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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.
11. Be quiet or the teacher will be angry.=>If…you aren't quiet, the teacher will be angry ……………………………………………………………………..
12. I don't tell him the answer because he isn't at home.
=> If ……he were at home, I would tell him the answer…………………………………………………………………..
13. My friend and I don't have enough money, so we will not buy a house of our own.
=> If …………My friend and I had enough money, we would buy a house of our own. ……………………………………………………………..
14. Unless the weather is better now, we can't go for a walk.
=> If ……the weather isn't better now, we can't go for a walk. …………………………………………………………………..
15. Because I don't know his address, I don't give it to you.
=> If ……………I knew his address, I would give it to you. …………………………………………………………..
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.
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
1) It is late now; I don't think Ann will come to see us
-> I would be surprised if Ann came to see us.
2)We don't go on holiday because we don't have enough money
-> If we had enough money, we would go on holiday.
3) Do these exercises more carefully or you will fail the exams
-> Unless you do these exercises more carefully, you will fail the exams.
4) I do not know the answer so I can not tell you
-> If I knew the answer, I could tell you.
5) She can't apply for the job because she doesn't know French
-> If she knew French, she could apply for the job.
6) if she didn't come here now, we'd come back home
-> Unless she came here now, we'd come back home.
7) Be careful or you will not be able to get the job
-> Unless you are careful, you will be able to get the job.
8) The trees will die unless it rains soon
-> If it doesn't rains soon, the trees will die.
Viết lại các câu sau sử dụng" unless"
8. I'll not be able to do any work if I do not have a quite room.
.......................UNLESS I HAVE A QUIET ROOM , I WON'T BE ABLE TO DO ANY WORK..............................………………………...
9. If she does not hurry, she'll be late.
...............UNLESS SHE HURRIES , SHE WILL BE LATE..............................................
10. If we had more rain, our crops would be better.
..................UNLESS WE HAD MORE RAIN , OUR CROPS WOULDN'T BE BETTER..............................................
11. Fred wouldn't do that if he didn't have your permission.
...................UNLESS FRED HAD YOUR PERMISSSION , HE WOULDN'T FO THAT.......................................
12. I won't brother to call you if I don't hear from Mr Brown.
............ .............UNLESS YOU HEAR FROM MR BROWN , I WON'T BROTHER TO CALL YOU................ ..................
13. If you didn't agree with him. Charles wouldn't even suggest it.
.....................UNLESS YOU AGREED WITH HIM , HE WOULDN'T EVEN SUGGEST......................................
14. We can't write to Mr Anderson if he doesn't send us his address.
...............UNLESS MR ANDERSON SENDS US THIS ADRESS , WE CAN'T WRITE TO HIM................................. .. .............................................
15. The lawyer wouldn't say that if he didn't have strong evidence.
.....................UNLESS THE LAWYER HAD STRONG EVINDENCE , HE WOULDN'T SAY THAT...............................................
16. If you don't study harder, you are going to fair the examination.
.......................UNLESS YOU STUDY HARDER , YOU ARE GOING TO FAIL THE EXAMINATION....................................
17.I won't say anything if Tom doesn't bring up the matter himself.
....................UNLESS TOM BRINGS UP THE MATTER HIMSELF , I WON'T SAY ANYTHING…………………… ………………………
18. If no more guests come, there will be enough food for everyone.
.........………UNLESS NO MORE GUESTS COME, THERE WILL BE ENOUGH FOOD FOR EVERY ONE…………………… ………………………
19. I wouldn't have believed in if I hadn't seen it with my own eyes.
.… ……UNLESS I HAD SEEN IT WITH MY OWN EYES , I WOULDN'T HAVE BELIEVED IN IT………………………… .................
20. Our dog wouldn't have barked if he hadn't heard a strange noise.
...................UNLESS OUR DOG HAD HEARD A STRANGE NOISE , HE WOULDN'T HVAE BARKED .............................................
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.
wouldn't spend
wouldn't spend