1. The crops would have been ruined if the flood had risen higher.

Unless the flood had risen higher, the crops would not have been ruined

2. If you had not sneezed, he wouldn't have known that we were there.

Unless you had sneezed, he would not have known that we were there

3. If she did her hair differenty, she would look quite nice.

Unless she did her hair differently, she would not look quite nice

4. If john had played for our football team, we would not have lost the game.

Unless John had played for our football team, we would have lost the game.

1. The crops would have been ruined if the flood had risen higher.

Unless the flood had risen higher, the crops would not have been ruined

2. If you had not sneezed, he wouldn't have known that we were there.

Unless you had sneezed, he would not have known that we were there

3. If she did her hair differenty, she would look quite nice.

Unless she did her hair differently, she would not look quite nice

4. If john had played for our football team, we would not have lost the game

Unless john had played for our football team, we would have lost the game.

Use UNLESS instead of IF.

1. If you are not careful, you will cut yourself with that knife.

UNLESS you are careful, you will cut yourself with that knife.

2. If you do not like this one, I'll bring you another.

UNLESS you like this one, I'll bring you another.

3. I'll not be able to do any work if I do not have a quiet room.

UNLESS I have a quiet room, I'll not be able to do any work

4. If she does not hurry, she'll be late.

UNLESS she hurries, she'll be late.

5. If we had more rain, out crops would be better.

UNLESS we had more rain, out crops wouldn't be better.

6. The crops would be have been ruined in the flood had risen higher.

UNLESS the flood had risen higher, The crops wouldn't be have been ruined

7. If you had not sneezed, he wouldn't have known that we were there.

UNLESS you had sneezed, he wouldn't have known that we were there.

8. If she did her hair differently, she would look quite nice.

UNLESS she did her hair differently, she would look quite nice.

9. If John had played for our football team, we would not have lost the game.

UNLESS John had played for our football team, we would have lost the game.

10. If I won a big prize in a lottery, I'd give up my job.

UNLESS I won a big prize in a lottery, I'd not give up my job.

Use UNLESS instead of IF

1. If you do not like this one, I'll bring you another.

Unless............you like this one, I will bring you another..................................................

2. If she does not hurry, she'll be late.

Unless.............she hurries, she will be late........................................

3. If you are not careful, you'll cut yourself.

Unless...........you are careful, you will cut yourself...............................................

4. If you had not sneezed, he wouldn't have known that we were there.

Unless........you had sneezed, he wouldn't have known we were there

.....................................................

1. If you do not like this one, I'll bring you another.

Unless.....you like this one,i 'll bring you another........................................................

2. If she does not hurry, she'll be late.

Unless..she hurries, she'll be late...................................................

3. If you are not careful, you'll cut yourself.

Unless you are careful ,you'll cut yourself..........................................................

4. If you had not sneezed, he wouldn't have known that we were there.

unless you had sneezed, he wouldn't have known tha we were there

he hadn't drunk alcohol, he would have passed the contest.

you change your attitude and become friendlier, you'll lose your job.

somebody waters these flowers, they will die.

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

1,If you do not like this one, I’ll bring you another ( Use UNLESS instead of IF) →Unless............you like this one, I 'll bring you another..........................................

2.If Lucia had been=> were here now, she would find out the truth about he uncle’saccident.( Find the mistake and correctit ) → ...........,.................................................................................... 3.Scientists have invented new devices to help people live a longer life. →New devices..............have been invented to help people live longer by scientists............................................................. 4 .Noise pollution/ big cities/ lead/ hearing/ problems..( Write the complete sentences) →................Noise pollution in big cities leads to hearing problems........................................................................................................

c.ơn bn nha

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless he hurry, he will be late for school
2. unless it stops raining, we won't go out
-> if it doesn't stop raining, we won't go out
3. you will get success if you are patient
- unless you aren't patient,you will get success
4. those flowers will die if nobody waters them
- unless nobody doesn't water them,those flowers will die
5. no one can help him if he doesn't tell the truth
- unless he tell the truth,no one can help him
6. you will catch a cold unless you keep your feet dry
- if you don't keep your feet dry,you won't catch a cold
7. if i don't catch the plane, i will not be home by five
- unless i catch the plane, i will not be home by five
8. if you don't apologize, i will never speak to you again
-unless you apologize, i will never speak to you again
9. unless he gives me his number, i won't phone him
- if he doesn't give me his number, i won't phone him
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless he learn his lessons carefully,he can do that exercise

TYPE 2
1. unless the studied harder, he would fail the final exam
- if the didn't study harder, he would fail the final exam
2. unless the drank alcohol, he would pass the contest
- if the didn't drink alcohol, he would pass the contest
3. unless he phoned immediately, he wouldn't meet Mary
-if he didn't phone immediately, he wouldn't meet Mary
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless we didn't have a calculator, we couldn't work his more quickly
5. if i weren't weak, i could walk
- unless i were weak, i could walk
6. if you weren't slow now, you could uiwn the race
- unless you were slow now, you could uiwn the race
7. if you didn't speak very quickly, the students could hear you well
- unless you spoke very quickly, the students could hear you well
8. if tom didn't invite me, i wouldn't go to the party
- unless tom invited me, i wouldn't go to the party
9. if they didn;t know his number now, they wouldn't give it to me
- unless they knew his number now, they wouldn't give it to me
10. unless he were careful, he would have serious accident
- if he weren't careful, he would have serious accident

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.