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1、U2Grammar&WordPower一、1、thetensesanfvoicesofverb-ing主动被动一般writingbeingwritten完成havingwrittenhavingbeenwritten①Hehurriedhome,lookingbehindashewent.（一般式）②Havingfinishedtheirwork,theyhadarest.（完成式）③Thelargebuildingbeingbuiltisalibrary.（被动语态）④Havingbeenshownthelab,weweretakentoseetheli
2、brary.（被动完成式）二、1、Attributeaninterestingbookthemansittingbythewindowboilingwaterthebridgebeingbuilt1)现在分词用于名词前，用来修饰该名词，功能上相当于形容词；也可用于名词后，并可改写为定语从句。①ThegirlwritingalettertherecanspeakEnglishverywell.＝ThegirlwhoiswritingalettertherecanspeakEnglishverywell.②ThefactorymakingTVsetsisver
3、ylarge.＝ThefactorywhichmakesTVsetsisverylarge.2)与动名词作定语的区别(PPT10-11)动名词作定语表名词的作用或功能，现在分词作定语表名词正在进行的动作。3)与过去分词,不定式作定语的区别(PPT12-13)（PPT13超链接返回至PPT7）①过去分词做定语与其修饰词之间是动宾关系或过去分词表示的动作以完成。②现在分词作定语表示动作正在发生，与修饰词是主谓关系。③不定式作定语表示将要发生的动作。thehousebeingbuilt/tobebuilt/built正在被建/将要被建/建好了的房子2、Adver
4、bial①Seeingtheteacherenteringtheroom,thestudentsstoodup.②Beingastudent,hewasinterestedinsports.③Havingwrittentheletter,Johnwenttothepostoffice.现在分词作状语时，注意如下三点：1.相当于相应的从句(PPT6-8)Rewritesentences1)Becauseheknewthattherewasadogoutside,thelittleboydidn’topenthedoor.=Knowingthattherewa
5、sadogoutside,thelittleboydidn’topenthedoor.（原因）2)Thecouplewentshopping.Asaresult,theylefttheireldestdaughteraloneathome.=Thecouplewentshopping,leavingtheireldestdaughteraloneathome.(结果）第3页共3页2021-8-43)Timepermitting,Iwillmeetyouforlunch.=Iftimepermits,Iwillmeetyouforlunch.(条件)4)As
6、kingaround,Ifindmanypeoplewillingtopayslighthigherpricesforthingsthatareenvironmentally.=whenIaskaround,Ifindmanypeoplewillingtopayslighthigherpricesforthingsthatareenvironmentally.（时间）3、分词的逻辑主语就是全句的主语Hetraveledontheplanelikethis,keepingthetortoisehiddeninablanket.(keeping的逻辑主语和句子
7、的主语一致，都是he)_______throughthepark,beautifulflowerscouldbeseeneverywhere.(B)A.WalkingB.WhenIwalkedC.WalkD.Walked4、现在分词作状语时有不同的时态与语态1)完成主动式Havingfinishedherhomework,shewenttobed.Havingheardthis,thewomanastronautexpressedhersatisfaction.分词所表示的动作发生在句中谓语动词所表示的动作之前，一般在句中作时间或原因状语用，不能做定语用。
8、2)一般被动式表示正在发生的被动动作,在句中作定语或状语。Thec
