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1、Period4U1Book6GrammarandusageOverview:infinitive,verb-ingandverb-edByLongGuanyingfromNo.1MiddleSchoolofAnren,HunanTeachingaims:A.Getthestudentstoreviewtheformsofnon-finiteverbsB.GetthestudentstosummarisehowtousethemindifferentwaysC.Getthestudentstoknowthedifferencesbetwee
2、ndifferentformsofnon-finiteverbsKeypoints:Getthestudentstotellthedifferencesbetweendifferentformsnon-finiteberbsDifficultpoints:Getthestudentstousethedifferentformsofnon-finiteverbscorrectlyStep1.Differentformsofnon-finiteverbs非谓语动词是指在句子中不作谓语的动词，主要包括__________,_______,___
3、______。Step2.Usagesofnon-finiteverbsⅠ作主语---先做练习1._______________istobelieve./______________isbelieving.眼见为实。2.It’snouse_____________overspiltmilk.覆水难收。(打翻牛奶，哭也没用)3.Itisimpossible___________________(完成任务)withinsuchashorttime.4.Itisveryfriendlyofyou_________________________
4、______(邀请我们参加你的生日派对)5.____________(散步)isagoodformofexerciseforbothyoungandold.6.___________________(怎样去那里)hasn’tbeendecided.再归纳:1不定式作主语常表示具体的某一动作；动名词作主语表示泛指或一般的抽象概念Swimmingisexciting./ToswiminLuRiveristerrible.2.单个不定式作主语时,谓语动词用单数;若不定式太长,往往用it作形式主语,真正主语不定式短语整体后置3.复合结构:Itis
5、/was+adj.+(for/ofsb.)todosth.eg:ItisimportantforustolearnEnglishwell.Itisverykindofyoutohelpme.4.Itisnouse/nogood/useless+doingsth5.不定式可以和when/where/how/what/whether等连用，在句中作主语、宾语和表语Ⅱ作定语---先做练习1.Hehasnowish__________________(见她).2.Thepowerstation________________________明年修
6、建的willbeofgreatvaluetothepeople.3.Heisalwaysthelast__________________________(离开公司).4.Thetemple_________________________(矗立山顶的）wasbuiltintheMingDynasty.5.Thequestion_______________________(正被讨论的）isimportant.6.Lastautumn,Itookmanyphotosofleaves__________________________(落到
7、地上的).7.Idon’tliketoseetheletter______________________(用铅笔写的).再归纳：1在序数词、形容词最高级thefirst，thelast,theonly等修饰的名词后用动词不定式作定语。2.若作定语的不定式是不及物动词,或者及物动词与被修饰的词不能构成动宾关系时,则不定式动词后须加上适当的介词。eg:他正在找房子住。Heislookingforahousetolivein3.不定式短语作定语可以和中心名词(如chance,opportunity,wish,dream,ambition…)构
8、成同位关系。Eg.你要抓住这个出国的好机会。Youshouldseizethechancetogoabroad.现在分词与过去分词,不定式作定语的区别①过去分词做定语与其修饰词之间是动宾关系或
