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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
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
Task 2: Supply the correct verb form
1. If we meet at 9:30, we (have) ________will have_________plenty of time.
2. Lisa would find the milk if she (look) _______looked__________ for it in the fridge.
3. What (happen) _______will happen__________if I press this button?
4. The door will be unlocked if you (press)_________press________ the green button.
5. If you go to Paris, where will you (stay) _________stay________?
6. The flight may be cancelled if the fog (get) ________gets_________thick.
7. If the milkman (come) _______comes__________, tell him to leave two pints.
8. I (call) _______would call__________ the office if I were you.
9. Someone (sit) ________will sit_________on your glasses if you leave them there.
10. What will I (do) ______do___________if I hear the burglar alarm?
11. Unless they turn that radio off, I (go) _____will go____________mad.
12. If you were made redundant, what would you (do) _________do________?
13. If you spoke louder, your classmates (understand) __________would understand_______ you.
14. I'll probably get lost unless he (come) __________comes_______with me.
15. You (not have) _______wouldn't have__________ so many accidents if you drove more slowly.
16. If she (leave) _______leaves__________ the fish here, the cat will eat it.
17. Unless you (tell) _______tell___________ the truth, I won’t help you.
18. If they (hang) _____hung______ that picture lower, people would be able to see it.
19. She (be) ___was ______able to walk faster if she didn’t have such high-heel shoes.
20. Dan (arrive) _____would arrive____________ safe if he drove slowly.
~~~~~~~~~~~~~~~~~~~~~~~~~~
a. Put the verb in brackets into the correct tense:
1.If I see him, I (give) ...........will give............................ him a gift.
2.If he (study) ...............studies..................... hard, he can pass the exam.
3.Rice plants (grow) ..........will grow...................... if there is enough rain.
4.If she (not hurry) .........does not hurry........................, she may be late.
5.If I tell you a secret, ..will............. you (promise) ......promise.................. not to tell it to anyone ?
1. I would be surprised if Ann came to see us now.
2. If we had enough money,we would go on holiday
3. Unless you do these exercises more carefully, you will fail the exam.
4. If I knew the answer, I could tell you.
5. If she knew French, she could apply for the job
6. Unless she cam here now, we'd come back home
7. Unless you are careful, you will be able to get the job
8. If it rains soon, the tree won't die
* Rewrite the sentences.
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 cannot tell you.
-> If _________I knew the answer, I could tell you_________.
5. She can't apply for the job because she doesn't know Frencj.
-> If she knew__________Frencj, 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 won't be able to get the job________.
8. The trees will die unless it rains soon.
-> If_________it doesn't rain soon, the trees will die_________.
Question I: put the verbs in brackets into the correct form.( câu điều kiện loại 1)
1. If we( recycle).......recycle..... more, we help the earth.
2. factories( not dump).......won't dump..........waster into rivers if the government fine them heavily.
3. if people travel to work by bus, there( be)..will be.... fewer car fumes.
4. we( save) ...will save.......thousands of trees if we don't waste paper.
5. if we use water carefully, more people( have)..will have..fresh water.6. if the factory( continue)........continues.... dumping poison into the lake, all the fish and other aquatic animals will die.
7. if we recycle mỏe, we( help).........will help............. the earth.
8. if people ( travel)...........travel........ to work by bus, there will be fewer car fumes.
9. we save tthusands of trees if we( not waste).................don't waste paper.
10. factories don't dump waste into rivers if the govenment( fine).......fine.......... them heavily.
Question II. put the verbs in brackets into the correct form.
1. if he( study)......studies........ harder, he can passan exam.
2. she may be late if she( not hurry)....does not hurry..............3. if you study harder, you(pass)......will pass............ the exam.
4. if you are kind to me, I(be)......will be............good to you.
5, if he( give)............gives............up smoking,as his doctor orders, he will be soon well again.
6. you( not pass)......will not pass........your driving test unless you drive more carefully.
7. he'll be ill if he( not stop).......does not stop...........worrying so much.
8. we'll go to the beach tomorrow if it( be)......is................... nice.
Question III. put the verbs in brackets into the correct form.( câu điều kiện loại 2)
1. if I were you, I(look)....would look.............. for a new place to live.
2. if Lan wasn't ill, she( join)........would join.. out tree plating activity.3. if there were fewer cars on the road, there(be).....would be................ less pollution.
4. if people really cared about the environment, they( not dump)...........wouldn't dump.......waste into the lake.
5. if there was no fresh water in the world, what(happen).....would happen........
6. if you (be)..........were.......the president, what would you do to help the environment?
1 If you (find) a skeleton in the cellar, don't mention it to anyone.
FIND
2 If you pass your examination, we (have) a celebration.
WILL HAVE
3 What (happen) if I press this button?
WILL HAPPEN
4 I should have voted for her if I (have) a vote then.
HAD HAD
5 If you go to Paris, where you (stay)?
WILL YOU STAY
6 If someone offered to buy you one of those rings, which you (choose)?
WOULD YOU CHOOSE
7 The flight may be cancelled if the fog (get) thick.
HAD GOT
8 If the milkman (come), tell him to leave two pints.
COMES
9 Someone (sit) on your glasses if you leave them there.
WILL SIT
10 You would play better bridge if you (not talk) so much.
DIDN'T TALK
11 What I (do) if I hear the burglar alarm?
WILL I DO
12 If you (read) the instructions carefully, you wouldn't have answered the wrong question.
HAD READ
13 I could repair the roof myself if I (have) a long ladder.
HAD
14 Unless they turn that radio off, I (go) mad.
WILL GO
15 If you were made redundant, what you (do)?
WOULD YOU DO
16 We'll have a long way to walk if we (run) out of petrol here.
RUN
17 If you shake that bottle of port, it (not be) fit to drink.
WON'T BE
18 I'll probably get lost unless he (come) with me.
COMES
19 You (not have) so many accidents if you drove more slowly.
WOULDN'T HAVE
20 If you (wear) a false beard, nobody would have recognized you.
HAD WORN
21 If she (leave) the fish there, the car will get it.
LEAVES
22 Unless they leave a lamp beside that hole in the road, somebody (fall) into it.
WILL FALL
23 You'll get pneumonia if you (not change) your wet clothes.
DON'T CHANGE
24 If I had known that you couldn't eat octopus, I (not buy) it.
WOULDN'T HAVE BOUGHT
25 If they (hang) that picture lower, people would be able to see it.
HUNG
26 She (be able) to walk faster if her shoes hadn't such high heels.
WOULD BE ABLE
27 I (bring) you some beer if I had known that you were thirsty.
WOULD HAVE BROUGHT
28 If you had touched that electric cable, you (be) elecrocuted.
WOULD HAVE BEEN
29 If the story hadn't been true, the newspaper (not print) it.
WOULDN'T HAVE PRINTED
30 I (not buy) things on the instalment system if I were you.
WOULDN'T BUY
31 Dial 999 if you (want) Police, Ambulance or Fire Brigade.
WANT
32 You (not be) any use to me unless you learn to type.
WON'T BE
33 If anyone attacked me, my dog (jump) at his throat.
WOULD JUMP
34 If he were in, he (answer) the phone.
WOULD ANSWER
35 The ship would have run around if the pilot (make) one mistake.
HAD MADE
36 I shouldn't have taken your umbrella if I (know) that it was the only one you had.
HAD KNOWN
bài tập về câu điều kiện loại 1,2,3
`1 if i ( have )......have....... time , i will write to him
2 if itt is coll , i ( need ) ..........will need..................a heavier coat 3. what are you going to do if you ( have) ...................have....... a holiday?
5 if I meet Helen , I ( give )............will give..............................her your message
6 if flowers don't get any water , they (die)..........will die...........................................
7 if I ( get ) ........get..................... a headache , i usually take some aspirins
8 i will go to the party unless it ( rain)............rains......................................
9 she will buy the car as long as it (not be).........isn't..................... too expensive
10 everything ( be ) ........is....................provided yo tell the truth
11 if he (come)..........comes.........., please tell him that i will be back in a few mintes
12 don't come if they (not call )..........don't call............you
13 if you (need )........need................., why don't you tell me?
14 suppose you (win)..........won...............a lot of money , what would you do ?
15 if i got up earlier, i (not be ).............wouldn't be...............late for work
16 if i didn't fell so tired , i (go ) .....would go..........out with you
17 if you ( not pass).....diđn't pass........the exam, would you take it again ?
18 if i ( not be ) .......hadn't been...........busy yesterday , i would have visited you
19 suppose they had offered her a job , do you think she (take )......would have taken..........it ?
20 if i (know)...........had known................that you were ill , i (go)............would ahve gone........to see you
21 i (see)........will see..........him if i (go)........go................to the party tonight
22 my dark (bark)...........will bark...............if it (hear)..........hears..............anything strong
23 what ......will...........we (do)........do...........if they (come)............come.........tomorrow?
24 if she hadn't been ill yesterday , she (go )......would have gone..........to work now
25 if i can go tomorrow , i (let).........will let......you know
bài tập về câu điều kiện loại 1,2,3
`1 if i ( have )...have.... time , i will write to him
2 if it is coll , i ( need ) ....will need......a heavier coat .
3. what are you going to do if you ( have) .......have..... a holiday?
5 if I meet Helen , I ( give )...........will give.............her your message
6 if flowers don't get any water , they (die).........will die................
7 if I ( get ) .....get..... a headache , i usually take some aspirins
8 i will go to the party unless it ( rain)..........rains.................
9 she will buy the car as long as it (not be)....isn’t...... too expensive
10 everything ( be ) ..........will be.....provided yo tell the truth
11 if he (come)....comes....., please tell him that i will be back in a few mintes
12 don't come if they (not call ).....don’t call........you
13 if you (need )........need........, why don't you tell me?
14 suppose you (win).......won......a lot of money , what would you do ?
15 if i got up earlier, i (not be ).......wouldn’t be....late for work
16 if i didn't fell so tired , i (go ) ....would go....out with you
17 if you ( not pass)...didn’t pass......the exam, would you take it again ?
18 if i ( not be ) ....had been...busy yesterday , i would have visited you
19 suppose they had offered her a job , do you think she (take )........would have taken......it ?
20 if i (know)..........knew........that you were ill , i (go).....would go........to see you
21 i (see).......will see.....him if i (go)......go.......to the party tonight
22 my dark (bark)...........will bark.......if it (hear).....hears....anything strong
23 what ........will ....we (do).....do.....if they (come).......come..tomorrow?
24 if she hadn't been ill yesterday , she (go )......would go....to work now
25 if i can go tomorrow , i (let)......will let...you know
Tìm lỗi sai và sửa
1. If someone came -> comes into the store, smile and say, “ May i help you?’’
2. If you try these cosmetics, you look -> will look five years younger
3. If you do -> did not understand what were written in the book you could ask Mr, Pike
4. I will come to meet Mr, Pike and tell him about your problems if you didn't -> don't solve them yourself
5. Sam will not graduate unless he doesn’t pass -> passes all the tests
6. If there isn’t enough food, we couldn’t ->can't continue our journey
7. Unless your pour oil on water, it will -> won't float
8. You will have to take a taxi home if you want to leave now
9. If anyone will phone -> phones , tell them i’ll be back at 11:00
10. We can hire a minibus if there will be -> are enough people