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BÀI TẬP CÂU ĐIỀU KIỆN CÓ ĐÁP ÁN
Bài 1. Chia động từ trong ngoặc.
1. If they (listen) carefully, they might hear the woodpecker.
2. If I had lain down on the sofa, I (fall) asleep.
3. Ngoc could have worked as a model if she (be) taller.
4. The soil (not/dry out) if you water the plants regularly.
5. If you (give) the young boy this stick, he’d hurt himself.
6. We (not/take) the wrong tram if Dzung had asked the policewoman.
7. If the cat hides in the tree, the dog (not/find) it.
8. The students would have solved the problem if they (use) their textbooks.
9. If he washed his feet more often, his girlfriend (visit) him more often.
10. Manh (read) the newspaper if he went by train.
Đáp án
1. listened; 2. could have fallen; 3. had been; 4. won’t dry out; 5. gave;
6. wouldn’t have taken; 7. won’t find; 8. had used; 9. would visit; 10. would read
Bài 2. Hoàn thành câu với từ cho sẵn (chú ý chia động từ)
1. If/ you/ mix/ red/ blue/ get / purple.
2. If/ Arsenal/ win/ they/ be/ top/ the league.
3. It /rain/ we / cancel / the match.
4. You / take / first bus/ you/will/ get /there on time.
5. You / need more helpers/ I /can try / get some time off work.
6. Mary might / deliver your parcel / you /ask /her.
7. I / were / 20/ I would/ travel/ world
8. Jim / lent / us / car / we / could / go / party.
9. We / would / save £3.50 a day / we didn’t / eat any lunch.
10. Burglars/ broke/ into my house/ they / find any money.
Đáp án
1. If you mix red and blue, you get purple.
2. If Arsenal wins, they’ll be top of the league.
3. If it rains, we will cancel the match.
4. If you take the first bus, you’ll get there on time.
5. If you need more helpers, I can try and get some time off work.
6. Mary might deliver your parcel if you ask her.
7. If I were 20, I would travel the world.
8. If Jim lent us his car, we could go to the party.
9. We would save £3.50 a day if we didn’t eat any lunch.
10. If burglars broke into my house, they wouldn’t find any money.
Bài 3. Hoàn thành câu với từ cho sẵn
1. If we meet at 9:30, we (to have) plenty of time.
2. Lisa would find the milk if she (to look) in the fridge.
3. The zookeeper would have punished her with a fine if she (to feed) the animals.
4. If you spoke louder, your classmates (to understand) you.
5. Dan (to arrive) safe if he drove slowly.
6. You (to have) no trouble at school if you had done your homework.
7. If you (to swim) in this lake, youll shiver from cold.
8. The door will unlock if you (to press) the green button.
9. If Mel (to ask) her teacher, hed have answered her questions.
10. I (to call) the office if I was/were you.
Đáp án:
1. will have; 2. looked; 3. had fed; 4. would understand; 5. would arrive
6. would have had; 7. swim; 8. press; 9. had asked; 10. would call
Bài 4. Hoàn thành câu với từ cho sẵn
1.If it (to be) warmer, we (to go) swimming.
2. My parents (to buy) this house if the man (not/to sell) it to someone else.
3. If he (not/to fail) his driving test, his parents (to lend) him their car.
4. If my uncle (to tell) me the way to his office, I (not/to arrive) so late.
5. She (to be) at the airport if she (to read) the message carefully.
6. Lucy (not/to hurt) her foot if she (not/to drop) the old box on it.
7. If you (to use) a sharp knife, you (not/to cut) yourself.
8. If Victoria (to celebrate) her birthday at home, I (to bring) her some flowers.
9. We (to take) the train to Edinburgh if it (to run) on time.
10. If Max (not/to forget) his schoolbag, he (to give) you your USB flash drive.
Đáp án
1. If it had been warmer, we would have gone swimming.
2. My parents would have bought this house if the man had not sold it to someone else.
3. If he had not failed his driving test, his parents would have lent him their car.
4. If my uncle had told me the way to his office, I would not have arrived so late.
5. She would have been at the airport if she had read the message carefully.
6. Lucy would not have hurt her foot if she had not dropped the old box on it.
7. If you had used a sharp knife, you would not have cut yourself.
8. If Victoria had celebrated her birthday at home, I would have brought her some flowers.
9. We would have taken the train to Edinburgh if it had run on time
10. If Max had not forgotten his schoolbag, he would have given you your USB flash drive.
Bài 5: Cho dạng đúng của động từ trong ngoặc:
1. If I see him, I _____ (give) him a gift.
2. If I had a typewriter, I _____ (type) it myself.
3. If I had known that you were in hospital, I _____ (visit) you.
4. You could make better progress if you _____ (attend) class regularly.
5. If I _____ (know) his telephone number, I’d give it to you.
6. If you _____ (arrive) ten minutes earlier, you would have got a seat.
7. If he worked more slowly, he _____ (not make) so many mistakes.
8. I shouldn’t drink that wine if I _____ (be) you.
9. If I _____ (find) a cheap room, I will stay a fortnight.
10. A lot of people _____ (be) out of work if the factory closed down.
11. I (have) ………….. plenty of money now if I (not/spend) ………… so much yesterday.
12. If someone (give) …………….you a boat, what you (do) …………… ?
13. If you...........(press) CTRL + S, you...........(save) the file.
14. The children...........(be) happy if he...........(teach) them English.
15. If she...........(buy) a new hard disk, she...........(not/ lose) all data.
Đáp án:
1. will give;
2. would type;
3. would have visited ;
4. attended;
5. knew;
6. had arrived;
7. wouldnt make;
8. were;
9. find;
10. would be;
11. would have/ hadnt spent (ĐK hỗn hợp);
12. gives/ what will you do;
13. press/ save (hoặc will save);
14. would be/ taught;
15. had bought/ wouldnt have lost;
Bài 6: Bài tập chuyển sang câu điều kiện có đáp án.
1. Keep silent or you’ll wake the baby up.
→ If you dont keep silent, you will wake the baby up.
2. Stop talking or you won’t understand the lesson.
→ If…………………………………….....….…….
3. I don’t know her number, so I don’t ring her up.
→If…………………………………….....….……..
4. I don’t know the answer, so I can’t tell you.
→ If …………………………………………….………..
5. We got lost because we didn’t have a map.
→ If …………………………………….……..…….……
6. Susan felt sick because she ate four cream cakes.
→……………………………………………..……
7. Without this treatment, the patient would have died.
→……………………………………….….…...
8. He lost his job because he was late every day.
→………………………………………………...……
9. Peter is fat because he eats so many chips.
→……………………………………………………...…..
10. Robert got a bad cough because he started smoking cigarettes.
→………………………………..…..
Đáp án tham khảo (ngoài ra còn nhiều cách viết sử dụng từ ngữ khác nhau, nhưng nghĩa là không thay đổi)
2. If you keep talking, you wont understand the lesson.
3. If I know her number, I will ring her up.
4. If I know the answer, I will tell you.
5. If we had had a map, we wouldnt have got lost.
6. If Susan hadnt eaten four cream cakes, she wouldnt have felt sick.
7. If we hadnt had this treatment, the patient would have died.
8. If he hadnt been late every day, he wouldnt have lost his job.
9. If Peter ate less chips, he wouldnt be fat.
10. If Robert hadnt started smoking cigarettes, he wouldnt have got a bad cough.
Bài 7: Chọn đáp án đúng.
1. I would have visited you before if there _____ quite a lot of people in your house.
A. hadnt                  
B. hadnt been              
C. wouldnt be                  
D. wasnt
2. If you had caught the bus, you _____ late for work.
A. wouldnt 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/ hadnt lied                
B. would be/ didnt lie
C. will be/ dont lie                                    
D. would be/ hadnt 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 wouldnt have given them all that money if we _____ her to.
A. wouldn’t advise                                
B. wont advise
C. hadnt advised                                
D. didnt advise
9. If the tree hadnt 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 werent 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
Đáp án:
1 - B
2 - A
3 - A
4 - B
5 - D
6 - A
7 - B
8 - C
9 - A
10 - B
11 - A
12 - B
13 - C
14 - D
15 - A
16 - B
17 - C
18 - B
19 - A
20 - B
Bài 8: Chọn đáp án đúng
1. If she …………… the lottery last year, She ………… rich now.
A. have won/would be       
B. had won/would be
C.won/would be                 
D. wins/will be
2. If I …………… the homework last night, I…………… bonus today.
A. had done/would get       
B. had done/would have got
C. done/would get             
D. does/will get
3. If we had played this game yesterday, we…………… a lot of money now.
A. will have                     
B. may have
C. would have had         
D. would have
4. If it ……………… last night, it would be cold today.
A. had rained                 
B. rained
C. have rained             
D. was raining
5. If she …………… to me, she ……………… in trouble right now.
A. had listened/would be           
B. had listened/would have be
C. had listened/would not be     
D. A & B
6. If it had rained one hour ago, the streets ………… wet now.
A. would have be                     
B. will be
C. be                                       
D. would be
7. If I ………………. to the beach yesterday, I would be tired today.
A. have gone                   
B. goes
C. had gone                     
D. A & B
8. If they had gone to school yesterday, they ……….. to the museum now
A. would go                   
B. will go
C. could go                   
D. A&C
9. If he had done exercise last night, he ……… soccer right now.
A. will play             
B. can play
C. plays               
D. could play.
10. If Nina had not gone out last week, she ……………… die now.
A. will         
B. would         
C. could       
D. B&C
Đáp án:
1 - B
2 - A
3 - D
4 - A
5 - A
6 - D
7 - C
8 - D
9 - D
10 - D
Bài 9: Điền vào chỗ trống
1. If you take my advice, you ........................ (be) happy.
2. What would you do if you ........................ (be) me?
3. If you ........................ (lend) me some books I will give them back in two weeks.
4. I ........................ (send) her a letter if I had found her address.
5. She ........................ (not/steal) the bread if she hadnt been hungry.
6. If she ........................ (come) here I will tell her about the film.
7. I will be unhappy if you ........................ (leave) me.
8. If you hadnt been so crazy you ........................ (not/buy) this expensive house.
9. If the sun ........................ (shine) I will go to the beach.
10. If I ........................ (win) the lottery I would leave my country.
Đáp án:
1. will be 
2. were 
3. lend 
4. would have sent
5. would not have stolen / wouldnt have stolen
6. comes 
7. leave
8. would not have bought / wouldnt have bought
9. shines 
10. Won
Bài 10: Điền vào chỗ trống
1. ............ we ............ (have) enough time if we wanted to see the castle?
2. In case you ............ (buy) a car, will you teach me to drive?
3. If I............ (not be) in a hurry, I wouldnt have made so many mistakes.
4. She wont finish it on time if she ............ (not start) right now.
5. She ............ (get angry) if you had told her.
6. On condition that they ............(support) our product, they would get a discount.
7. Even if I ............(ask) him, he wont come.
8. Had I driven slowly, I ............(not crash)
9. It will be a disaster unless they ............ (help) us.
10. If you ............ (have) something to eat, you wouldnt have felt sick.
11. I wouldnt risk it if I ............ (be) you.
12. She would get fat if she ............ (not stop) eating.
13. The chicken wasnt good. It ............(taste) better if you had put some spices on it.
Đáp án:
1 - Would ... have 
2 - buy
3 - had not been
4 - does not start
5 - would have got 
6 - supported
7 - ask
8 - would not have crashed
9 - help
10 - had had
11- were
12 - did not stop
13 - would have tasted
 
 
 
 
 
Bài 11: Tìm lỗi sai
1. What do (A) you do (B) if you won the first (C) prize of the lottery?
2. Would people be able (A) to fly (B), if they have (C) feathers instead of (D) hair?
3. George now (A) wishes he hasn’t (B) broken (C) his encouragement with (D) Marian.
4. If Peter had been more (A) careful (B), he wouldn’t break (C) the camera I lent (D) him.
5. He wouldn’t have able (A) to pass (B) the test if his English hadn’t been (C) good enough (D).
6. If a drop (A) of oil is placed (B) in a glass of water, it would (C) float on (D) the surface.
Đáp án
1. A (do => would)
4. C (wouldn’t break => wouldn’t have broken)
2. C (have => had)
5. A (have able => have been able)
3. B (hasn’t => hadn’t)
6. C (would => will)
Bài 12: Hoàn chỉnh các câu sau, sử dụng điều kiện loại 2
1. What/ happen/ if/ water pollution/ stop?
_____________________________________________________
2. We/ be/ happy/ if/ air pollution/ the world/ be/ a/ better place?
_____________________________________________________
3. If/ there/ be/ no more pollution/ the world/ be/ a better place?
_____________________________________________________
4. If/I/ be/ you/I/ take/ these bottles/ the bottle bank.
_____________________________________________________
5. If/ people/ not really care/ the environment/ they/ not try/ save it.
_____________________________________________________
6. The river/ not be/ so polluted/ if/ factories/ not dump/ waste/ it.
_____________________________________________________
7. We/ be/ less worried/ if/ oil spills/ not have/ such destructive effects.
_____________________________________________________
8. If/ we/ destroy/ the ozone layer/ what/ save/ us/ the UV rays?
_____________________________________________________
Đáp án:
1. What would happen if water pollution stopped?
2. We would be happy if air pollution was the only problem.
3. If there was no more pollution, would the world be a better place?
4. If I were you, I would take these bottles to the bottle bank.
5. If people didn’t really care about the environment, they wouldn’t try to save it.
6. The river wouldn’t be so polluted if factories didn’t dump waste into it.
7. We would be less worried if oil spills didn’t have such destructive effects.
8. If we destroyed the ozone layer, what would save us from the UV rays?
Bài 13. Cho dạng đúng của động từ trong ngoặc với câu điều kiện loại 1.
1. If I (study), I (pass) the exams.
2. If the sun (shine), we (walk) into town.
3. If he (have) a temperature, he (see) the doctor.
4. If my friends (come), I (be) very happy.
5. If she (earn) a lot of money, she (fly) to New York.
6. If we (travel) to Hanoi, we (visit) the museums.
7. If you (wear) sandals in the mountains, you (slip) on the rocks.
8. If Giang (forget) her homework, the teacher (give) her a low mark.
9. If they (go) to the disco, they (listen) to loud music.
10. If you (wait) a minute, I (ask) my parents.
Đáp án
1. study/will pass; 2. shines/will walk; 3. has/must see; 4. come/will be; 5. earns/will fly; 6. travel/will visit; 7. wear/may slip; 8. forgets/will give; 9. go/have to; 10. wait/will ask
Bài 14. Cho dạng đúng của động từ trong ngoặc với câu điều kiện loại 2
1. If I (come) home earlier, I (prepare) dinner.
2. If we (live) in HCMC, my boyfriend (visit) us.
3. If Tung and Thanh (be) older, they (play) in our football team.
4. If he (be) my friend, I (invite) him to my birthday party.
5. If Xuan (study) harder, she (be) better at school.
6. If they (have) enough money, they (buy) a new car.
7. If you (do) a paper round, you (earn) a little extra money.
8. If Minh (get) more pocket money, he (ask) Lam out for dinner.
9. If we (win) the lottery, we (fly) to London.
10. If I (meet) Brad Pitt, I (ask) for his autograph.
Đáp án
1 - came/would prepare; 2 - lived/would visit; 3 - were/would play; 4 - were/would invite; 5 - studied/would be; 6 - had/could buy; 7 - did/could earn; 8 - got/could ask; 9 - won/would fly; 10 - met/would ask;
Bài 15: Hoàn thành các câu với nghĩa không đổi
1. Vegetarians don’t eat meat.
=> If you’re a vegetarian, ________________________________
2. People who live in a cold country don t like hot weather.
=> If you live _________________________________________
3. Teachers have to work very hard.
=> If you’re a teacher, __________________________________

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