Bài tập câu điều kiện (Conditional sentences)

caught / would have been
He looked frightened as if he _____ a ghost.
A. sees	B. is seeing	C. has seen	D. had seen
What _____if there _____ a serious nuclear accident.
	A. will happen / was	B. happens / were	
	C. would happen / were	D. would happen / had been
Exercise 7: Put the verbs in brackets into the correct form:
If I (know). that you were ill, I (go) to see you.
If she'd had enough money, She (buy)  a car.
I (buy) .. a car If you lend me some money.
I (see)  him if I (go) . to the party last night.
We could have gone out if the weather (not be) so bad.
If the book (not be ) expensive, I'll buy it.
You would be very surprised if he (return)
I'll go out if it (not rain).
They wouldn't come to the party if you (not invite) ..them
What  you (do) . if you (be) .. him? 
If that hat costs much, I (buy) . a small one.
If you (drive) ...more carefully, you (have)  so many accidents.
If I (make) .. that mistake again, my teacher (get)  angry with me. 
If I spoke English, my job (be) .. a lot easier.
If he (go) .. to London yesterday, he ( meet) . his old friend.
I will lend them some money if they (ask) .. me.
If we had known who he was, we (invite) .. him to speak at our meeting. 
My dog (bark)  if it (hear) .. any strange sound.
If I (have) .. enough money, I would buy a house.
They (not/let)  you in if you (come) late.
If you (not go) .. away, I (send)  for a policeman.
If I (be)  in your place, I (accept)  Mr. Anderson’s invitation.
If I (win) . a big prize in a lottery, I’d give up my job.
If I (be) .. you, I (tell)  the truth.
I was busy. If I (have) ..free time. I (go) . to the cinema with you.
Why didn’t you attend the meeting?
Oh, I did not know. If I (know) I (come) ..there.
What .we(do)  if they do not come tomorrow?
If I had enough time now, I (write) . to my parents.
It’s too bad Helen isn’t here. If she (be) .. here, she (know) ..what to do.
If I (eat)  breakfast tomorrow morning, I (get) . hungry during class.
If she (come) .. late again, she (lose) her job.
I (let) . you know if I (find) . out what’s happening.
If we (live) . in a town, life would be better.
I’m sure he wouldn’t mind if we (arrive) . early.
We (phone) . you if we have time.
If I won the lottery, I (give) . you half the money.
It (be) .. a pity if she married Fred
If I’m free on Saturday, I (go) .. to the mountains.
She (have) .. a nervous breakdown if she goes on like this.
I know I (feel) better if I (stop)  smoking.
If I (be)  you, I (help)  him.
I (understand).. him if he (speak) .. more slowly.
He didn’t listen to the teacher. If he (listen) .. carefully, he (perform)  well in the examination
He’s waiting for his mother to come back from Chicago. If his mother (come) . home, he (have) . a lot of presents.
He wanted to buy some Christmas presents but he couldn’t. If he (afford) .. to buy, his children (be) . very happy to greet a new year.
The kitchen will look better if we (have) .. red curtains.
If I knew his address, I (go) .. round and see him.
If you (not be) . so busy, I (show)  you how to play. 
It (be)  quicker if you (use) a computer.
If we (have) .. some eggs, I (make)  you a cake.
Bring him another if he (not/like) .. this one.
She (be) . angry if she (hear) . this tomorrow.
Unless you are more careful, you (have) .. an accident.
If you (like), I (get) . you a job in this company.
If grandmother (be) .. 5 years younger, she (play)  some games.
If he sun (stop)  shinning, there (be)  no light on earth.
If I (be)  a millionaire, I (live) . on Mars.
Exercise 8: Choose the best answer:
If I .a lot of money now, I ..a new car.
A. have /will buy	B. have / would buy	C. had/ will buy	D. had/ would buy.
If I you, I .do that.
A. am/ will	B. were /would	C. were/ will	D. had been/ would.
if I were offered the job, I think I . it.
A. take	B. will take	C. would take	D. would have taken.
I would be very surprised if he..
A. refuses	B. refused	C. had refused	D. would refuse.
Many people would be out of work if that factory..down.
A. closes	B. had closed	C. closed	D. would close.
If she sold her car, she  much money.
A. gets	b. would get	c. will get	d. would have got.
They would be disappointed if we.
a. hadn’t come	b. wouldn’t come	c. don’t come	d. didn’t come.
Would John be angry if I . his bicycle without asking?
a. take	b. took	c. had taken	d. would take.
She .terrible upset if I lost this ring.
a. will be 	b. would be	c. were	d. had been.
If someonein here with a gun, I would be very frightened.
a. would walk	b. walks	c. had walked	d. walked.
What would happen if you ..to work tomorrow?
a. don’t go	b. didn’t go	c. won’t go	d. wouldn’t go.
We ‘ll get wet if we .out.
a. go	b. did go	c. went	d. had gone.
If I go shopping, I some food.
a. buy	b. will buy	c. would buy	d. would have bought.
If I find it, I you.
a. will tell	b. would tell	c. had told	d. told.
What would you do if youa million dollars?
a. would win	b. win	c. had won	d. won.
They ‘d be hurt if I .
a. don’t go	b. didn’t go	c. hadn’t gone	d. wouldn’t go.
If we took the 6: 30 train, wetoo early.
a. would have arrived	b. arrived	c. will arrived	d. would arrive.
If I had known you were in hospital, I to see you.
a. will go	b. would go	c. went	d. would have gone.
If I ., I would have said hello.
a. had seen	b. see	c. saw	d. would see.
I..out if I hadn’t been so tired.
a. will go	b. went	c. would have gone	d. would go.
If I ..a camera, I would have taken some pictures.
a. have 	b. had	c. would have	d. had had.
You won’t pass the examinationyou study more.
a. as long as	b. unless	c. if 	d. whether.
If only I you wanted to invest money in business.
a. had known	b. knew	c. have known	d. know.
If I were to leave my country , I disappointed.
a. probably be 	b. would have been c. will be	d. would be.
If he hadn’t wasted too much time, he.in his examination.
a. would fail	b. wouldn’t fail	c. wouldn’t have failed.	d. won’t fail.
If I had taken that English course, I ..much progress.
a. had made	b. would have made	c. made	d. would make.
If I were in your place, I .a trip to England.
a. will make	b. had made	c. made.	d. would make.
If I .. you , I’d save some of your lottery winning.
a. be	b. were	c. am	d. was
If the car .. larger, we would have bought it.
a. had been	b. have been	c. has been	d. been
If I had enough money, I  abroad to improve my English.
a. will go	b. should go	c. would go	d. should have go to
Exercise 9: Rewrite the following sentences:
He can’t go out because he has to study for his exam.
=> If..
She is lazy so she can’t pass the exam.
If
He will pay me tonight; I will have enough money to buy a car.
=> If.
He smokes too much; that’s why he can’t get rid of his cough.
=> If..
She is very shy, so she doesn’t enjoy the party.
=> If..
I will get a work permit. I will stay for another month.
=> If..
He doesn’t take any exercises. He is so unhealthy
=> If.
We can’t get the ticket because I don’t have the right change.
=> If..
Study hard or you won’t pass the exam.
=> If..
Don’t be impatient or you will make mistakes.
=> If..
I didn’t eat lunch, I feel hungry now.
=> If I...
I only come if they invite me.
=> unless.
He didn’t revise all his lessons, he failed the exam.
=> If he..
The park is over there, only 5 minutes’ walk.
=> If you walk.
Leave me alone or I’ll call the police.
=>Unless	
If you arrive at the office earlier than I do, please turn on the air-conditioner.
=> Should.	
The children don’t go to school in the snowy weather.
=> If it 	
He died so young; otherwise, he would be a famous musician by now.
=>Had 	
You must tell me the whole truth or I won’t help you.
=> Unless	
The car breaks down so often because you don’t take good care of it.
=> Were I	
He is very bad-tempered, that’s why his wife left him soon after marriage.
=> If he
Don’t tell lies to your boss or you’ll be fired at once.
=> If
She got married at such an early age: otherwise, she would be at university now.
=> Had .	- 3 -
Exercise 10: One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them.
1. If we will reduce the speed of population growth, there will be less pressure on the earth.
 A b c d
2. Unless we leave a bowl of water under the sun, it will evaporate.
 A b c d
3. If we continue to use fuels at the current rate, we would soon have to face a fuel crisis.
 A b c d
4. If I am 10 centimeters taller, I would play basketball.
 A b c d
5. If the doctors could find in the remedy, a lot of people would be saved.
 A b c d
6. If she bought that house now, she ran out of money.
 A b c d
7. What you would do if you could speak French well?
 A b c d
8. If I had known he is not at home, I wouldn’t have gone all the way to his house.
 A b c d
9. If I had known that the road were flooded, I would never have taken that way.
 A b c d
10. If I were you, I will go to the dentist’s and have the tooth checked.
 a b c d
Exercise 11: Rewrite the following sentences
We can’t go out because he has to study for his exam. => If ..
She is lazy so she can’t pass the exam. => If
He will pay me tonight; I will have enough money to buy a car. => If 
He smokes too much; that’s why he can’t get rid of his cough. => If..
She is very shy, so she doesn’t enjoy the party. => If .
He doesn’t take any exercises. He is so unhealthy => If .
Study hard or you won’t pass the exam. => If ..
Don’t be impatient or you will make mistakes. => If .
I didn’t eat lunch, I feel hungry now. => If I...
If you want my advice, I wouldn’t buy it => If I  .
I only come if they invite me. => Unless...
He didn’t revise all his lessons, he failed the exam. => If he ..
 20. Leave me alone or I’ll call the police. => Unless.
Exercise 12: One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them.
1. If we will reduce the speed of population growth, there will be less pressure on the earth.
2. Unless we leave a bowl of water under the sun, it will evaporate.
3. If we continue to use fuels at the current rate, we would soon have to face a fuel crisis.
4. If I am 10 centimeters taller, I would play basketball.
5. If the doctors could find in the remedy, a lot of people would be saved.
6. If she bought that house now, she ran out of money.
7. What you would do if you could speak French well?
8. If I had known he is not at home, I wouldn’t have gone all the way to his house.
9. If I had known that the road were flooded, I would never have taken that way.
10. If I were you, I will go to the dentist’s and have the tooth checked.
Exercise 13: 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) that 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 come 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/am/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.
21) If she (come/comes/came/had come) late again, she’ll lose her job.
22) I’ll let you know if I (find/finds/found/had found) out what’s happening.
23) If we (live/lived/would live/had lived) in a town, life would be better.
24) I’m sure he wouldn’t mind if we (arrive/arriving/arrived/had arrived) early.
25) We (will phone/would phone/phoned/had phoned) you if we have time.
26) If I won the lottery, I (gave/had given/will give/would give) you half the money.
27) It (will/would/can/may) be a pity if she married Fred.
28) If I’m free on Saturday, I (to go/could go/went/can go) to the mountains.
29) She (will has/had/will have/have) a nervous breakdown if she goes on like this.
30) I know I’ll feel better if I (will stop/stopped/stop/had stopped) smoking.
31) If I (am/were/will be/had been) you, I would help him.
32) I could have understood him if he (speaks/spoke/had spoken/would speak) more slowly.
33) 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.
34) He’s waiting for his mother to come back from Chicago. If his mother (come/comes/will come/came) home, he (will has/will have/has/had) a lot of presents.
35) He wanted to buy some Christmas presents but he couldn’t. If he (afforded/affords/had afforded/would afford) to buy, his children (are/were/would have be/would have been) very happy to greet a new year.
36) The kitchen will look better if we (have/had/had had/would have) red curtains.
37) If I knew his address, I (go/will go/would go/went) round and see him.
38) If you (hadn’t been/weren’t/aren’t/wouldn’t be) so busy, I would have shown you how to play.
39) It (will be/would be/were/been) quicker if you use a computer.
40) If we have some eggs, I (made/makes/will make/would make) you a cake.
ĐÁP ÁN MỘT SỐ BÀI TẬP:
EX4: 1.A 2.D 3.A 4.A 5.B 6.A 7. B 8.D 9.C 10. D 11.A 12.D 13.C 14.D 15.C
EX 6: 1.A 2.C 3.C 4.A 5.B 6.D 7.C 8.A 9.B 10.B 11.D 12.C 13.C 14.C 15.A 16.B 17.D 18.D 19.B 20.D 21C 22.B 23.C 24.C 25.D 26.D 27.C 28.C 29.A 30.C 31.B 32.C 33.A 34.B 35.B 36.D 37.B 38.D 39.C
Good luck to you!
Created by: Jonathan Jackson James ♥