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1、Unit1RevisetheInfinitiveDoyoubelieveIusedtobeveryfat?It’shardforyou_____________now._______istobelieve.ToseetobelievethatHowcanyoubelieve?TheinfinitiveTrytofindthesentenceswhichcontaintheinfinitives.Unfortunately,thedoctorsdon’tknowhowtomakemebetter,butIamveryoutgoingand
2、havelearnedtoadapttomydisability.2.Iusedtoclimbtrees,swimandplayfootball.3.ThenIstartedtogetweakerandweaker.4.Evenafterallthat,noonecouldgivemydiseaseanameanditisdifficulttoknowwhatthefutureholds.5.Sometimes,too,Iwastooweaktogotoschoolsomyeducationsuffered.6.Myambitionis
3、toworkforafirmthatdevelopscomputersoftwarewhenIgrowup.7.LastyearIinvented…andabigcompanyhasdecidedtobuyitfromme.8.Ialsohavetodoalotofwork,especiallyifIhavebeenawayforawhile.9.Justacceptthemforwhotheyare,andgivethemencouragementtoliveasrichandfullalifeasyoudo.不定式由“to+do(动
4、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’simportant
5、tolookupthenewwordsinthedictionarywhenyoustudyEnglish.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)finishthejobquickl
6、y.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,dem
7、and,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.
8、I’mglad/pleasedtoseeyou.Weweresurprisedtohearthenews.Lookatthesentencesandfindtherules.不定式可以用在某些形容词后作宾语
