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DoyoubelieveIusedtobeveryfat?It’shardforyou_____________now._______istobelieve.ToseetobelievethatHowcanyoubelieve?TheinfinitiveTrytofindthesentenceswhichcontaintheinfinitives.1.Unfortunately,thedoctorsdon’tknowhowtomakemebetter,butIamveryoutgoingandhavelearnedtoadapttomydisability.2.Iusedtoclimbtrees,swimandplayfootball.3.ThenIstartedtogetweakerandweaker.4.Evenafterallthat,noonecouldgivemydiseaseanameanditisdifficulttoknowwhatthefutureholds.5.Sometimes,too,Iwastooweaktogotoschoolsomyeducationsuffered.6.MyambitionistoworkforafirmthatdevelopscomputersoftwarewhenIgrowup.7.LastyearIinvented…andabigcompanyhasdecidedtobuyitfromme.8.Ialsohavetodoalotofwork,especiallyifIhavebeenawayforawhile.9.Justacceptthemforwhotheyare,andgivethemencouragementtoliveasrichandfullalifeasyoudo.不定式由“to+do(动词原形)”构成,其否定形式是“nottodo”,不定式可以带宾语或状语构成不定式短语,没有人称和数的变化,但有时态和语态的变化。Thedefinitionofinfinitive1.主语(subject)2.表语(predicative)3.宾语(object)4.宾补(objectcomplement)5.定语(attribute)6.状语(adverbial)7.独立结构(absoluteconstruction)Tokeepsmilingishealthyforyou.单个不定式作主语时,谓语动词用单数。It’simportanttolookupthenewwordsinthedictionarywhenyoustudyEnglish.若不定式太长,往往用it作形式主语,不定式后置。1.不定式作主语(subject)Myjobtoprotecttheworld.is2.不定式作表语(predicative)Seeingistobelieve.Toseeisbelieving.Toseeistobelieve.不定式常用在系动词be,seem,appear,get,remain等后作表语。Allyouhavetodois(to)finishthejobquickly.如果主语部分有个表示不定式内容的do,用作表语的不定式可省略to。•LinShuhaolikestoplaybasketball.•Ifinditstillnecessary(forhim)___________ifhewantstowin.句型：think/consider/find/…+it+adj.+todotoworkhard某些动词后往往用it作形式宾语,不定式后置。3.不定式作宾语(object)agree,afford,appear,ask,attempt,care,choose,claim,dare,decide,demand,deserve,determine,expect,fail,get,hate,hesitate,hope,hurry,intend,learn,manage,offer,plan,prepare,pretend,promise,refuse,seem,tend,threaten,want,wish+todo常见动词不定式作宾语的动词有：sorry,surprised,happy,glad,eager,angry,foolish,right,wrong,slow,quick,rude,cruel,disappointed…e.g.I’mglad/pleasedtoseeyou.Weweresurprisedtohearthenews.Lookatthesentencesandfindtherules.不定式可以用在某些形容词后作宾语，如：Mymumasksmetoplaythepianotwohourseveryday.4.不定式作宾补(objectcomplement)Theteachertoldme_______________________.+sb.todosth.warn,tell,allow,help,ask,force,expect…tocleantheblackboard引导不定式作宾补的动词1.不定式在感官动词(feel,hear,listento,watch,lookat,notice,observe)后；2.使役动词(let,have,make)后。不定式作宾补时不带to的情况五看(watch,see,lookat,notice,observe)三使(make,let,have)二听(listento,hear)一感觉(feel)1.Theysawtheboyfallsuddenlyfromthetree.Theboywasseentofallsuddenlyfromthetree.2.MothermadeJohnwashthecar.Johnwasmadetowashthecar.以上的动词用于被动式，to要还原1.Itislookingforasuitablecoattowear.2.Tomhasanicepentowritewith.5.不定式作定语(attribute)1.不定式作定语时常放在被修饰的名词或代词之后(a)Shewasverybusyandhadnotimetovisitherfriends.(b)Ladiesandgentlemen,Ihavesomethingimportanttotellyou.2.当名词被thefirst,thelast,theonly等词以及形容词最高级修饰时e.g.Sheisalwaysthefirsttocomeandthelasttoleave.3.something,anything,nothing,everything等复合不定代词常用不定式作后置定语。4.如果不定式是不及物动词,则后面需加适当的介词。e.g.Pleasepassmesomepapertowrite___.on1)Haveyouanythingtosend?你有什么东西要寄吗？2)Haveyouanythingtobesent?你有什么要（我或别人）寄的东西吗？（不定式tosend的动作执行者是you）（不定式tobesent的动作执行者是已被省略的me或someoneelse）e.g.Igotupearly_______________.inorderto,soasto,enoughto,onlytotocatchthetrain在一些短语中也有体现:6.不定式作状语(adverbial)1.Hespokeloudly(soas/inorder)tobeheard.2.Hewassofoolishastobelieveit.=Hewassuchafoolastobelieveit.=Hewasfoolishenoughtobelieveit.3.Hewokeuponlytofindthathewassleepingoutdoors.不定式作状语的作用表示目的表示结果出乎意思的结果Totellthetruth,Iamnothappyatthemoment.•tobefrank•tobehonest•totellthetruth7.独立结构(absoluteconstruction)1.Itisgoodtohelpothers.2.Itismyambitiontomakesurethatthedisabledpeopleinourneighborhoodhaveaccesstoallpublicbuildings.3.MyambitionistoworkinthecomputerindustrywhenIgrowup.Identifyitsfunctionsubjectsubjectpredicative4.Idon’thavetimetositaroundfeelingsorryformyself.5.Iamtheonlystudentinmyclasstohaveapetsnake.6.Abigcompanyhasdecidedtobuyitfromme.7.MyfellowstudentshavebeguntoacceptmeforwhoIam.attributeattributeobjectobject8.Ihavehadtoworkhardtoliveanormallife.9.SomedaysIamtootiredtogetoutofbed.10.Wemustcallonlocalgovernmenttogivefinancialassistancetodisabledpeople.adverbialadverbialobjectcomplement形式主动被动一般式进行式完成式完成进行式todotohavedonetobedoingtohavebeendoingtobedonetohavebeendoneIamgladtoseeyou.Hehasdecidedtogivehersomemoney.表示的动作通常与谓语所表示的动作或状态同时或者几乎同时发生，或是在它之后发生。Iamverygladtobeworkingwithyou.Hepretendedtobeworkinghardwhenhisbosspassedhim.表示的动作通常与谓语动词表示的动作同时发生。Hehappenedtohaveseenthefilmbefore.ThenovelisbelievedtohavebeentranslatedintoChinese.不定式所表示的动作发生在谓语动作或状态之前。主动语态todo被动语态tobedoneItisanhonorformetobeinvitedtoattendthemeeting.Everyonelikestheherotobepraised.stoptodosth.停下来去做某事doingsth.停止做某事forgettodosth.忘记去做某事doingsth.忘记已做了某事remembertodosth.记得去做某事doingsth.记得曾经做某事e.g.Thequestionisverydifficulttoanswer.Theproblemisdifficulttodealwith.1.主语+be+adj.+todo能用于此句型的形容词有:difficult,easy,comfortable,fit,hard,pleasant,tiresome(使人疲劳的),interesting,nice,heavy,dangerous,light,important,etc.Theboxislightenoughtocarry.Theriverwateriswarmenoughtoswimin.2.主语+be+adj.+enough+todoThebooksseemedtooheavytocarry.Theiceistoothintoskateon.3.主语+be+too+a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本文标题：人教版选修7-Unit-1-Living-well-Grammar精品公开课课件
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