If-用法对比练习100题

If 用法对比练习100题1. a) _ it rains, the game will be played on time.b) _ I was twenty, I had never been away from my hometown.c) _ he were here, he couldnt help us.A. Even if B. Until C. Till D. Unless2. a) Im busy now. If I time, I a chat with you. b) If I time last night, I have a chat with you.A. have, will have B. had, would have C. had, should had D. had had, would have had3. (1)Youll miss the train _ you hurry up.(2)Youll miss the train _ you dont hurry up.A. if B. unless C. whether D. as4. (1)_ its raining , they are still working in the field. (2)Young _she is , she knows quite a lot. (3)Well make a trip even if (even though) the weather is bad. (4)_what happened , we would not mind. A. No matter B. Although C. even if D. as5. (1)_ this medicine, and you will be all right . (2)_ this medicine, you will be all right . (3)_ this medicine, it will cure you of your illness. A. To take B. Take C. Taking D. If you take BC/DD6. (1)It seemshe knew nothing about it(1)It seemshe is lying A. that as ifB. thatC. as ifD. and 7. (1)If it _ tomorrow, I wont go out seeing. A. rains B. will rain C. is going to rain D. is raining (2)If you _ me, I will give you some advice. A. listen to B. will listen to C. listen D. are listening8. (1)If it _ tomorrow, I wont go out seeing. (2)If it _ tomorrow, I wouldnt go out seeing. (3)Were it _ tomorrow, I wouldnt go out seeing. A. should rain B. to rain C. rains D. rained9. (1)If we work hard, we can overcome any difficulty, no matter _ great it is. (2)If we work hard, we can overcome any difficulty, _ great it is. (3)If we work hard, we can overcome any difficulty, _ difficulty it is. (4)If we work hard, we can overcome any difficulty, no matter _ difficult it is.A. what B. how C. however D. whatever 10. (1)There is only one English-Chinese dictionary in that book-shop. I wonder if you still want to buy _.A. it B. one C. another D. any(2)Will you see to _ that my children are taken good care of while I am away?A. me B. it C. yourself D. them1. (1)It depends on _ he has enough money.(2)_the sports meet will be held depends on the weather.A. When ever B. If C. Whether D. That2. (1)Fran is an honest girl; I say it, _ I dont like her. (2)Fran is an honest girl; I say it, _, I dont like her.A. even though B. as though C. even so D. as long as 3. (1)Time _, he shall go outing. (2)If time _, he shall go outing.A. permitted B. permits C. permitting D. would permit(1)When _ he come? I dont know, but when he _, Ill tell you.A. does, comes B. will, comes C. does, will come D. will, will come(1)When he _ is not known yet. But when he _, he will be warmly welcomed.(1)I dont know if she _, but if she _ I will let you know.A. comes, comes B. will come, will come C. comes, will come D. will come, comes4. (1)Who is it up _ decide whether to go or not? (2)Who did you go _ help the people in trouble? A. to to B. for for C. to for D. with to5. (1)_ from the hill, the park seems beautiful.(2)_ from the hill, youll find the park beautiful.(3)_ from the hill, and youll find the park beautiful. A. See B. Seen C. Seeing D. to be seen E. If you see6. (1)_ no subjunctive mood, English would be much easier. (2)_ no subjunctive mood, English would be much easier. A. If were there B. Were if there C. Were there D. Is there7. .(1)If you take five out of eight, three _.(2)Five out of eight _ three.(3)Take five from eight and the _ is three.A. remainder B. remains C. is remained D. leaves8. (1) Weather _, well go and pay a visit to your school. (2)If weather _, well go and pay a visit to your school. A. permits B. permitted C. permitting D. is permitted 9. (1)-Do you mind _ here? - Sorry, it isnt allowed. A. if I smoke B. smoking C. my smoking D. to smoke (2)Its very cold today. Would you mind _ the window?A. my closing B. closing C. if I close D. to close (3)Would you mind _ for me for f few minutes?A. wait B. your waiting C. waiting D. if you wait 20. (1)We dont knowhe will come unless told(1)We dont knowhe will come until told thatwhetherif nothow long1. (1)_, youd better stop quarrelling.(2)_, we cant be defeated.A. Unite B. United C. To unite D. If we unite2.(1)If it _ tomorrow, I wont go out seeing. A. rains B. will rain C. is going to rain D. is raining (2)If you _ me, I will give you some advice. A. listen to B. will listen to C. listen D. are listening3. 1) She didnt come back _ her mother went to bed. 2) She wont come back _ her mother asks her to. A. unless B. if C. until D. when4. (1) _ straight on and youll see a church. You wont miss it. (1) _ straight on, youll see a church. You wont miss it.A.Go B. Going C. If you go D. When going5. 1) _ we shall go for a picnic tomorrow is certain. 2) _ well go for a picnic tomorrow is uncertain. A. That B. If C. Whether D. What6. a) He would have a look at the bookstores_ he went to town.b) We decide to finish the work on time, _ happens.c) If we work with a strong will, we can overcome any difficulty, _ great it is.d) Ill give the book to_ likes English.A. whenever B. whoever C. whatever D. however7. a) If it this afternoon, well put off the sports meet.b) If it this afternoon, we would put off the sports meet.A. rain B. rains C. rained D. will rain8. a) Its necessary that you_ be present at the meeting.b) His father_ often have a walk after supper.c) I _ rather sleep than watch TV.d) If it_ rain tomorrow, he would not come.e) Youre late again. You _ have come five minutes earlier.A. should B. would C. ought 9. (1)It depends on _ he has enough money.(2)_the sports meet will be held depends on the weather.A. When ever B. If C. Whether D. That30. (1)If you _me, I will give you some advice. (2)If you _me, I should give you some advice.A. listened to B. will listen to C. listento D. are listeningto1. What would have happened _, as far as the river bank? (2)What would happen _, as far as the river bank?A. Bob had walked farther B. if Bob should walk farther C. had Bob walked fartherD. if Bob walked farther2. (1) _ he come, what _ you say to him?(2) _ he comes, what _ you say to him?A. Shouldwould B. Whenwould C. Ifwill D. Were todo3. (1)_ this medicine, and you will be all right . (2)_ this medicine, you will be all right .(3)_ this medicine, it will cure you of your illness. A. To take B. Take C. Taking D. If you take4. (1)I dont knowor not you will help me(1)I dont knowwill help me(1)I knowyou will help me thatifwhether who5. (1) _ we shall go for a picnic tomorrow is certain. (2) _ well go for a picnic tomorrow is uncertain. A. That B. If C. Whether D. What6. (1)I have a doubt _ he will succeed.(2)I have no doubt _ he will succeed. A. if B. whether C. that D. how7.(1)Its cloudy. It looks as if it _. A. is going to rain B. were going to rain C. would rain D. rained (2)When a pencil is partly in a glass of water, it looks as if it _. A. breaks B. has broken C. were broken D. had been broken 8. (1)His idea _ we should finish the work ahead of time was accepted. (2)His idea _ we are discussing was accepted.A. that B. whether C. if D. which 9. (1)Father promised_ I studied harder he would take me to Beijing next summer.(2)Father promised _he would take me to Beijing next summer if I studied harder.A. that B. if C. that if D. if that40. (1)Has it been decided_ they will hold the meeting tomorrow? (2)Has it been decided_ they will hold the meeting there? (3)Has it been decided_ they will hold the meeting there tomorrow? A. whether B. if C. where D. when1. (1) It looks _ the weather may turn out fine tonight. (2)The chemical teacher said, “do everything _I do .”A. as than B. as C. though D. as if (as though)2. If time _, Ill go to see my friend tomorrow. Time _, Ill go to see my friend tomorrow. A. permitted B. permits C. permitting D. permit3. (1)If it _ tomorrow, I wont go out seeing. (2)If it _ tomorrow, I wouldnt go out seeing. (3)Were it _ tomorrow, I wouldnt go out seeing. A. should rain B. to rain C. rains D. rained4. _ straight on and youll see a church. You wont miss it. _ straight on , youll see a church. You wont miss it.A. Go B. Going C. If you go D. When going5. (1) _ well have a meeting tomorrow has been decided.(2)_ well have a meeting tomorrow has not been decided.A. That B. If C. Whether D. what6. (1)_ sometimes keeps her awake at night _ Tom is getting more and more quiet at home. (2)_ sometimes keeps her awake at night is _ Tom is getting more and more quiet at home. A. That; which B. It; that C. Whether; what D. What; that7. (1)This is an illness that can result in total blindness _ left untreated. (2)_ you want me to fire you, I suggest you stop wearing sports clothes at office. (3)You must keep on working in the evening _ you are sure you can finish the task in time. A. since B. if C. unless D. until8. (1)Doctor Godwin says that _ what forceful arguments against cigarette there are, many people insist on smoking. (2)Doctor Godwin says that _ forceful arguments against cigarette there are, many people insist on smoking. (3)Doctor Godwin says that _ happens, many people insist on smoking. A. whatever B. no matter C. however D. even if9. (1) It looks _ the weather may turn out fine tonight.(2)The chemical teacher said, “ do everything _I do .”A. as than B. as C. though D. as if (as though)50. (1)-Do you mind _ here? - Sorry, it isnt allowed. A. if I smoke B. smoking C. my smoking D. to smoke (2) Its very cold today. Would you mind _the window? A. my closing B. closing C. if I close D. to close (3)Would you mind _ for me for f few minutes? A. wait B. your waiting C. waiting D. if you wait1. （1）We dont knowhe will come unless told（2）We dont knowhe will come until told thatwhetherif nothow long2. I dont knowor not you will help me（2）I dont knowwill help me（3）I knowyou will help me thatifwhether who3. (1)If you take five out of eight, three _.(2)Five out of eight _ three.(3)Take five from eight and the _ is three.A. remainder B. remains C. is remained D. leaves4. (1)I doubt _ he can help you with your English in his spare time.(2)I dont doubt _ he can help you with your English in his spare time.A. that B.if C. whether D. what5. (1)If you come here earlier, you _ the great scientist.(2)If you had come here earlier, you _ the great scientist.A. are going to see B. would have seen C. will see D. would