If引导条件状语从句的详细用法解答 引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。如： If you ask him，he will help you．如果你请他帮忙，他会帮你的。 If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。 If you have finished the homework，you can go home．如果你作业做完了就可以回家了。 另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。如： If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。 I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。 另外你还要注意if 条件句的时态搭配 1．if从句用一般现在时，主句用一般将来时 If he runs he’ll get there in time. 如果他用跑的，他就会及时赶到那儿。 The cat will scratch you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。2．if从句用一般现在时，主句用may/might/can If the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。 If it stops snowing we can go out. 如果雪停了，我们就可以出去。 3．if从句用一般现在时，主句用must/should If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。 4．if从句用一般现在时，主句用一般现在时 If you heat ice it turns to water. (也可用will turn)如果把冰加热，它就会化成水。5．if从句用现在进行时，主句用一般将来时 If you are looking for Peter you’ll find him upstairs. 如果你是在找彼得，上楼就会找到他。 6．if从句用现在完成时，主句用一般将来时 If you have finished dinner I’ll ask the waiter for the bill. 如果你吃完了，我就叫服务生来算账 注意： 学习" if " 引导的条件状语从句的用法,现在总结一下: if 条件句不一般,几个要点记心间; 条件句,放在前,逗号要放句中间。 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。
If条件状语从句专练 1. If I ___(go) to the party, they ___(be) upset. 2. If I ___(take) a taxi, it ___(be) too expensive. 3. If she ___(finish) work early, she can go home. 4. If the weather is fine, we ____(go) for a walk. 5. If I ___(have) time tonight, I will finish the book. 6. If it ___(rain) next Sunday, we won`t be able to plant trees. 7. If she ___(arrive) home, she will phone
me. 8. Unless you speak to him first, she ___(not speak) to you. 9. If he ___ (call) to you, tell him I will ring back. 10. I don`t know if it ___(rain) tomorrow. 11. Have a rest if you ___(be) tired. 12. Don`t come unless I ___(call) you. 13. I don`t know if he ___(come) tomorrow, but if he __(come), I`ll let you know. 宾语从句与状语从句混合 1. ——Helen, do you know if Martin
if引导的条件状语从句 引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下某事很可能发生。如： If you ask me ,I will answer you． If it rains tomorrow, I will stay at home. I will stay at home if it rains tomorrow. 另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。如： If I were in university，I would …． If I had enough money ,I would buy a car. 1.if从句用一般现在时，主句用一般将来时 If he runs , he’ll get there in time． 2.if从句用一般现在时，主句用may/might/can/must If the fog gets thicker the plane may/might be diverted. 3.if从句用一般现在时，主句用一般现在时 If you heat ice it turns to water. (也可用will turn) 4. if从句用现在进行时，主句用一般将来时 If you are looking for Peter you’ll find him upstairs. 5.if从句用现在完成时，主句用一般将来时 If you have finished dinner I’ll ask the waiter for the bill.
if_条件状语从句的时态练习及答案_初中习题集 I.单项选择 you _____ to the party, you’ll have a great time. a. will go b. went c. go d. going will be a long time ____ peter _____ his work. a. since, has finished b. after, finishes c. when, will finish d. before, finishes. 3. what will father _____ us from Japan? a. take b. bring c. carry d. make 4. Weifang is famous ______ kites a. for b. to c. on d. with 5． I____ her the answer if she ____me. a. can tell, will ask b. will tell, will ask c. would tell, ask d. will tell, asks 6. – what are you going to do tomorrow? --we’ll go to the library tomorrow if it ___. a. isn’t rain b. rain c. won’t rain d. doesn’t rain 7.—Do you know when he will come back tomorrow? --sorry, I don’t know. when he ____ back, I’ll tell you. a. comes b. will come c. come d. may come 8. what will you do if you _____ to the old folk’s home visit? a. go b. went c.going d. will go 9. If I eat ____ food, I’ll be very fat. a. too many b. many too c. too much d. much too ’ll give the book to him if he ___ here next sunday. a. will come b. comes c. is coming d. came 11. There ____an english film in our school tomorrow. a. is going to have b. will have c. is going to be d. has you tell us where ____？ a. will the next olympic games held b. the next olympic games will be held c. would the next olympic games be held d. the next olympic games would be held 13. When my mother returned last night,I ____ a book. a. read b. am reading c. was reading d. am going to read 14. What ____ you ____ when it began to rain? a. do, do b. were, doing c. are, doing d. did, do 15. I’ll wake you up when he ____back. a. will b. is going to come c. comes d. come II、用所给词的适当形式填空 1.If you _______(feel) tired, you ______(have) to have a rest. 2. Where _____ he ______(see) the film if he ________(have) time?
◆if引导的条件状语从句 条件状语从句是在复合句中作条件状语的句子。表示假如有从句的动作发生就会有主句的动作发生。条件状语从句常由从属连词if引导。 ◆if引导的条件状语从句使用须知： 一、位置 if引导的条件状语从句，既可放在主句之前也可放在主句之后。当从句置于主句之前时，常用逗号与主句隔开。例如： You will catch the bus if you get up early. =If you get up early, you will catch the bus. 如果你早起的话，就能赶上公共汽车。 二、时态 应遵循主、从句时态呼应的原则。当主句是一般现在时(包含祈使句和含情态动词can, may, must等的句子)，从句也用一般现在时。例如： You must see the doctor if you are ill. 如果你生病了，你必须去看医生。 If you want to go skating, wear warm clothes. 如果你想去滑冰，穿上暖和点的衣服。 一．选择正确答案。 1. It was raining heavily___ we got to Paris. A. while B. if C. when D. because 2. I don’t know if ___ tomorrow. A. it doesn’t rain B. the rain will stops C. the rains won’t stop D. it won’t rain 3 . The volleyball match will be put off if it___ . A. will rain B. rains C. rained D. is raining 4. Difficulties are nothing if we ___ not afraid of them A. will B. shall C. are D. do 5. We ___ Beijing tomorrow if it doesn’t rain. A. are going to B. would C. shall D. will go 6. I don’t like to be interrupted if I___ . A. speak B. will speak C. am speaking D. spoke 7. If you ___ the book you will understand the story better. A. will be reading B. have read C. will have read D. read 8. If you ___ I will go with you
if引导的条件状语从句 单项选择： ( )1. If you ____________ to the party, you’ll have a great time. A. will go B. went C. go D. going ( )2. I ____________ her the answer if she ____________ me. A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks ( )3. —What are you going to do tomorrow? —We’ll go to the library tomorrow if it ____________. A. isn’t rain B. rain C. won’t rain D. doesn’t rain ( )4. —Do you know when he will come back tomorrow? —Sorry, I don’t know. When he ____________ back, I’ll tell you. A. comes B. will come C. come D. may come ( )5. I’ll give the book to him if he ____________ here next Sunday. A. will come B. comes C. is coming D. came ( )6. I’ll wake you up when he ____________back. A. will B. is going to come C. comes D. come ( )7. The football match will be put off if it ____________. A. will rain B. rains C. rained D. is rained ( )8. I won’t go if it ____________ tomorrow. A. rain B. is raining C. rains D. will rain ( )9.We will have no water to drink we don’t protect the earth. A. until B. before C. though D. if ( )10.—Do you know if finished the work? —Not yet. If he , he will give me a call. A. he’s, will finish B. he’ll, finishes C. he’s , finishes D. he’ll , will finish 方法总结： if 条件句不一般,几个要点记心间; 条件句,放在前, 逗号要放句中间。 条件句表真实，主将从现要遵从； （主将从现） 巩固题： ( )1. You are sure to pass the exam ___ you study hard. A. if B. though C. that D. since ( )2. I'll go to see the film with you___I have time this evening. A. whether B. so C. if D. when ( )3. ___ you study harder, you'll never pass the final exam. A. If B. Until C. Unless D. Except