人教版八年级英语上册第十单元IF引导的条件状语从句
人教版初中英语八年级上册 If 引导的条件状语从句
= If you don't hurry up, you will miss the train.
注意： 为了避免重复，条件状语从句中常 使用do( does, did ) 来代替上文提 到的动作。
- I think I will ride my bike. - If you do, you'll be late.
巩固练习
.
1）如果明天下雨，我们就不去野餐。
If it rains tomorrow, we will not go for a picnic.
2) 如果你的孩子们在街上大声喊叫，你能怎么办？ What can you do if your children shout on the street?
定义：if “如果, 假如” 它引导的句子表示某事发生 所需的条件，即“在…条件下，某事才能发生”， 在句子中充当状语，因此称之为条件状语从句。
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must/ should
oAdro:naIowntwgheI.eifnnskey?eosduo?.fHinoiwshmyaonury horoamnegweosrk, you can go home
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人教版英语八年级上册unit 10语法：条件状语从句
If引导的条件状语从句
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. If you want to pass the exam, you should study hard.
想一想：哪个是主句？哪个是从句？ 找一找：共同特点
If引导的条件状语从句
If you go to the party(从句）, you'll have a great time（主句）. If they have the party today(从句）, half the class won't come（主句）. If we ask people to bring food(从句）, they'll just bring potato chips and chocolate（主句）. If we do that(从句）, more people will want to play the games（主句）.
You must stop if the traffic light is red. You can leave if you finish your homework.
If引导的条件状语从句
3. 如果主句是祈使句，从句同样要用一般现在时。 Don’t go and play football if you don’t finish your homework. Please call me if he comes next Sunday.
2.主情（can，may，should，must）从现: if从句+主句（含有情态动词） If you finish the homework， you can go home
人教版八年级英语上册 Unit 10 if_条件状语从句的时态练习
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 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 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’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. come1---5 CDBAD 6---10 DAACB 11---15 CBCBC。
八年级英语上册新目标 课件Unit 10辅导if引导的条件状语从句if引导的条件状语从句
if引导的条件状语从句含有if引导的条件状语从句的复合句表示假如有从句动作的发生，就会有主句动作的发生。
★通常情况下，如果主句用一般将来时，if引导的条件状语从句用一般现在时。
如：If he misses the last bus, he'll have to walk home.We'll have a party in the garden if the weather is good.★如果主句是祈使句或者主句的谓语部分含有情态动词，if引导的条件状语从句也常用一般现在时。
如：If anyone calls, tell them I'm very busy.If it rains, you can stay at home and relax.【链接】本单元我们还学了连词unless，可意为“除非；如果不”，通常可以和if ... not 互换使用。
如：He won't go to sleep unless you tell him a story.=He won't go to sleep if you don't tell him a story.【运用】含有if和unless引导的条件状语从句的复合句Ⅰ. 句型转换1. You will be in the museum. Don't talk loudly.(用if合并为含有条件状语从句的复合句，且从句在前)___________________________________________2. You will take more exercise next year. You will keep healthy.(用if合并为含有条件状语从句的复合句，且从句在后)___________________________________________3. You will work hard. You won't do well in your exam.(用unless合并为含有条件状语从句的复合句，且从句在前)___________________________________________4. Mary will be busy this afternoon. She will play with us.(用unless合并为含有条件状语从句的复合句，且从句在后)___________________________________________5. You can't go into the art club unless you are a student.(改为同义句)You can't go into the art club __________________.Ⅱ. 单项选择1.—Thank you for telling me so much knowledge (知识) about nature.—Don't mention it. __________ you have more questions, come to me any time.A. IfB. BecauseC. Though (2019 四川乐山)2.—The weather report says that it __________ tomorrow in most parts of Anshun city.—If it __________, the school sports meet will be canceled (将被取消).A. will rain; will rainB. will rain; rainsC. rains; will rainD. rains; rains (2019 贵州安顺)3. If I __________ a two-week holiday next year, I will take part in a short study tour (旅行) to Beijing University.A. tookB. takeC. will takeD. are taking (2019 湖北黄石)4. You mustn't drive a car on the road __________ you get a driver's license (驾照).A. unlessB. ifC. since (2019 湖南长沙)5. The pollution in the river is terrible! It will be cleaner _______ we take action (采取措施) now.A. thoughB. ifC. unlessD. until6. Mandy will work out the math problem __________ she gives up.A. ifB. becauseC. soD. unless答案Ⅰ. 1. If you are in the museum, don't talk loudly.2. You will keep healthy if you take more exercise next year.3. Unless you work hard, you won't do well in your exam.4. Mary will play with us unless she is busy this afternoon.5. if you aren't a studentⅡ. 1-6 ABBABD。
人教版八年级英语上册unit10知识点归纳
Unit 10 If you go to the party, you’ll have agreat time一、主要词汇动词（v）：organize组织；advise建议；solve解决；trust相信；名词（n）：meeting会议；video录像带；chocolate巧克力；teenager青少年；wallet钱包；mile英里；mistake错误；himself 他自己；advice建议；step步骤；Experience经历，经验；动词&名词：travel旅游；形容词（adj）：upset难过的；normal正常的；angry生气的；understanding善解人意的；careless粗心的；careful小心的，仔细的；副词（adv）：certainly 当然；连词（conj）：unless除非，如果不；if 如果；when当二、单元语法If 引导的条件状语从句1、If意为“如果”，引导条件状语从句；If you go there，I’ll go，too 如果你去那里，那我也会去从句主句My mother will take me to the park if she is free主句从句2、时态运用在含有if 引导的条件状语从句的主从复合句中，主句为下列情形之一的，条件状语从句要用一般现在时。
①主句是一般将来时（主将从现）If he comes，he will bring his violinIf you leave，you won’t get gifts from Mrs White②主句谓语含有情态动词may/might/can/must/should等时If you want to lose weight，you must eat less meat③主句是祈使句If you are not strong enough，please don’t take part in such an activity如果你不够强壮，就请不要参加这种活动1、If we ______ take environmental problem seriously，the earth ______ worse and worse.A. don’t; will beB.won’t; isn’tC.won’t; isD. don’t; won’t be2、If Tom ______ the game,we’ll give him a surprise.A.winB.winsC.wonD.winning3、All of us will be happy ______ you can comeA.whileB.ifC.butD.or4、If Mr.Green _______ back, please let me knowA.will come Bes Ce D.had come5、As a teenager，you _____ help your parents do some houseworkA.shallB.willC.shouldD.must6、For everyone’s safety, we _____ always remember that law against driving after drinkingA.couldB.shouldC.mightD.would三、知识点讲解1、if you go to the party，you’ll have a good time若你去聚会，你会玩得很开心直译：有一段开心的时光引申：玩得开心have a good time = enjoy oneself = have fun ，玩得开心Enjoy oneself 享受自己Have fun 拥有乐趣/找到乐趣They are having a good time in the park = they are having fun in the park = they are enjoying themselves 他们在公园里玩得很开心2、half the class won’t come 一半的学生不会来Half 有两种词性：①形容词：“一半的”，一半放在冠词the前面Half the workers come from Shandong 一半的工人都来自山东②名词：“一半”Half of ...... ......的一半Half of these apples are from America 这些苹果有一半是从美国运来的注意：half of 后面若接的是不可数名词，谓语动词要用单数形式若接的是可数名词复数，谓语动词要用复数形式Half of the money is mine 这钱有一半是我的Half of the classmates are boys 班上的同学有一半都是男生【拓展】 all，形容词：意为“全部的”名词：全部All the students are from China 全部的学生都是来自中国All of my money was stolen yesterday 昨天我所有的钱都被偷了3、let ’s order food from a restaurant 让我们在餐厅订购食物吧！Order作动词时有两种意思：①订购，下单Order sth from... 从某处订购某物Would you like to order some bread？你需要点一些面包吗？I order some clothes from that shop 我从那家商店订购了一些衣服②命令Order sb to do sth 命令某人做某事The general orders the soldiers to leave for next city at once将军命令士兵们立刻动身前往下一个城市【拓展】两个常见且重要的结构：In order to+动词原形 = in order that（句子），意为“为了......”He gets up early in order to catch the early bus = He gets up early in order that he can catch the early bus为了赶上早班车，他早早就起床了4、If we ask people to bring food，they’ll just bring potato chips and chocolate如果我们要求大家带食物过来，他们只会带薯片和巧克力过来 Ask，动词，两层意思：①询问，问：the teacher asked us “Do you finish homework？”老师问我们道：你们完成作业了吗？②要求； ask sb to do sth 要求某人做某事My parents ask me to go home on every weekend我父母要求我每周末都要回家The teacher asks the students not to play outside老师要求学生们不要到外面去玩耍It is time for class，Mr.King asked all the children ______ down quietlyA.sitB.satC.to sitD.sitting5、They’ll be too lazy to cook 他们会懒得不想煮饭too......to... 太......以至不能...Too + 形容词/ 副词 + to +动词原形He is too fat to run fast 他太胖了以至不能跑得快His father is too poor to send him to school 他父亲太穷了以至不能送他上学He runs too slowly to catch up with Mike 他跑得太慢了以至于追不上麦克Too...to...是初中重点学习结构之一，它可以及so...that... 和not...enough to互换So+形容词/副词 +that（句子）He is too fat so that he can’t run fastHis father is so poor that he can’t his child to school Not + 形容词 + enough（adv）+ to do sthHe is not thin enough to run fastHis father is not rich enough to send his child to school1、The girl is _____ young _____ dress herself2、—I haven’t seen my grandparents for long，I’m too busy _____ them these days.—Why not call them instead?A.visitB.to visitC.visitingD.visits6、Can you give me some advice please? 请问你可以给我一些建议吗？Advise, 动词，建议Advice，名词，建议，是不可数名词，因此要表示数量时需要借助some和piece等词A piece of advice 一条建议Two pieces of advice 两条建议Some advice一些建议Suggestion，也是“建议”，但它是可数名词Some advice = some suggestions一些建议7、travel around the world = travel all over the world 环游世界8、If people have problems，they should keep them to themselves 如果人们又烦恼的话，他们应该把这些问题留给自己Keep...to oneself，“保守秘密；把（问题/烦恼）埋在心底”The teenagers like to keep their problems to themselves 青少年喜欢自己的问题埋藏在心里反身代词：9、Unless we talk to someone，we’ll certainly feel worse 除非我们跟别人聊一聊，不然的话我们肯定会感觉更糟糕Unless，连词，意为“除非...（不然的话）主句会......”，也遵循主将从现Unless you study hard, you won’t get good grade____________________Unless you come here, we won’t leave______________________________Unless = if... NotIf you don’t study hard, you won’t get good grade_______________________,we won’t leaveWe’ll have a picnic near the river tomorrow ______ it rains heavilyA.untilB.ifC.unlessD.when10、certainly = sure = of course 当然；当然可以11、She was afraid to tell her parents about it 她害怕告诉父母这件事Be afraid to do sth = be afraid of doing sth 害怕做某事I am afraid to speak in public = I am afraid of speaking in public 我害怕在公众面前讲话12、Be angry with sb 生某人的气Mike is angry with me 麦克生我气了Be angry at/about sth 因某事而生气My father is angry at my mistake 父亲因我犯的错生气了Be angry with sb at/about sth 因某事而生某人的气My friend is angry with me at my being late 我的朋友因我的迟到而生气了生气的其他表达方法：be angry with sb = be upset with sb = be mad at sb 生......的气13、careful，形容词，意为“小心的；留心的；谨慎的”Be careful of/about... 注意/留心......You must be careful of your pronunciation 你必须要留心你的发音Be careful to do sth 做某事要是留心的,注意的/当心、留心去做某事He is very careful to read every word他很留心/细心地去读每一个单词Careful 小心的（反义词） careless 粗心的Helpful帮的上忙的（反义词）helpless无助的Meaningful有意义的（反义词）meaningless无意义的14、make mistake 犯错误You should be careful not to make mistake你应该小心点，不要犯错误15、Robert Hunt advises students about common problems 罗伯特亨特就一些常见的问题给学生们提了一些建议Advise sb on/about sth 就某事给某人提建议The teachers always advise students about study 老师们总是就学习方面给学生们提建议Advise ab to do sth 建议某人做某事Advise sb not to do sth 建议某人不要做某事He advises us to do more exercise 他建议我们多做运动Mike advises us not to drink much cold water in winter 麦克建议我们冬天不要喝太多冷水16、It is best not to run away from our problem 最好还是不要逃避我们的问题It is + 形容词 + to do sth 做某事是......的形式主语真正主语It is not polite to speak loudly in public_____________________________It is easy to find the way to the library _____________________________It is best to do sth 直译：做某事是最好的引申：最好做某事It is best to do sth = you had better do sth = you’d better do sth最好做某事你最好做某事It is best not to do sth = you ’d better not do sth 最好不要做某事你最好不要做某事It is best to speak English every day 最好每天都说说英语You ’d better not run away from your responsibilities你最好不要逃避责任Run away from... 直译：跑步远离某物引申：逃避......17、Students often forget that their parents have more experience 学生们经常忘记他们的父母往往更有经验Experience作为名词，有两种意思：①经验；不可数名词Mrs.Green has a lot of teaching experience 格林夫人又很多教学经验②经历；可数名词Tom likes traveling，he has many unusual experiences 汤姆喜欢旅游，他有许多不寻常的经历—Mrs.Wang was sent to teaach English in a poor mountain village last year.—She said she would never forget some pleasant _______ while working there.A.experimentsB.expressionsC.experiencesD.emotions18、be halfway to doing sth/sth，意为“完成了或者做了某件事的一半”其中，这里的“to”是介词，所以后面跟的是动词，动词要是ing 形式We are halfway to finishing the job 我们完成了工作的一半19、finally = at last = in the end ，都意为“最后”I waited and waited，and the train finally arrived 我等了又等，最终火车来了My brother went to college at last 我弟弟最后终于上了大学They won in the end 他们最后赢了巩固练习一．单项选择( )1. My mother will make some food for us if we _______ a party at home.A. will haveB. haveC. are havingD. are going to have( )2. Carol will come and play with me if he _______ busy.A. isB. won’t beC. isn’tD. will be ( )3. _______ you are famous, you will be known by many people.A. IfB. BecauseC. AlthoughD. So( )4. He makes a living _______ many kinds of fruits.A. sellingB. sellC. to sellD. for selling( )5. My job is dangerous, but I can make _______ money.A. a lot ofB. lessC. littleD. no( )6. I had a difficult time _______ my homework yesterday evening.A. doB. to doC. doingD. did( )7. --I feel kind of unhealthy. --You should get enough _______.A. junk foodB. exerciseC. waterD. beef( )8.If Mary is late tomorrow, the teacher won’t __________.A.let in herB.let her inC.let into herD.let her into( )9.Half the class ________from Yueyang , and they can all swim.A.isB.areC.wasD. were( )10.If you study hard , you will _______a good education.A.getB.makeC.findD.have( )11.March is a good time _______China .A.visitB.visitsC.to visitD.visiting( )12.We’re going to play soccer. Will you __________us、 A.take part in B.look after C.join anize ( )13.He has a lot of _________and he is ___________about hisEnglish and Chinese.A.worry, worryB.worried, worriedC.worries, worriedD.worried, worried( )14.They have some problems_________their families.A.withB.ofC.aboutD.on( )15.Unless it ________tomorrow , we will fly a kite in the park.A.rainB.rainsC.doesn’t rainD.not rain( )16._________can help us relax a lot.A.TravelB.TravelingC.TraveledD.Travels( )17. I think you ______pass the exam if you work hard .A.can able toB.will able toC.can be able toD.willbe able to( )18.I saw a boy ________in the street , so I went to ask what was wrong with her.A.cryB.cryingC.to cryD.cried( )19.My dream is ___________a pilot when I grow up.A.beingB.to beC.to beingD.be( )20.Peter is a shy boy. He always __________his problems __________.A.writes , downB.keeps , to himelfC.finds ,outD.takes , up二．根据汉语提示或首写字母补全单词。
英语人教版八年级上册if引导的条件状语从句
用法一：主句是一般将来时， 从句用一般现在时。 （主将从现）
If you finish your homework, you can go home.
If you want to lose weight, you must eat less bread.
4.Hurry up if you _d_o_n_’t__w_a_n_t(not want) to be late.
Look and say
you
get up late
If you get up late, you’ll be late for school.
late for school
I我
If I have a lot of money, I will buy a big house.
If的两面性(两个意思)
1、if : “如果”, 引导条件状语从句
I will go to the cinema if I am free
tomorrow.
主将从现
2、if: “是否”,引导宾语从句
I don't know if he will come tomorrow. 从句可用将来时
Practice
Please call me if he comes next Sunday.
用法三：主句是祈使句，从句 也要用一般现在时。 （主祈从现）
Exercises： 1.I _w_il_l _s_t_a_y_(stay ）at home if Lucy _co_m__e_s （come） tomorrow.
人教版八年级英语上册IF引导的条件状语从句
一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red.
If you finish the homework， you can go home．
如果你作业做完了就可以回家了。 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。
3. 如果主句是祈使句，从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
10.He _w__il_l _w_a_t_c_h(watch) TV ,if he ___ihe g_o_e_s__(go) to the party, he_w__ill_h_a_v_e_ (have) a great time.
2.If the rain __st_o_p_s_(stop) tonight, we will go to the cinema.
状语从句
在复合句中表示的状语
可以用来修饰谓语（包括非谓语 动词）、定语、状语或整个句子。
状语从句 分类
1时间状语从句
6让步状语从句
2地点状语从句
7比较状语从句
3原因状语从句
8方式状语从句
4条件状语从句
9结果状语从句
5目的状语从句
If 引导条件状语从句
定义：If “如果, 假如” 它引导的句子表示某事发生所需的
4。如果你经常听英文歌，你将会喜欢英语
人教版八年级上册英语期末复习必刷题-教师版——专题05 if引导条件状语从句
人教版八年级上册英语期末复习必刷题-教师版——专题05 if引导条件状语从句一、定义条件状语从句★是由if等引导词所引导的状语从句★“条件”是指某一件事情实现之后（从句中的动作），其它事情（主句中的动作）才能发生★条件状语从句中，引导词所在的句子是从句，另一部分为主句。
★if从句既可放在主句前，也可放在主句后。
若if从句放在主句前，须用逗号隔开。
If my mother is free, she will take me to the park.= My mother will take me to the park if she is free.如果我妈妈有空，她将会带我去公园。
二、用法在if引导的条件状语从句中，符合以下原则：★原则1：主将从现主句是一般将来时，从句用一般现在时。
If my brother comes back, he will take me to the park.★原则2：主情从现主句含有情态动词can/may/might/must/should等，从句用一般现在时。
If you want to be healthy, you should keep a good diet.★原则3：主祈从现主句是祈使句，从句用一般现在时。
Don’t play with the knife if you don’t want to get hurt.三、与其他句式之间的转换(1) 借助“祈使句+and / or+ 一般将来时的句子”这一句型来转换。
and在句意上表示顺承关系, or表示转折关系。
If you get up early, you'll get there on time.= Get up early, and you'll get there on time.= Get up early, or you won't get there on time. 早点起床, 你就会准时到那里。
英语人教版八年级上册if引导的条件状语从句
if引导的条件状语从句教学Teaching aims:Understand and know how to use the conditional clause.Teaching aids: pictures, computer, and little blackboard.Teaching procedures:Step 1 warming up:1.Play a song called“If you are happy, clap your ha nds.” And then the teacher sings the songwith the students together.2.Talk freely:There is a cat called Dudu.It is cute but lovely. It is unhappy, too. I think it may have some problems. Do you know the problems? If you are its owner, what will you do?3.Collect information:Write some sentences about “if” on the blackboard.①If you copy homework, you will start a bad habit.②She will be happy if she joins the party.③I will ask the teacher for help if I don’t understand.④If it’s fine tomorrow, we can go out.⑤Please call me if he is at home.⑥If you don’t hurry up, we will be late.⑦If you study hard, you will pass the exam.Step 2 Discuss and summarize:学生得出结论：①if意为“如果”，这种句子用来谈论事物的影响或者是后果。
八年级英语if 引导的条件状语从句优秀课件
主要讲一下if引 导的条件状语从句 的几种情况。
主将从现：指if条件状语从句中，从句用
一般现在时，主句用一般将来时(在这里尤 其要注意表示将来是指will或者shall，不能 用be going to) 。
• If it doesn’t rain tomorrow, we’ll go to the Great Wall.如果明天不下雨, 我们就会 去长城。
主
〔一般现在时〕
将
〔一般将来时〕
从
Hale Waihona Puke 现You’ll be late if you take the bus to the party.
〔一般将来时〕
〔一般现在时〕
所给词的适当形式填空 1. If it____(be) fine tomorrow, we’ll go for an outing. 2. If he ___(come) to see me, I’ll be very happy. 3. If he ____ (study) hard, he’ll pass the exam. 4. If she _____〔live〕with us, we’ll take good care of her.
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，不用 逗号隔开。假设 if 条件句放句首，从句 后面要加逗号，和主句隔开。还要注意 前后时态一致原那么。
Look at the blackboard if you can’t remember the words.
If you can’t remember the words, look at the blackboard.
• You may stay to dinner if you like. 你要是愿意可以留下来吃饭。