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<span class='text_page_counter'>(1)</span>CONDITIONAL SENTENCES EXERCISES I. Choose the correct answer : 1. Please ________ you hand if you have any question. A. Rise B. raise C. put D. set Jack will miss his bus ________ he leaves now. A. If B. unless C. when D. until He ________ his eyes if he reads in bad light. A. Ruined B. would ruin C. ruins D. will ruin Sally ________ the phone if she were in the room now. A. Will answer B. shall answer C. would answer D. answered 5. I ________ a student in this class if English ________ my native language. A. Won’t be/is B. wouldn’t be/were C. won’t be/were D. wouldn’t be/is 6. If I ________ you were coming, I’d have met you at the station. A. Knew B. has known C. had known D. would know 7. But for your help, we ________ in trouble. Will be B. would be C. had been D. would have been If I ________ the competition, I ________ on a world cruise. Win/will go C. had won/would have gone won/would go D. won/would have gone It would have been a good crop ________ through. If a storm didn’t sweep C. would a storm not have swept Had a storm not swept D. didn’t a storm sweep If it ________ for their good goal keeper, Liverpool ________ the match. Weren’t/would lose C. weren’t/would have lost Hadn’t been/would have lost D. hadn’t been/would lose If the oceans ________ of fresh water, there ________ plenty of water to irrigate all the deserts on earth. Is/will be C. had been/would have been Were/would be D. would be/were If you ________ to me, you wouldn’t have got so much trouble. Listened B. would listen C. had listened D. would have listened If you don’t know how to spell a word, you ________ look it up in the dictionary. Must B. will C. should D. ought If I ________ the bus this afternoon, I’ll get a taxi instead. Miss B. will miss C. missed D. had missed We’ll have to go without John if he ________ soon. Won’t arrive B. will arrive C. arrives D. doesn’t arrive They ________ your money if you haven’t kept your receipt. Won’t refund B. didn’t refund C. no refund D. not refund If I make some coffee, ________ the cake ? Do you cut B. will you cut C. are you cutting D. don’t you cut If you ________ your homework, I ________ you watch TV. Won’t do/let B. did/won’t let C. don’t do/won’t let D.won’t do/don’t let If you want to see clearly, you ________ your glass. Wear B. will wear C. would wear D. must wear If you’re scared of spiders, ________ into the garden. Won’t go B. you won’t go C. don’t go D. not go If I ________ time tonight, I ________ the novel I’m reading. Will have/finish C. have had/will finish Have/will finish D. have/have finished.

<span class='text_page_counter'>(2)</span> If it ________ next week, we ________ plant the vegetables. Rains/won’t be able to C. will rain/aren’t going to Rains/aren’t going to D. will rain/don’t plan Get me a glass of lemonade if you ________ to the kitchen. Go B. will go C. have gone D. went ________ your computer if I’m careful ? Will I use B. Do I use C. Use I D. Can I use I ________ angry if it ________ that you are wrong. Will/turns out C. won’t be/turned out Am/will turn out D. will be/turns out If you ________ this switch, the computer ________ on. Press/comes C. press/can come Will press/comes D. have pressed/will come If you ________ with the computer, I’ll put it away. Will finish B. have finished C. had finished D. finished If Matthew is going to a job interview, he ________ a tie. Will wear B. can wear C. should wear D. might wear If the weather ________, we’ll have to camp somewhere else. Would get worse B. might get worse C. get worse D. should get worse If it ________ very hard, the streets flood. Rains B. will rain C. is raining D. would rain ________ you work harder, you are going to pass your exams. If B. Unless C. Although D. Because If it ________, we’ll have the party outside. Wouldn’t rain B. doesn’t rain C. didn’t rain D. won’t rain If you want to go skiing in the south, ________ to Black Mountain. You go B. you’ll go C. go D. went If I ________ John tonight, I ________ him my plans. Saw/told B. will see/will tell C. see/will tell D. will see/tell I’m not an astronaut. If I ________ an astronaut, I ________ my camera with me on the rocket ship. Am/will take C. were/had taken Was/would taken D. was/would have taken Don’t throw aerosol into fire. An aerosol ________ if you ________ it into a fire. Will be exploded/throw C. explodes/will throw Would explode/threw D. can explode/throw That sounds like a good offer. I ________ it if I ________ you. Had accepted/were C. would accept/were Will accept/am D.accepted/were Nora is using my car right now. If she ________ it back in time, you’re welcome to borrow it. Brought B. would bring C. will brings D. brings If energy ________ inexpensive and unlimited, many things in the world would be different. Is B. was C. had been D. would be If you ________ all of my questions, I ________ anything to help you. Don’t answer/can’t do C. wouldn’t answer/can’t do Didn’t answer/won’t do D. wouldn’t answer/couldn’t do If I ________ wings, I ________ take an airplane to fly home. Have/won’t have to C. have/will have to Had/wouldn’t have to D. had/didn’t have to If we ________ serious about pollution, we ________ more money on research..

<span class='text_page_counter'>(3)</span> Had been/spent B. were/had spent C. were/would spend D. are/will spend What would Tom do if he ________ the truth ? Would know B. has know C. knows D. knew If someone ________ into the store, smile and say, “May I help you ?” Comes B. came C. will come D. would come If I weren’t working for an accounting firm, I ________ in a bank. Work B. will work C. have worked D. would be working If the world’s tropical forests continue to disappear at their present rate, many animal species ________ extinct. Became B. would have become C. will become D. would become ________ been diverted, they would have arrived early. Hadn’t the plane B. Had the plane not C. The plane had not D. the plane not had I won’t lend you this money ________ to pay it back. In case you promise C. if you promise If you didn’t promise D. unless you promise If I had known how difficult the job was, I ________ it. Won’t take C. wouldn’t take wouldn’t have taken D. couldn’t have taken Do you think there would be less conflict in the world if all people ________ the same language ? Speak B. will speak C. spoke D. had spoken The teacher was absent today, so class was cancelled. If she ________ absent again tomorrow, class ________ tomorrow, too. Is/will cancel C. was/would be cancelled Is/will be cancelled D. was/would cancel If you ________ to my advice in the first place, you ________ in this mess right now. Listen/won’t be C. will listened/wouldn’t be Listened/wouldn’t have been D. had listened/wouldn’t be If Alice had come sooner, he ________ dinner with us. Could have eaten C. was eating Would being eaten D. could eat The world ________ a better place if we had known a hundred years ago what we know today about the earth’s environment. Will be B. was C. should be D. might be If water is heated to 212 degrees F, ________ as steam. It can boil and escape C. it boils and escapes It is boiled and escaped D. it would boil and escape ________ in my seventies and rather unfit, I might consider taking up squash. Was I not B. Were I not C. Weren’t I D. If I were If you ________, I would have brought my friends over to your house this evening, but I didn’t want to bother you. Had studied B. hadn’t been studying C. studied D. didn’t study You will become ill ________ you stop working so hard. Until B. if B. when D. unless If he _______ for the revision session, he might have no difficulty doing the test now. Was to come B. came C. had come D. would come If people drove more carefully, ________ fewer accidents. There will be B. there are C. there would be D. there have been If I were you, I ________ that coat. It’s much too expensive. Won’t buy B. don’t buy C. wouldn’t buy D. didn’t buy.

<span class='text_page_counter'>(4)</span> If I could speak Spanish, I ________ next year studying in Mexico. Will spend B. had spent C. would have spent D. would spend It would have been a much more serious accident ________ fast at the time. Was she driving C. had she been driving She had driven D. if she drove We ________ the game if we’d had a few more minutes. Could have won B. won C. had won D. will won I ______ William with me if I had known you and he didn’t get along with each other. Hadn’t brought B. wouldn’t have brought C. didn’t bring D. won’t bring The lecturer last night didn’t know what he was talking about, but if Dr. Manson ________ I would have listened carefully. Lectured B. had been lecturing C. was lecturing D. would lecture ________ interested in that subject, I would try to learn more about it. A. If I am B. Should I C. I was D. Were I If I ________ the same problems you had as a child, I might not have succeeded in life as well as you have. Have B. would have C. had had D. should have I ________ you sooner had someone told me you were in hospital. Would have visited C. had visited Visited D. visit ________ more help, I could call my neighbor. Needed B. Should I need C. I have needed D. I should need ________ then what I know today, I would have saved myself a lot of time and trouble over the years. If I know B. If I would know C. Did I know D. Had I known Do you think there would be less conflict in the world if all people ________ the same language ? Speak B. will speak C. spoke D. had spoken If you can give me one good reason for your acting like this,_____ this incident again. I don’t mention C. I never mention I will never mention D. will I never mention I didn’t know you were oversleep. Otherwise, I ______ so much noise when I came in. Didn’t make B. wouldn’t have made C. won’t made D. don’t made Unless you ________ all of questions, I can’t do anything to help you. Answered B. answer C. would answer D. are answering Had you told me that this was going to happen, I ________ it. Would never have believed C. don’t believe Hadn’t believed D. can’t believe If Jake ________ to go on the trip, would you have gone ? Doesn’t agree B. didn’t agree C. hadn’t agree D. wouldn’t agree If you ________, I would have brought my friends over to your house this evening to watch TV, but I didn’t want to bother you. Had studied B.studied C. hadn’t been studied D. didn’t study ________ you, I’d think twice about that decision. It could be a bad move. If I had been B. Were I C. Should I be D. If I am If my candidate had won the election, I ________ happy now. Am B. would be C. was D. can be Put the verbs into correct form : If you (find) ________ a wallet in the street, what would you do with it ? I must hurry. My friend (be) ________ annoyed if I (not/be) ________on time. If I (be) ________ a bird, I (not/want) ________ to live my whole life in a cage..

<span class='text_page_counter'>(5)</span> I didn’t realize that Gary was in hospital. If I (know) ________ he was in hospital, I (go) ________ to visit him. If you (pour) ________ oil on water, it (float) ________. If the phone (ring) ________, can you answer it ? If I (have) ________ wings, I (not/have to) ________ take an airplane to fly home. Ken got to the station in time to catch his train. If he (miss) ________ it, he (be) ________ late for his interview. A : What shall we do tomorrow ? B : Well, if it (be) ________ a nice day, we (go) ________ to the beach. A : You look tired B : Well, if you (not/wake) ________ me up in the middle of the night, I (not/be) ________ tired. This soup isn’t very good. It (taste) ________ better if it (not/be) ________ so salty. Unfortunately, I didn’t have my address book with me when I was in New York. If I (have) ________ your address, I (send) ________ you a postcard. I think there are too many cars. If there (not/be) ________ so many cars, there (not/be) ________ so much pollution. A : I think I left my watch at your house. Have you seen it ? B : No, but I’ll have a look. If I (find) ________ it, I (tell) ________ you. Mark and Carol are expecting us. They (be) _____ disappointed if we (not/come) ____. The accident was your fault. If you (drive) _____ more carefully, it (not/happen) _____. If you (have)_____enough money to go anywhere in the world, where (you/go)______? This box has got to be in Chicago tomorrow. I’m sure if I (send) ________ it today by express mail, it (arrive) ________ in time. People (be) ________ able to fly if they (have) ________ feathers instead of hair. If she (leave) ________ the fish there, the cat (get) ________ it. If you slept under a mosquito net, you (bite) ________ so often. If we (have) ________ more rain, our crops (grow) ________ faster. Ice (turn) ________ to water if you (heat) ________ it. If we (work) ________ all night, we (finish) ________ in time, but we have no intention of doing it. If we (have)________a submarine now, we (use) ________ it to investigate the seabed. Were he ten years younger, he (take) ________ part in the voyage around the world. Should you come late, they (not/let) ________ you in. He might get rid of his cough if he (not/smoke) ________ so much. If someone (give) ________ you a boat what you (do) ________ ? Now we’ve lost ! If you (write) ________ down Mary’s directions, this (not/happen) ________. Why don’t we emigrate ? If we (live) ________ in Australia, at least the weather (be) ________ better ! If my uncle (not miss) ________ the train, he (be) ________ here by now. Thanks to Dr. Jones, I’m still alive ! If I (not/be) ________ for her, I (be) ________ dead for certain. I’m sorry I can’t lend you any money. You know that if I (have) ________ it, I (lend) ________ it to you. Don’t be afraid. If you (touch) ________ the dog, it (not/bite) ________. In those days, if you (have) ________ a job, you (be) ________ lucky. It’s always the same ! If I (decide) ________ to leave the office early, my boss (call) ________ me after I’ve left ! What a terrible thing to happen ! Just think, if we (not/miss) ________ the plane, we (kill) ________ in the crash. Did you enjoy your meal ? If you (finish)______eating, I (clear away)______the plates. If the sun (shine) ________, we (go) ________ for a walk. The campfire (not/cancel) ________ if it (not/rain) ________ last night. But for our parents, we (never/be) ________ successful in life..

<span class='text_page_counter'>(6)</span> If I (not/have) ________ my wallet at home this morning, I (have) ________ money for lunch now. It is too bad lam isn’t here. If he (be) ________ here, he (know) ________ what to do. If my grandfather (be) ________ still alive, he would be a hundred today. I (offer) ________ to give you a lift if I had my car here. Where (you/choose) ________ if you could live anywhere in the world ? If you (drive) ________ from London to Glasgow, which way would you go ? If I (live) ________ out of town, I (take) ________ up the garden. We (not/have) ________ any money if we (not/work) ________. I (not/mind) ________ living in England if the weather (be) ________ better. If I were you, I (not/wait) ________, I (go) ________ now. If we (have) ________ more reliable car, we (drive) ________ to Spain rather than fly. If Mr. Morgan (be)______still head teacher, he (not/permit)_______such bad behavior. I didn’t go into business with Sam. If I (go) ________ into business with him, I (become) ________ a success. We got to the station in time to catch the train. If we (miss) ________ it, we (be) ________ late for the meeting. Mary and I weren’t able to go on a honeymoon. We (can/go) ________ away if my father (not/get) ________ sick. I took a taxi to the hotel but the traffic was very bad. It (be) ________ quicker if I (walk) ________. It’s good that you reminded me about Ann’s birthday. I (forget) ________ if you (not/remind) ________ me. The view was wonderful. If I (have) ________ a camera, I (take) ________ some photographs. We (may/be) ________ at the airport four hours, if we (not know) ________ that the flight was delayed. If you (tell) ________ me you needed money, I (can/lend) ________ you some. What (happen) ________ if I press this button ? What (you/do) ________ if you (be) ________ a millionaire. Write a sentence with if for each situation : You should take more exercise because that’s the way to get fit.  ……………………………………………………………………………………………… The accident happened because the driver in front stopped so suddenly.  ……………………………………………………………………………………………… I haven’t got a key, so I can’t get in.  ……………………………………………………………………………………………… Throw a stone into water and it sinks.  ……………………………………………………………………………………………… I didn’t have any breakfast, and now I’m hungry.  ……………………………………………………………………………………………… Road travel is cheaper than rail travel in this country, so we have lots of traffic jams.  ……………………………………………………………………………………………… Martin failed his driving test last week. He was very nervous and that’s why he failed.  ……………………………………………………………………………………………… You may want a chat, so just give me a ring.  ……………………………………………………………………………………………… I didn’t finish my report yesterday, so I can’t begin a new project today.  ……………………………………………………………………………………………… The wind is blowing hard, so I won’t take the boat out for ride.  ……………………………………………………………………………………………… I’m sorry I disturbed you. I didn’t know you were busy..

<span class='text_page_counter'>(7)</span>  ……………………………………………………………………………………………… It might rain. If it does, everyone can eat inside.  ……………………………………………………………………………………………… We don’t visit you very often because you live so far away.  ……………………………………………………………………………………………… Margaret wasn’t injured in the crash because she was wearing a seat belt.  ……………………………………………………………………………………………… I have to work tomorrow evening, so I can’t meet you.  ……………………………………………………………………………………………… I don’t know anything about plumbing, so I didn’t fix the leak in the sink myself.  ……………………………………………………………………………………………… Is Matthew going to enter the race ? He’ll probably win it.  ……………………………………………………………………………………………… We should have bought that picture five years ago because it would be quite valuable now.  ……………………………………………………………………………………………… I feel better now because you talked to me about my problems last night.  ……………………………………………………………………………………………… Carol didn’t answer the phone because she was studying.  ……………………………………………………………………………………………… She’s very thin, perhaps that’s why she feels cold so much.  ……………………………………………………………………………………………… He never polishes his shoes, so he never looks smart.  ……………………………………………………………………………………………… He can’t park near his office, that’s why he doesn’t come by car.  ……………………………………………………………………………………………… My house is guarded by two big dogs. That’s the only reason it isn’t broken into every night.  ……………………………………………………………………………………………… The flats are not clearly numbered, so it is very difficult to find anyone.  ……………………………………………………………………………………………… I don’t know her e–mail address, so I can’t tell you.  ……………………………………………………………………………………………… I can’t play football in this afternoon because I feel tired.  ……………………………………………………………………………………………… She works in the evening. She has no time to play with her children.  ……………………………………………………………………………………………… He hasn’t got a watch. He is always late for work.  ……………………………………………………………………………………………… I am not tall enough to join the basketball team.  ……………………………………………………………………………………………… He didn’t prepare for the interview, so he didn’t get the job.  ……………………………………………………………………………………………… We came home from our holiday early because we ran out of money.  ……………………………………………………………………………………………… I can’t take much exercise because I don’t have enough free time.  ……………………………………………………………………………………………… The house didn’t burn down because the fire brigade came immediately.  ……………………………………………………………………………………………… The men were wearing protective clothing, so they were all quite safe.  ……………………………………………………………………………………………….

<span class='text_page_counter'>(8)</span> People don’t realise how important it is to conserve energy, so they do nothing about it.  ……………………………………………………………………………………………… I took the job because I didn’t know how difficult it was.  ……………………………………………………………………………………………… My father didn’t earn much money, so life wasn’t easy for us.  ……………………………………………………………………………………………… Daniel really wanted to buy that book, but he didn’t have enough money.  ……………………………………………………………………………………………… There isn’t any truth in her allegations, so I won’t resign.  ……………………………………………………………………………………………… I was sick yesterday, so I didn’t go to class.  ……………………………………………………………………………………………… Because Alan never eats breakfast, he always overeats at lunch.  ……………………………………………………………………………………………… Peter didn’t finish unloading the truck because John didn’t help him.  ……………………………………………………………………………………………… Jack was late to his own wedding because his watch was ten minutes slow.  ……………………………………………………………………………………………… I don’t take the bus to work every morning because it’s always so crowded.  ……………………………………………………………………………………………… I didn’t bring extra money with me because you didn’t tell me we were going to dinner after the movie.  ……………………………………………………………………………………………… Sam didn’t know that highway 57 was closed so he didn’t taken an alternative route.  ……………………………………………………………………………………………… Because I lost my key, I had to pound on the door to wake my roommate when I got home last night.  ……………………………………………………………………………………………… I’m tired today because I went to bed late last night.  ……………………………………………………………………………………………… The wind is blowing hard, so I won’t take the boat out for a ride.  ……………………………………………………………………………………………… Write a new sentence with the same meaning. Use UNLESS in your sentence : You don’t get there in time if you don’t hurry.  ……………………………………………………………………………………………… We can’t do the job if we don’t get help.  ……………………………………………………………………………………………… You are allowed into the club only if you’re member.  ……………………………………………………………………………………………… I don’t like fish. I wouldn’t eat it if I wasn’t extremely hungry.  ……………………………………………………………………………………………… Don’t leave the TV on if you aren’t watching it.  ……………………………………………………………………………………………… The doctor will see you today only if it’s an emergency.  ……………………………………………………………………………………………… I wouldn’t have bought the picture if I didn’t like it.  ……………………………………………………………………………………………… You can’t get a driver license if you’re not at least eighteen years old.  ……………………………………………………………………………………………… I’m going to the party only if you go with me..

<span class='text_page_counter'>(9)</span>  ……………………………………………………………………………………………… The dog will attack you only if you move suddenly.  ……………………………………………………………………………………………… Make sentences with the same meaning by omitting if : If you should need more money, go to the bank before six o’clock.  ……………………………………………………………………………………………… If I were you, I wouldn’t do that.  ……………………………………………………………………………………………… If they had realized the danger, they would have done it differently.  ……………………………………………………………………………………………… If I were your teacher, I would insist you do better work.  ……………………………………………………………………………………………… If you should change your mind, please let me know immediately.  ……………………………………………………………………………………………… She would have gotten the job if she had been better prepared.  ……………………………………………………………………………………………… Your boss sounds like a real tyrant. If I were you, I would look for another job.  ……………………………………………………………………………………………… If you should need to reach me, I’ll be at the Hilton Hotel in Seoul.  ……………………………………………………………………………………………… I wouldn’t have known about your new job if I hadn’t talked to your mother.  ……………………………………………………………………………………………… If she were ever in trouble, I’d do anything I could do to help her.  ……………………………………………………………………………………………… Choose the best correct word or expression for each sentence : 1. Rachel will be pleased if/unless she passes her driving test. 2. You can use my car unless/as long as you drive carefully. 3. The bus won’t stop unless/providing you ring the bell. 4. You’d better take a coat if/in case it gets cold. 5. Don’t bother to ring me unless/in case it’s important. 6. Children are allowed to use the swimming pool unless/provided they are with an adult. 7. I’ll make myself an omelette when/if I get home tonight. 8. I don’t mind if you come in late unless/so long as you come in quietly. 9. You won’t have to leave unless/if you can pay your bill. 10. Write the name down in case/provided you forget it. 11. If anyone phones/will phone, tell them I’ll be/am back at 11:00. 12. I’ll phone you when/if I get home from work. 13. We can hire a minibus if there’ll be/there are enough people. 14. Brian looks very different now. When/If you see him again, you don’t/won’t recognize him. 15. If they will get/get married, they will probably move/probably move to France. 16. If you’ll leave/leave now, you’ll be/are home in two hours. 17. There won’t be/aren’t enough chairs if everybody will come/come. 18. Don’t worry if/when I’m late tonight. 19. You have to/will have to take a taxi home if you want/ will want to leave now. 20. If/When they don’t come soon, I’m not going to wait. II. Each sentence below contains an error. Underline it and write the correct answer in the space provided. 1. I said to Helen that if she works hard, she’d pass her exam. 1. _________.

<span class='text_page_counter'>(10)</span> 2. I wouldn’t mind living in Alaska if the weather would be better. 3. Were I to have a ship, I will travel around the oceans on earth. 4. If it hadn’t been for David, we would miss the bus 5. Yesterday if you didn’t lend me the money, I’d have gone to the bank. 6. Mr. Phong would work in London if he speaks English better. 7. If it hadn’t been raining, we would have been home by now. 8. Had I been late to work this morning, I missed the regular meeting. 9. I would bring you another unless you like this one. 10. If it hadn’t been for his encouragement, we would give up it. 11. Were I to know her address, I gave it to you. 12. If I have to fly, I would get very nervous, so I usually drive 13. If I will have to make a difficult decision, I always discuss it with my friends. 13. Unless we work harder, we will finish on time. 14. If a drop of oil is placed in a glass of water, it would float to the top. 15. Jack will win the election if he campaigned harder. 16. I think you shouldn’t do if it’s the right thing to do. 17. Unless we work harder, we will finish on time 18. We could have given you a lift if we’d know you were coming this way. 19. If Nick hadn’t come along, I don’t know what would happen.. 2. _________ 3. _________ 4. _________ 5. _________ 6. _________ 7. _________ 8. _________ 9. _________ 10. ________ 11. ________ 12. ________ 13. ________ 14. ________ 15. ________ 16. ________ 17. ________ 18. ________ 19. ________ 20. ________.

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