(完整版)if引导的条件状语从句精讲与专题练习
2019年秋人教版八年级Unit 10 if引导的条件状语从句讲和练(含答案及解析)
2019年秋八年级上册单元语法讲与练if引导的条件状语从句语法精讲1.条件状语从句的含义由一个主句和一个或一个以上的从句构成的句子叫复合句。
在复合句中作状语的句子叫作状语从句。
状语从句根据它表达的意思可分为很多种，if引导的句子在复合句中表示条件，作主句的条件状语，因此称为条件状语从句。
If you don’t hurry，you’ll be late.如果你不快点，你将会迟到的。
If he comes，let me know.如果他要来，通知我。
2.if引导的条件状语从句的结构if引导的条件状语从句在句中的位置比较灵活，可以放在主句之前(这时要和主句用逗号隔开)，也可以放在主句的后面(不用逗号)。
条件状语从句的结构为：if+陈述句，主语+谓语(=主语+谓语+if+陈述句)。
意为“如果……就……”。
If you ask him，he will tell you the answer.如果你问他，他就会告诉你答案。
I hope to visit her if I’m free.如果我有空，我希望去看望她。
3.if引导的条件状语从句与主句时态的一致性在复合句中，从句中动词的时态在一定程度上受到主句动词时态的制约，英语语法中称为时态呼应。
（1）在含有条件状语从句的复合句中，如果主句是一般将来时，从句则用一般现在时代替一般将来时表将来。
If it rains，I will stay at home.如果下雨，我将待在家里。
If you study hard，you will pass the examination.如果你努力学习，就能通过这次考试。
（2）如果主句含有must，may，can等情态动词，从句也要用一般现在时。
If you drive too fast，you may have an accident.如果你把车开得太快，你可能会出事故。
You must stop if the traffic light is red.如果红灯亮了，你必须停下来。
if引导的条件状语从句与专题练习
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 getsthicker 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.一、用所给词的适当形式填空1.If you ________(feel) tired, you _______________ (have) to have arest.3.If there __________(be) fewer trees, there _______________( be) more pollution.5. If Marcia _____________(live) alone, she ___________________( keep) a pet parrot.na ________________( buy) a new dress if the old one____________(be) out of style.9.Peter _____________( send) me a beautiful souvenir if he________________(tour) Spain.10.If Mr Green ___________(say) I am hard- working, my parents_________( feel) glad.11.I ____________(go) to the beach if it________________ ( not rain)this week.13.He ____(write) a letter to his grandparents if he ____(get) his reportcard this week.14. If she ____________(get) up late, she _____________ ( not catch)the early bus.15.Peter ________(major) in English if he ____(pass) the exams in Peking University.16.如果努力学习，你就会取得好成绩。
if引导的条件状语从句(讲义及答案)
if 引导的条件状语从句（讲义）状语用来表示行为发生的时间、地点、目的、方式、程度等，通常由副词或介词短语充当，也可由一个句子充当。
I slept at home yesterday because I had a bad cold.状语从句状语从句指句子作状语。
根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式等从句。
状语从句一般由连词(从属连词)引导。
I will go to school by bike tomorrow if it is sunny.Grammar focus—I think I’ll take the bus to the party.—If you do, you’ll be late.If you take the bus to the party, you’ll be late.—I think I’ll stay at home.—If you do, you’ll be sorry.If you stay at home, you’ll be sorry.—What will happen if they have the party today?—If they have it today, half the class won’t come.—Should we ask people to bring food?—If we ask people to bring food, they’ll just bring potato chipsand chocolate.1.if 在本单元句中意为“；”，用于引导即 if 引导的是一个完整的句子，所以一定要有主谓，成为从句，另一个句子则成为主句。
If you go there, I’ll go, too.We will go hiking if it doesn’t rain tomorrow.If Bob leaves tomorrow, I will hold a party for him tonight.2.if 引导的条件状语从句既可以放在主句前，也可放在主句后。
if引导的条件状语从句知识点及练习题(2021年整理精品文档)
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if引导的条件状语从句（一）定义if引导的句子在复合句中表示条件，假如if从句的动作发生，主句的动作就（不)会发生，因此称为条件状语从句。
（二）位置if 引导的条件状语从句位置灵活，可直接放在主句后面,也可以放在句首。
放在句首时，从句后面要用逗号和主句隔开。
① If I have enough money, I will travel around the world.② I will travel around the world if I have enough money.(三）用法(1）当主句是一般将来时时,从句用一般现在时。
（主将从现）（2）当主句是祈使句时，从句也用一般现在时。
① Work hard, and you’ll pass the exam ea sily。
努力学习，你将很容易通过考试。
→If you work hard，you’ll pass the exam easily.② Hurry up，or you’ll miss the train. 快点儿，否则你就赶不上火车了。
→If you don’t hurry up，you’ll miss the train.（3）当主句含有情态动词时，if引导的条件状语从句通常用一般现在时。
We must study hard if we want to pass the final exam.如果想通过期末考试,我们必须努力学习.（4）用含介词with或without的介词短语转换。
（完整版）if条件状语从句练习与答案
（完整版）if条件状语从句练习与答案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1.If you to the party, you’ll have a great time.a.will gob. wentc. god. going2.It will be a long time peter his work.a.since, has finishedb. after, finishesc. when, will finishd. before, finishes.3.what will father us from Japan?a.takeb. bringc. carryd. make4.Weifang is famous kitesa.forb. toc. ond. with5.I her the answer if she me.a. can tell, will askb. will tell, will askc. would tell, askd. will tell, asks6.– what are you going to do tomorrow?--we’ll go to the library tomorrow if it .a.isn’t rainb. rainc. won’t raind. 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. comesb. will comec. comed. may come8.what will you do if you to the old folk’s home visit?a.gob. wentc. goingd. will go9.If I eat food, I’ll be very fat.a.too manyb. many tooc. too muchd. much too10.I’ll give the book to him if he here next sunday.a. will comeb. comesc. is comingd. came11. There an english film in our school tomorrow.a. is going to haveb. will havec. is going to bed. has12.Could you tell us where ？a.will the next olympic games heldb.the next olympic games will be heldc.would the next olympic games be heldd.the next olympic games would be held13.When my mother returned last night,I a book.a. readb. am readingc. was readingd. am going to read14.What you when it began to rain?a. do, dob. were, doingc. are, doingd. did, do15.I’ll wake you up when he back.a. willb. is going to comec. comesd. comeII、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?3.If there (be) fewer trees, there (be) more pollution.4.He (dress) more casually if he (not work) on weekends.5.If marcia (live) alone, she (keep) a pet parrot./doc/d011234800.html,na (buy) a new dress if the old one (be) out of style.7.The twins (fight) if they (argue).8.I (have) a bake sale if I (need) money for education.9.Peter (send) me a beautiful souvenir if he (tour) spain.10.I f mr. green (say) I am hard- working, my parents (feel) glad.11.I (go) to the beach if it (not rain) this week.12.they (have) a match if the p.e. teacher (be) busy?13.He (write) a letter to his grandparents if he (get) his report card this week.14.If she (get) up late, she (not catch) the early bus.15.Peter (major) in English if he (pass) the exams in peking university.III. 完成句子1.如果他到的晚了会发生什么事情？What if he late?2.如果努力学习，你就会取得好成绩。
If引导的条件状语从句讲解与练习
If 引导的条件状语从句讲解与练习If引导条件状语从句的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。
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。
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/must/shouldIf it stops snowing we can go out. 如果雪停了，我们就可以出去。
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。
(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。
)If条件状语从句练习( )1. If I find his phone number, I ______ you.A. tellB. toldC. will tellD. have told( )2. I __ the CDs to you if I have time tomorrow.A．will return B. returned C. have returned D. return( )3. The students will go to the Summer Palace if it ________tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn' t rain ( )4. I won’t watch the TV play if my father ___ me do my homework.A. letB. will letC. won’t letD. lets( )5. If you ___quiet, I’ll tell you what happened.A. willB. are C are to be D be( )6. If you go to the party, you ___ a good time.A. would haveB. haveC. will haveD. had( )7. Don’t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( ) 8.He doesn’t tell me when he __. I’ll telephone you as soon as he ___.A. will come, comesB. will come, will comeC. comes, will comeD. comes, comes( )9.-- I don’t know if Dr. White ______ to the party next week.–-- I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don’t know if there ____ a sports meeting next month. If they _____ it, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; hold宾语从句练习( ) 1. I don’t know ___________________.A. what does he like bestB. what he like bestC. what he does like bestD. what he likes best ( ) 2. Can you tell me ______________________?A. where she livesB. where does she liveC. she lives whereD. where she live( ) 3. He asked me _______________________________.A. what time is itB. what time it isC. what time was itD. what time it was( ) 4. Do you know _______________________?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( ) 5. The man asked her _______________________.A. why did she do itB. why she did itC. why she doesD. why does she do it( ) 6. Nobody knows _________________________.A. when will she come backB. when she come backC. when she will come backD. when does she come back ( ) 7. Mum asked _______________________________.A. where he wasB. where was heC. where he isD. where is he( ) 8. Do you know _______________________________?A. what they are looking forB. what are they looking forC, they are looking for what D. what do they look for () 9. The teacher asked ________________________________.A, who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( ) 10. I asked her ______________________________.A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( ) 11. The teacher told us ________________________________.A. that light traveled faster than soundB. if light traveled faster than sound.C. that light travels faster than soundD. if light travels faster than sound( ) 12. He said that __________________________________.A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( ) 13. I asked him _________________________.A. where did he goB. where he wentC. where does he goD. where he did go( ) 14. --Excuse me, could you tell me _____ get to the plane?--Certainly. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( ) 15. Do you know _____he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how ( ) 16. --Can you tell me why __________________?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet ( ) 17. Do you know _______________________________?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( ) 18. Could you tell me _______________________?A. who is heB. where’s the nearest res taurantC. if he will come tomorrowD. which way is to the underground station( ) 19. --Do you know ___________?--Sorry. I don’t know. You may ask the woman over there.A. when the shop opensB. when is the shop openC. when does the shop openD. when will the shop open ( ) 20 --Dad, do you know ____________? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game。
(完整版)if引导的条件状语从句练习题
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，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/canIf 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/shouldIf you want to lose weight you must/should eat less bread。
if引导的条件状语从句精讲与专题练习
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，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/canIf 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/shouldIf 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。
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初中英语――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，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/canIf 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/shouldIf 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。
在if 引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态。
如：We can walk there if we can't find a bus .If it rains tomorrow ,we will not go to the zoo.What will you do if you find a panda in danger.如果if 条件句谈论的是重复发生和预示要发生的情景和事件，则主从句大多用一般现在时态。
如：If bears are in danger ,they attack people.在if 引导的条件状语从句中，if 和条件句位置灵活，可直接放在主句后面，若if 条件句放句首，从句后面要加逗号，和主句隔开。
还要注意前后时态一致原则一、用所给词的适当形式填空1.If you ________(feel) tired, you _______________ (have) to have a rest.3. If there __________(be) fewer trees, there _______________( be) more pollution.5. If Marcia _____________(live) alone, she ___________________( keep) a pet parrot.6. Lana ________________( buy) a new dress if the old one ____________(be) out of style.9. Peter _____________( send) me a beautiful souvenir if he ________________(tour) Spain.10. If Mr Green ___________(say) I am hard- working, my parents _________( feel) glad.11.I ____________(go) to the beach if it________________ ( not rain) this week.13.He ____(write) a letter to his grandparents if he ____(get) his report card this week.14. If she ____________(get) up late, she _____________ ( not catch) the early bus.15. Peter ________(major) in English if he ____(pass) the exams in Peking University.16. 如果努力学习，你就会取得好成绩。
If you__________ _________, you ___________ good _____________.17. 他如果看电视太久了，他的父母会不高兴。
If he _________ TV too much, his parents __________ __________ unhappy.18. 如果我们为他组织生日聚会，大家都会来的。
Everyone ________________ if we _____________ a birthday party __________ him.19. 如果明天不下雨，我会和你一起去公园的。
If it __________ __________ tomorrow, I ______________ go to the park _________ you. 21. 如果他有空，他会帮助你的。
If he _________________, he _________________ you.23. 你如果抄同学的作业就不能学好各门功课。
You _______ _____ g ood at all the subjects if you ______ the other students’ homework.Ⅰ.单项选择（15分）1.If you _____ to the party, you’ll have a great time. A. will go B. went C. go D. going2. It will be a long time ____ Peter _____ his work.A. since, has finishedB. after, finishesC. when, will finishD. before, finishes.3. What will father _____ us from Japan? A. take B. bring C. carry D. make4. Weifang is famous ______ kites. A. for B. to C. on D. with5．I ____ her the answer if she ____me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks6. – What are you going to do tomorrow?--We’ll go to the library tomorrow if it ___.A. isn’t rainB. rainC. won’t rainD. doesn’t rain7.—Do you know when he will come back tomorrow?--Sorry, I don’t know. When he ____ back, I’ll tell you.A. comesB. will comeC. comeD. may come8. What will you do if you _____ to the old folk’s home visit?A. goB. wentC.goingD. will go9. If I eat ____ food, I’l l be very fat.A. too manyB. many tooC. too muchD. much too10. I’ll give the book to him if he ___ here next Sunday.A. will comeB. comesC. is comingD. came11. There ____an English film in our school tomorrow.A. is going to haveB. will haveC. is going to beD. has12. Could you tell us where ____？A. will the next Olympic Games heldB. the next Olympic Games will be heldC. would the next Olympic Games be heldD. the next Olympic Games would be held13. When my mother returned last night, I ____ a book.A. readB. am readingC. was readingD. am going to read14.What ____ you ____ when it began to rain?A. do, doB. were, doingC. are, doingD. did, do15. I’ll wake you up when he ____back.A. willB. is going to comeC. comesD. come1---5 CDBAD 6---10 DAACB 11---15 CBCBC。