of the following sentences.
1. In my experiments, the liquid is cooled to 32oF. It always freezes.
A. If you cool the liquid to 32 degrees, it froze.
B. If you cooled the liquid to 32 degrees, it would freeze.
C. If you cool the liquid to 32 degrees, it will freeze.
D. If you had cooled the liquid to 32 degrees, it would have frozen.
2. It may rain this afternoon. I hope it doesn't because I don't want the match to be cancelled.
A. If it rains, the match is cancelled.
B. If it rains, the match will be cancelled.
C. If it rained, the match would be cancelled.
D. If it had rained, the match would have been cancelled.
3. Unfortunately, I don't know Philosophy, so I can't answer your question.
A. If I know Philosophy, I can answer your question.
B. If I know Philosophy, I will be able to answer your question.
C. If I knew Philosophy, I would be able to answer your question.
D. If I had known Philosophy, I would have been able to answer your question.
4. ______ there are some more ideas, we can end the meeting now.
A. If
B. As if
C. Unless
D. In case
5. If he ______ with us now, he _____ the beauty of nature of the National Park.
A. is / can enjoy
B. was / will enjoy
C. has been / would enjoy
D. were / could enjoy
6. If they had searched more carefully, they _____ the watch sooner.
A. will find
B. would find
C. found
D. would have found
7. If I had got up early, I _______ to have breakfast now.
A. have
B. had
C. would have
D. would have had
8. I cannot buy a new computer ____ I save enough money.
A. if
B. even if
C. unless
D. as if
9. Most people you meet will be polite to you ______ .
A. if you are polite to them
B. if you will be polite to them
C. unless you are polite to them
D. if you were polite to them
10. If you do so, it _____ the matter worse.
A. makes only
B. would only make
C. will only make
D. had only made
11. You ______ English fluently unless you practice it every day.
A. will speak
B. will not speak
C. can speak
D. did not speak
12. Hurry up ______ you will miss the bus and be late for school.
A. if
B. and
C. or
D. as
13. You will get a good seat if you ______ first.
A. come
B. came
C. have come
D. will come
14. Sam will not graduate _______ .
A. if he passed all the tests
B. if he does not pass all the tests
C. unless he passes all the tests
D. unless he had passed all the tests
Choose the best answer for each of the following sentences
1. If I had time, I would go with you.
A. I am free and surely go with you.
B. I am too busy to go with you.
C. I will go with you because I have time.
D. I am free enough to go with you.
2. If Margaret hadn't been wearing a seat belt, she ____ Injured.
A. has been
B. would has been
C. would be
D. would have been
3. If I ____ the rain yesterday, I ______ ill.
A. had not caught / would have been
B. had not caught / would not have been
C. have not caught / were not
D. have not caught / would have been
4. He looked frightened as if he _____ a ghost.
A. sees
B. is seeing
C. has seen
D. had seen
5. What _____ if there _____ a serious nuclear accident.
A. will happen / was
B. happens / were
C. would happen / were
D. would happen / had been
