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1、WelcometoourclassWelcometoourclassWelcometoourclassGrammarandusageUnit1★To-infinitive★Bareinfinitive★Verb-ingformasanounI.To-infinitiveReviewthebasicsentenceselements.1.IwaswatchinganEnglishprogrammeat8o'clockyesterday.I-----waswatching-----anEnglishprogramme--
2、---at8o'clockyesterday----subjectobjectpredicateadverbial2.Thegamesof2006WorldCupareexciting.exciting----3.Ilostmyhistorybook.history----4.Hemadetheroomcleanandtidy.cleanandtidy----predicativecomplementattributeTheto-infinitivecanbeusedaloneoraspartofaninfiniti
3、vephraseandtheto-infinitivecanserveasthesubject,object,objectcomplement,attribute,predicativeoradverbialofasentence.(主语,宾语,宾语补语,定语,表语,状语)1.theto-infinitiveusedasthesubject不定式作主语eg.Toobeylawiseveryone'sduty遵纪守法是每个人的职责。Toknowoneselfisdifficult.了解自己是困难的。Totalkwith
4、yourmouthfullisrude.满嘴食物地讲话是不礼貌的。Itisimpossibletofinishtheworkinsuchashorttime.在如此短的时间内完成这项工作是不可能的。ItisusefulforyoutolearnsomespokenEnglish.学习一些口语对你来说是有用的。注意:当主语不定式结构太长时,或尤其是在疑问句和感叹句中,往往放在谓语之后,而用代词it作形式主语。Howlongdidittakeyoutotakerollercoaster?Howterribleitisto
5、takerollercoaster?不定式作主语常见句型:a)Itis+adj.(easy,important,difficult…)+不定式b)Itis+n.(apity,apleasure,one’sduty,ashame…)+不定式c)Ittakes/needs/requires+sometime(hours,months,days,patience…)+不定式Itrequirespatiencetobeagoodteacher.It’smydutytoteachyouhowtobeastudentofNanj
6、ingNo.3MiddleSchool.不定式复合结构:以it为形式主语或形式宾语引导的复合结构,如前面的形容词指行为的性质就用:forsb.todosth.这种复合结构在句中可作主、表、宾、定、状等。Itisnecessaryforustogothere.(主语)Thereisnoneedforhimtoleave.(定语)Mysuggestionisforyoutodothejob.(表语)如果该形容词是指行为的性质,同时又指行为的人,则用ofsb.todosth.。这种句式中的常用形容词有:right,wron
7、g,brave,careful,careless,clever,wise,stupid,cruel,foolish,good,honest,kind,nice,silly等。It’sverykindofyoutocometoseeme.Itwasfoolishofhimtobelieveher.Ithinkitwiseofhernottoaccepttheiroffer.2.theto-infinitiveusedastheobject不定式作宾语eg.Hemanagedtosolvetheproblembyhims
8、elf.他自己设法解决了问题。Iliketoreadnewspaperarticlesaboutsports.我喜欢读一些体育方面的新闻报道。Amywantstoknowmoreaboutthefilm.安米想知道更多的关于这部电影的况。Thefollowingwordsareusuallyfollowedbytheto-infinitivea