八年级上册英语if引导的条件状语从句(作业及答案)

t 条件状语从句一、 条件状语从句通常由 if （如果）, unless （除非），as long as （只要）引导。

例如：If it rains tomorrow, we won ’go to the park. 如果明天下雨，我们就不去公园了。

Unless weather stops me, I go for a walk every. 我每天都会去散步，除非遇上坏天气。

Our parents will be pleased with our performance as long as we try our best.小试牛刀：1、只要我们竭尽全力，父母就会满意我们的表现。

Our parents will be pleased with our performance _____ _____ ______ we try our best.2、如果人人为保护环境做出贡献，世界将会变得更美好。

______ ______ ______ _____ _______ to protectingthe environment, the world will become much more beautiful.二、if 引导的条件状语从句（1）“if 从句+祈使句”的句子。

其实，if 作为一个连词，主句也可以是其他形式的句子。

例如：If you want to go, please let me know.If the green light isn ’t on, wait for a minute.(2)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。

注意：A. “祈使句 + and + 陈述句”可以转化为 if 引导的肯定条件状语从句，而且主语是第二人称。

B. “祈使句 + or + 陈述句”可以转化为 if 引导的否定条件状语从句，而且主语是第二人称。

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（讲义及答案）You will keep healthy if you do more exercise.If you do more exercise, you will keephealthy.1.时态：if 引导的条件状语从句用表示将来，主句可以使用一般将来时，含有情态动词的句子或者祈使句。

主将从现If you practice speaking English more, you will like itbetter. If she goes to New York tomorrow, I will go there,too.My sister will be very happy if our uncle comes next week.练习：If Nancy the exam, she will go to Australia forEnglish study.A.passB. passedC. passesD. will passIf the weather fine, we have a sports meeting next weekend.A. will be; willB. is; willC. was; wouldD. was; will主情从现If you get up at six tomorrow morning, you can catch the first bus. If you go to study in America next year, you must learn English hard.主祈从现Let’s go out for a walk if it doesn’t raintomorrow. If you see a snake in the forest, don’tmove!unless也可引导条件状语从句，表示“如果不，除非”Unless he comes here in an hour, I will go there alone.If he doesn’t come here in an hour, I will go therealone.You will feel worse unless you go to see the doctor right now.You will feel worse if you don’t go to see the do ctor right now.练习：you read it, you can’t imagine how interesting the story is.A. UnlessB. BecauseC. AlthoughD. If —Please give Alice the story book you see her.—All right.A.unlessB. orC. butD. ifExercises一、单项选择( )1. Studying in groups is necessary you want to do well in school.A.ifB. untilC. unlessD.though ( )2. —Will you help me with the trouble?—I won’t you tell me the truth.A. ifB. butC. afterD. unless( )3. If Bob away from the junk food, he will be in good health.A. stayB. will stayC. staysD.stayed ( )4. If Tom thegame, we’ll give him a surprise.A. winB. winsC. wonD.winning ( )5. We’ll go to the park if ittomorrow.A. won’t rainB. don’t rainC. doesn’t rainD.rain ( )6. If you’re more careful, youmuch better.A. doB. will doC. are doingD. did( )7. If there no buying and selling of animals, there no killing in nature.A. is; will beB. will be; will beC. is; isD. will be; is( )8. I’m waiting for my friend. If he ,Iswimming alone.A. doesn’t come; goB. won’t come; goC. won’t come; will goD. doesn’t come; will go二、翻译9.如果明天不下雨，我会去看你的。

（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。

【答案】D
【解析】
【详解】
句意：——我想知道蒂娜下周是否会来中国。——如果不下雨，她就会来。根据语境推测对话的语境是“——我想知道蒂娜下周是否会来中国。——如果不下雨，她就会来。”，第一个设空处的if意思是“是否”，引导宾语从句，主句是一般现在时，从句根据时间状语next week确定用一般将来时，一般将来时的构成是：主语+will+动词原形，排除B/C；第二个设空处考查含有if引导的条件状语从句中主句的时态，在含有条件状语从句中的复合句中，时态遵循“主将从现”的原则，即：主句用一般将来时，从句使用一般现在时表将来，表示“不下雨”应借助于助动词does，故选D。
8．It is necessary for children to exchange ideas with parents from time to time ________ a good parent-children relationship could be set up.
A．so thatB．becauseC．as soon as
考点：考查连词的用法。
5．一When did you leave your office yesterday?
一I finished the project.
A．UntilB．WhileC．WhenD．Not until
【答案】D
【解析】
句意：昨天你什么时候离开你的办公室的？——直到我完成那个任务。本题考查连词。A. Until直到···时候才结束，要与延续性动词连用；B. While当···时候；C. When当···时候；D. Not until直到···时候才开始，与非延续性动词连用；句子中finished（完成）是非延续性动词，故选D

一、选择题1．—Helen, do you know if Martin _______ to my party next week?—I think he will come if he ______ free.A．will come; will be B．will come; isC．come; is D．comes; will be B解析：B【详解】句意：——海伦，你知道马丁下周是否来参加我的聚会吗？——如果他有空，我想他回来的。

考查宾语从句和状语从句用法。

结合语境可知上文是宾语从句，描述的是将来发生的动作，故用一般将来时态。

下文是条件状语从句，当主句描述将来动作时，从句中用一般现在时态表示将来的动作。

故选B。

2．The boy still kept ________ after the school sports meeting.A．practice running B．practicing runningC．practice to run D．practicing to run B解析：B【详解】句意：在学校运动会之后，这个男孩还一直练习跑步。

考查固定搭配。

短语keep doing sth.表示一直做某事；短语practice doing sth.表示练习做某事。

根据题意，故选B。

3．She'll be late unless she ________ up early.A．got B．gets C．to get D．getting B解析：B【解析】【详解】句意：除非她起床早，她会迟到。

A. got一般过去时态；B. gets一般现在时态；C. to get动词不定式；D. getting现在进行时。

unless引导的时间状语从句，遵循主句用一般将来时，从句用一般现在时态。

根据题意，故选B。

4．I'm afraid the headmaster is________ busy ________ meet the visitors.A．much; to B．too; toC．so; to D．such; to B解析：B【解析】【详解】句意：我恐怕校长太忙而不能见游客。

班级姓名学号分数Unit 10 If you go to the party.if引导的条件状语从句（时间：60分钟，满分：100分）一、单项选择(本大题共50小题，每小题2分，共100分)1．________ I’m free tomorrow, I will help you tidy your room.A．So B．Though C．If2．We will go camping if it ________ tomorrow.A．won’t rain B．isn’t raining C．doesn’t rain D．didn’t rain 3．—Would you like to go fishing with me this Sunday?—If it ________, I will go.A．doesn’t rain B．rains C．won’t rain D．will rain4．If she ________ to Shanghai next month, I will go with her.A．go B．goes C．is going5．If I ________ to go abroad, I’ll go to Britain.A．allow B．am allowed C．was allowed D．will allow6．The concert comes after school. If Jenny ________, I will go, too.A．is going B．goes C．went D．will go7．If the weather ________ fine, we ________ have a sports meeting this weekend.A．is; will B．will be; will C．was; willA．because B．unless C．if9．We can go to see Battle at Lake Changjin ________ you want to see a movie this weekend.A．and B．if C．but D．so10．_________ you like the Beijing Opera, traditional music or magic shows, you can enjoy them there.A．If B．Before C．So D．When11．I don’t know if I ________ free tomorrow. If I ________ free, I will go to the bookstore.A．am; am B．will be; will be C．will be; am D．am; will be12．If the temperature ________ below zero degree, water ________ into ice.A．drops; turns B．will drop; turnsC．drops; will turns D．will drop; will turn13．—Labor (劳动) education is important to students’ development.—I agree. ________ students can often help with housework, it will be good for them.A．Unless B．Though C．Until D．If14．—Mom, I want to watch the program I Am a Singer IV now.—You can watch it ________ you finish your homework.A．if B．unless C．but D．so that 15．—Could you help me do some cleaning tomorrow?—If I ________ free, I will do.A．am B．will be C．was D．were16．________ you look after this coat carefully, it will keep you warm through many winters.A．If B．Unless C．Before D．So17．I would like to read my favourite book ________ I’m free this weekend.A．if B．before C．until D．though18．If it ________ tomorrow, we will go on a picnic by the lake.A．isn’t raining B．won’t rain C．rained D．doesn’t rain19．If you ________ too much time online, it will hurt your eyes badly.A．spend B．spent C．will spend D．are spending 20．Boys and girls, believe in yourself. If you ________ hard, your dream will come true.A．will study B．studied C．study D．are studying 21．—Happiness is about having each tiny wish come true.—________ we work hard, we’ll make our life full of happiness.A．If B．Unless C．Though22．—I hear Jackie Chan will come to Wuxi next week.—Really? ________ he ________, my sister will be very happy.A．If; comes B．If; will come C．Before; come D．Till; comes23．The students will make fewer mistakes ________ teachers have the punishment power (惩戒权).A．if B．but C．though D．unless24．Our primary school has changed a lot. If you go there, you _________ the changes.A．find B．found C．will find D．have found25．If your brother ________ to the party, he ________ a good time.A．goes; has B．will go; will have C．goes; will have26．We should take the rest of the food home __________ we can’t eat up what we ordered.A．if B．though C．so D．yet27．—If it ________ tomorrow, we will go camping together.—Sounds great!A．won’t rain B．doesn’t rain C．isn’t sunny 28．—You will get two free concert tickets ________ you win this singing competition.—That sounds great!A．unless B．since C．until D．if29．— If I ________ tomorrow, I will pay a visit to Fuzhou Forest Park.— That’s a good idea!A．has time B．will have time C．have time30．If people ________ the traffic rules, there will be fewer accidents.A．will obey B．obeys C．obey31．If you take this bus, you ________ in Beijing tomorrow.A．arrives B．arrive C．arrived D．will arrive 32．If Jack still ________ the flu tomorrow, he ________ to work.A．has; won’t go B．has; doesn’t go C．will have; won’t go 33．Gina ________ to hang out with her friend if she is not available this weekend.A．refuse B．refuses C．refused D．will refuse 34．There ________ 29 days in February if it ________ a leap year (闰年).A．will be, is B．will be, will be C．are, will be D．are, is 35．—Come on, Susan. I’m sure you will catch up with the others ______ you work harder.—Thank you, Miss Green.A．before B．until C．if D．so36．We can have a talk _______ you have time.A．so B．if C．or D．though 37．It will be hard for him to get up early in the morning if he ________ to bed too late.A．go B．goes C．will go D．are going 38．—Jim will bring some friends from other schools to the party.—If he ______, the teachers will ask them to leave.A．is B．does C．has D．will39．If each of us ________ something for the environment, all of us will have a better life.A．will do B．does C．is doing D．do40．If I ________ a holiday next year, I ________ part in a summer camp in Beijing.A．took; will take B．take; will take C．will take; take D．will take; took 41．— I want to know if Maria ________ us in the fashion show tonight.— I believe if she ________ her homework, she will join us.A．joins; finishes B．will join; finishes C．joins; will finish D．will join; will finish 42．Mom won’t be happy if she _________ this mess.A．sees B．saw C．will see D．has seen43．I’ll go to the meeting if it ________ by 5:00 p.m.A．ended B．will end C．end D．ends44．If it ________ sunny, we will go for a picnic in the park next Sunday.A．is B．was C．will be D．has been45．________ you don’t understand, ask your teacher.A．If B．Unless C．Because D．For46．You ________ if you do one thing at a time and stick to your plan.A．succeed B．succeeded C．will succeed D．have succeeded 47．________ the mobile phone rings during an interview, you should turn it off at once.A．Although B．Since C．If D．Before48．________ you look after it carefully, this coat will keep you warm through many winters.A．If B．Unless C．Before D．Once49．I think you’ll be late ________ you take a bus to the party.A．or B．if C．and D．but50．—What will happen ________ we hold the party next Monday evening?—Most of our classmates will not come.A．though B．if C．unless参考答案：1．C【详解】句意：如果明天我有空，我将帮你整理你的房间。

八年级英语if条件状语从句+巩固练习概念引入英国前首相撒切尔夫人（Margaret Thatcher）曾用if条件句对男人和女人进行评价：In politics, if you want someone to make a speech, ask a man; if you want something done, ask a woman.在政治领域，如果你想要有人发表演说，那就找男士去；而如果你想真正把事情解决，那就找女士。

用法讲解一、概念连词if的意思是“如果”，它引导的句子表示某事发生所需要的条件，即“在……条件下某事才能发生”，在句子中充当状语，因此我们称之为条件状语从句。

在复合句中连词if引导的句子为从句，被修饰的句子为主句。

从句可以放在主句后，也可以放在主句前，从句放在主句前时，应用逗号将它与主句隔开。

例如：We’ll go to the Great Wall if it doesn’t rain tomorrow. = If it doesn’t rain tomorrow, we’ll go to the Great Wall.如果明天不下雨，我们就去长城。

二、用法1. 条件状语从句通常由连词if引导，意为“如果，假如”，主句不能用be going to 表示将来，而应该用shall或will。

例如：If I’m free tomorrow, I’ll go with you.如果我明天有空，我将会和你一起去。

2. if引导的条件状语从句，主句用一般将来时，从句则用一般现在时，即“主将从现”。

例如：If it is sunny tomorrow, I’ll climb the hill.如果明天天气晴朗，我将去爬山。

3. 正确区分if引导的条件状语从句和if引导的宾语从句。

在条件状语从句中，if表示“如果”；而在宾语从句中，if表示“是否”。

可以用下面的方法区分：1) 从句前置法：if引导的条件状语从句，可以放在主句之前并用逗号隔开，也可放在主句之后；而if引导的宾语从句只能放在主句之后。

.if 引导的条件状语从句（作业）一、单项选择( )1. If you to the party, you’ll have a great time.A. will goB. wentC. goD. going ()2. I her the answer if she me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks()3. —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( )4. —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 come( )5. What will you do if you to the old folk’s home visit?A. goB. wentC. goingD. will go ()6. I you up when he back.A. will wake; comeB. will wake; comesC. wake; comesD. wake; will come二、用所给词的适当形式填空(be) fewer trees, there ( be) 7.If theremore pollution.8.If Marcia (live) alone, she( keep) a pet dog.na (buy) a new dress if the old one(be) out of style.10.If Mr. Green (say) I am hard- working, my parents_ ( feel) glad.(go) to the beach if it11.I( not rain) this week.12.He (write) a letter to his grandparents if he(get) his report card this week..13.If she _ (get) up late, she( not catch) the early bus.三、根据汉语意思完成句子14.如果努力学习，你就会取得好成绩。

八年级英语条件状语从句单选题40题1. If it _______ (rain) tomorrow, we will stay at home.A. rainB. rainsC. will rainD. rained答案：B。

解析：在条件状语从句中，如果主句是一般将来时，从句要用一般现在时表将来。

选项A形式错误；选项C是一般将来时，不符合条件状语从句的时态规则；选项D是一般过去时，也不符合要求，所以正确答案是B。

2. We will go to the park if the weather _______ fine.A. isB. wasC. will beD. are答案：A。

解析：同样遵循主句为一般将来时，从句用一般现在时的规则。

选项B是一般过去时，不符合；选项C是一般将来时，不能用于从句；主语the weather是第三人称单数，选项D是复数形式，所以A正确。

3. If you _______ (not study) hard, you won't pass the exam.A. don't studyB. doesn't studyC. won't studyD. not study答案：A。

解析：条件状语从句中，当主语是you时，否定形式要用don't，选项B用于第三人称单数主语；选项C是一般将来时的否定形式，不符合从句时态；选项D形式错误，所以A正确。

4. She will buy a new dress if she _______ enough money.A. haveB. hasC. hadD. will have答案：B。

解析：根据条件状语从句的时态搭配，主句是一般将来时，从句用一般现在时，主语she是第三人称单数，所以要用has，选项A用于第一、二人称和复数主语；选项C是一般过去时；选项D是一般将来时，都不符合，故答案为B。

5. If he _______ (come) here tomorrow, I will tell him the news.A. comeB. comesC. will comeD. came答案：B。

第10讲if 引导条件状语从句1、知晓条件状语从句结构及用法。

2、熟练掌握if引导状语从句的同义转换。

【拓展】if /when 引导状语从句和宾语从句这两种从句。

从句的时态的确定。

A．If B．And C．Be D．Or【答案】A【详解】句意：如果你不快点，你将错过公共汽车。

考查连词辨析。

if如果；and和；be是；or否则。

“you don’t hurry up”是错过公共汽车的条件，用if引导条件状语从句。

故选A。

考点2：if引导条件状语从句时态的确定1．—Would you like to go fishing with me this Sunday?—If it ________, I will go.A．doesn’t rain B．rains C．won’t rain D．didn’t rain【答案】A【详解】句意：——这个星期天你愿意和我一起去钓鱼吗？——如果不下雨，我就去。

考查时态。

if引导的条件状语从句，从句中用一般将来时，主句中用一般现在时，根据“If it..., I will go.”可知，此处表达“不下雨”。

故选A。

2．—What are you going to do this weekend?—We’ll go to have a picnic if it ________.A．rains B．is raining C．doesn’t rain D．won’t rain【答案】C【详解】句意：——这个周末你打算做什么？——如果不下雨，我们将去野餐。

考查条件状语从句。

rains第三人称单数形式；is raining现在进行时；doesn’t rain不下雨，一般现在时态；won’t rain一般将来时。

if引导的条件状语从句，主句一般将来时态，从句一般现在时态。

选项B、D不正确。

根据“We’ll go to have a picnic”可知，从句应该是“如果不下雨”，用否定形式doesn’t rain。

**********精心制作仅供参照鼎尚出品*********if 指引的条件状语从句（作业）一、单项选择()1. If you to the party, you’ ll have a great time.A. will goB. wentC. goD. going()2. I her the answer if she me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks()3. —What are you going to do tomorrow?— We’ llgo to the library tomorrow if it.A. isn ’t rainB. rainC. won’t rainD. doesn ’t rain()4. — Do you know when he will come back tomorrow?— Sorry,I don ’knowt. When he back, I’ ll tellyou.A. comesB. will comeC. comeD. may come()5. What will you do if you to the old folk’homes visit?A. goB. wentC. goingD. will go ()6. I you up when he back.A. will wake; comeB. will wake; comesC. wake; comesD. wake; will come二、用所给词的适合形式填空7.If there(be) fewer trees,there( be)more pollution.8.If Marcia(live)alone, she( keep) a pet dog.na(buy) a new dress if the old one(be) out of style.10.If Mr. Green(say)I am hard-working,myparents_ ( feel) glad.11.I(go) to the beach if it( not rain) this week.12.He(write) a letter to his grandparents if he(get) his report card this week.13.If she_ (get) up late, she( not catch) the early bus.**********精心制作仅供参照鼎尚出品*********三、依据汉语意思达成句子14.假如努力学习，你就会获得好成绩。

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.I.yo.____.t.th.party.you’l.hav..grea.time.a.wil.go.b.went.c.go .d.going2.I.wil.b..lon.tim.___.pete.____.hi.work.a.since.ha.finished .b.after.finishesc.when.wil.finish .d.before.finishes.3.wha.wil.fathe.____.u.fro.Japan.a.take .b.bring .c.carry .d.mak.4.Weifan.i.famou._____.kitesa.for .b.to .c.on .d.with5.I___.he.th.answe.i.sh.____me.a.ca.tell.wil.ask .b.wil.tell.wil.ask.c.woul.tell.ask .d.wil.tell.asks6..wha.ar.yo.goin.t.d.tomorrow?--we’l.g.t.th.librar.tomorro.i.i.___.a.isn’.rain.b.rain .c.won’.rain.d.doesn’.rain7.—Do you know when he will come back tomorrow?--sorry..don’.know.whe.h.___.back.I’l.tel.you.es.e .e ..8.wha.wil.yo.d.i.yo.____.t.th.ol.folk’.hom.visit?a.go .b.went .c.going .d.wil.go9.I..ea.___.food.I’l.b.ver.fat.a.to.many .b.man.too .c.to.much.d.muc.too10.I’ll give the book to him if he ___ here next sunday.e .es .ing .d.came11.Ther.____a.englis.fil.i.ou.schoo.tomorrow.a.i.goin.t.have.b.wil.have .c.i.goin.t.be .d.has12.Could you tell us where ____？a.wil.th.nex.olympi.game.held.b.th.nex.olympi.game.wil.b.heldc.woul.th.nex.olympi.game.b.hel.d.th.nex.olympi.game.woul.b.helds.night,.____..book.a.read .b.a.reading .c.wa.reading.d.a.goin.t.read14.Wha.___.yo.___.whe.i.bega.t.rain?a.do.d..b.were.doing.c.are.doing.d.did.do15.I’l.wak.yo.u.whe.h.____back.a.will .e .e.eII、用所给词的适当形式填空1.I.yo._______(feel.tired.yo.______(have.t.hav..rest.2.Wher.____.h. ______(see.th.fil.i.h.________(have.time?3.I.ther.___.(be.fewe.trees.ther.______.(be.mor.pollution.4.H.____.(dress) mor.casuall.i.h.______.(no.work.o.weekends.5.If marcia _______ (live) alone, she _______ (keep) a pet parrot.n.____.(buy..ne.dres.i.th.ol.on.___.(be.ou.o.style.7.Th.twin.____.(fight.i.they_________.(argue).8.I_____.(have..bak.sal.i.I___.(cation.9.Pete.___.(send.m..beautifu.souveni.i.h.____(tour.spain.10.I.mr.gree.______.(say..a.hard.working.m.parent.____.(feel.glad.11.I_____.(go.t.th.beac.i.it_______.(no.rain.thi.week.12.____the._____.(have..matc.i.th.p.e.teache.______.(be.busy?13.H.______.(write..lette.t.hi.grandparent.i.h._____.(get.hi.repor.car.thi.week.14.I.sh._____.(te.sh.____.(no.catch.th.earl.bus.15.Pete.________.(major.i.Englis.i.h._______(pass.th.exam.i.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。

班级姓名学号分数Unit 7 Memoryif和unless引导的条件状语从句（时间：60分钟，满分：90分）一、单项选择(本大题共40小题，每小题1分，共40分)1．If you ________ too much time online, it will hurt your eyes badly.A．spend B．spent C．will spend D．are spending 2．Boys and girls, believe in yourself. If you ________ hard, your dream will come true. A．will study B．studied C．study D．are studying 3．The four children will climb the West Hill if it ________ rain next Sunday.A．isn’t B．doesn’t C．won’t D．didn’t 4．Jessica says she will go camping with us tomorrow if her homework _________.A．will finish B．finishes C．is finished D．will be finished 5．You can taste the delicious Yunnan Rice Noodles ________ you go to Yunnan.A．so B．and C．if D．but6．I will go to the beach if it ________ tomorrow.A．is raining B．rains C．doesn’t rain D．won’t rain 7．I’m waiting for my friend. ________, I’ll go shopping online.A．If she comes B．If she will come C．If she doesn’t come D．If she didn’t come 8．What ________ if I ________ my homework tommorrow?A．will happen; don’t finish B．will happen; didn’t finish C．happen; won’t finish D．happen; didn’t finish9．Kitty, our teacher won’t let you in school _________ you don’t wear a mask.A．so B．when C．if D．unless 10．She won’t be happy if she this mess.A．will see B．sees C．saw D．to see 11．Hurry up, Jim. You’ll be late for school ________ you don’t leave now.A．if B．when C．unless D．after 12．—Excuse me, could you please wake me up if my friend ________ here?—Of course, but we still don’t know when your friend ________ here.A．will come; comes B．will come; will come C．comes; will come D．comes; comes13．Meat will go bad quickly in summer _________ we put it in a fridge.A．unless B．as soon as C．until D．although14．Father is too tired today. Don’t call him ________ it is necessary.A．though B．unless C．if15．There are no buses to the beach. ________ you have a car, it’s difficult to get there.A．Since B．When C．Unless D．As soon as 16．Everyone makes mistakes. No one will make progress ________ he is willing to learn from them. A．unless B．if C．though D．because17．—Are you going hiking tomorrow?—Yes, that’s the plan ________ the weather is really bad.A．unless B．so C．if D．as soon as 18．Elephants usually won’t hurt a person ________ one becomes a danger to them.A．because B．unless C．if D．so19．I think you'll miss the train ________ you hurry up.A．if B．and C．unless D．when20．She won't pass the exam ________ she works hard.A．if B．unless C．when21．—Ordering take-away food is popular these days.—Yes. But my mom hardly does that ________ she really has no time to cook for me.A．if B．unless C．because D．so22．You won’t pass your exams ________ you work harder.A．when B．if C．unless D．after23．— Shall we go for a picnic in the forest park tomorrow afternoon?— Sure, ________ it rains heavily.A．although B．since C．unless D．when24．If you work hard, you ________ at last.A．succeed B．succeeded C．will succeed D．have succeeded 25．— We must stay at home to do our homework if it ________ tomorrow.— OK, I agree.A．rain B．is rainy C．will rain D．is raining26．He can’t catch up with the other students ________ he works hard.A．until B．if C．unless27．If you ________ this fast train, you will arrive in Shanghai in five hours.A．take B．will take C．took D．have taken28．I don’t know if he __________ tomorrow. If he __________, I will call you.A．will come, comes B．comes, will comeC．comes, comes D．will come, will come29．________ you must go and play football, wait until school is over.A．Whether B．If C．Because D．Unless30．It will be harmful to your hearing ________ you always listen to music by earphone (耳机).A．if B．so C．and D．but31．If tomorrow________fine, I ________ you to go shopping with me.A．will be; will call B．is; will call C．will be; call32．— If it ________ this Sunday, let’s go to the countryside.— OK! But nobody knows if it will rain in three days.A．won’t rain B．rains C．doesn’t rain33．You should get up a little earlier, _________ you want to catch the first bus to school.A．but B．or C．if D．and34．—What will your English teacher do _______ you eat in class?—He will stop me in a polite way.A．though B．if C．unless D．until35．________ you look after it carefully, this coat will keep you warm through many winters.A．If B．Unless C．Before D．So36．The snow ________ quickly if it is sunny.A．melts B．melt C．won’t melt D．will melt37．My brother will do this job better if he ________ how to use a computer.A．will know B．knows C．know D．knew38．If you _____ out all the candles in one go, the wish ______ true.A．will blow; will come B．blow; will come C．will blow; comes D．blow; comes39．You can surf the Internet ________ you want to know about the 18th World Middle School Games. A．until B．after C．if D．so40．I will be very happy ________ you come to my party.A．if B．though C．or D．and二、用所给单词的正确形式填空(本大题共10小题，每小题2分，共20分)41．If the rain ________ (stop) tonight, we will go to the park.42．If we continue cutting down the trees, we ________ (punish) by nature.43．I will ask her for my bike if she ________ (not return) it to me.44．What ____ (happen) if there is no water on the earth?45．If the boy ____________ (not be) so lazy, he’ll pass the exam.46．She________(not speak) to you if you don’t speak to her first.47．They ________ (fly) to Beijing if there is a holiday this summer.48．Kitty, you ________ (fail) the English exam unless you study hard.49．Unless he ________ (exercise) more, he will get fatter and fatter.50．Unless something unexpected ________(happen), I’ll see you tomorrow.三、句型转换(本大题共10小题，每小题4分，共40分)51．You can’t get good grades unless you work very hard. (同义句)You can’t get good grades _________ you _________ work very hard.52．If we don’t work hard, we won’t succeed in the end.(变为同义句)_________we _________ _________, we won’t succeed in the end.53．I won’t go to the dancing party unless they invite me. (改为同义句)I ________ go to the dancing party ________ they invite me.54．I won’t go to her birthday party unless she invites me. (同义句转换)I won’t go to her birthday party ________ she ________ ________ me.55．If you are tired, you can have a rest. (同义句转化)________ ________ ________ if you ________ tired.56．If you don’t study hard, you won’t get good grades. (改为同义句)You won’t get good grades ________ you ________ hard.57．They invite me. I will go to the dancing party. （将两句合并为一个句子）I ________ go to the dancing party ________ they invite me.58．You will get a fine. You park your car in the wrong place.(合并成一个句子)You ________ get a fine ________ you park your car in the wrong place.59．They are going to do more practice. They will win the match. (改为含有if条件句的复合句) ______ they ______ more practice, they______ ______ the match.60．Ride your bike or you’ll be late. （用if改写句子）You’ll be late if you __________ __________ your bike.参考答案：1．A【解析】句意：如果你花太多时间上网，那将会严重伤害你的眼睛。

八年级英语条件状语从句练习题40题1.If it rains tomorrow, we _____ stay at home.A.willB.wouldC.shouldD.must答案：A。

如果明天下雨，我们将待在家里。

此句是if 引导的条件状语从句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。

所以选A。

B 选项would 用于过去将来时或虚拟语气；C 选项should 表示应该；D 选项must 表示必须。

2.If I have time, I _____ help you with your homework.A.willB.wouldC.shouldD.must答案：A。

如果我有时间，我将帮你做家庭作业。

同样遵循“主将从现”原则，选A。

B 选项would 用于过去将来时或虚拟语气；C 选项should 表示应该；D 选项must 表示必须。

3.If you study hard, you _____ get good grades.A.willB.wouldC.shouldD.must答案：A。

如果你努力学习，你将取得好成绩。

“主将从现”，选A。

B 选项would 用于过去将来时或虚拟语气；C 选项should 表示应该；D 选项must 表示必须。

4.If she _____ to the party, she will have a great time.A.goesB.wentC.will goD.would go答案：A。

如果她去参加聚会，她会玩得很开心。

“主将从现”，从句用一般现在时，she 是第三人称单数，所以选A。

B 选项went 是过去式；C 选项will go 和D 选项would go 都不符合“主将从现”原则。

5.If we _____ late for school, the teacher will be angry.A.areB.wereC.will beD.would be答案：A。

if条件状语从句---用法
（2 ） If it stops snowing, we can go out. If you love your parents, you should help them do the housework. If you want to lose weight, you must eat less junk food.

A. can pass, will work C. passes, will work 答案：D
B. will pass, will work D. can pass, works
翻译：如果明天天晴，他可能会去看望他的叔叔。
If it is sunny tomorrow, he may visit his uncle.
英语 人教版 八（上）
Unit 10 If 条件状语从句
if条件状语从句---概念
连词 if 意为“如果”，它引导的句子表
示某事发生所需要的条件，即“在...... 条件下某事才能发生”，在句子中充 当状语，因此我们称之为 条件状语从 句。
if条件状语从句---结构

结构： if+ 陈述句，主语 + 谓语（或者主语 + 谓语 +if+ 陈述句），意为“如果... 就...”。 在复合句中，连词if引导的句子为从句，被 修饰的句子为主句。
从句可以放在主句前，用逗号与主句隔开； 从句也可直接置于主句后。 If I get up at 9:00, I will be late.


如果我早上九点起床，我将会迟到。
I will be late if I get up at 9:00.

八年级英语条件状语从句单选题40题1. If it ______ tomorrow, we will stay at home.A.rainsB.will rainC.rainedD.is raining答案：A。

本题考查条件状语从句中“主将从现”的规则，即主句用将来时，从句用一般现在时表将来。

A 选项正确，B 选项will rain 是将来时态，不能用于从句，C 选项rained 是过去式，D 选项is raining 是现在进行时态，均不符合要求。

2. You will pass the exam if you ______ hard.A.studyB.will studyC.studiedD.are studying答案：A。

同理，“主将从现”，A 选项正确，B 选项将来时态错误，C 选项过去式错误，D 选项现在进行时态错误。

3. If I have enough time, I ______ the book.A.will readB.readC.would readD.reads答案：A。

这也是条件状语从句，遵循“主将从现”，A 选项将来时态正确，B 选项一般现在时，C 选项过去将来时，D 选项第三人称单数形式，均不符合。

4. He ______ angry if you don't tell him the truth.A.isB.will beC.would beD.was答案：B。

“主将从现”，主句将来时，B 选项正确，A 选项一般现在时，C 选项过去将来时，D 选项过去式。

5. If she ______ early, she will catch the bus.A.gets upB.will get upC.got upD.is getting up答案：A。

“主将从现”，A 选项一般现在时正确，B 选项将来时态错误，C 选项过去式错误，D 选项现在进行时态错误。

6. If he comes here tomorrow, I will give him the book. But if he _____, I won't.A. won't comeB. doesn't comeC. isn't comeD. didn't come答案：B。