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1、The–ingformastheSubject,Object，Predictive,AttributiveandObjectComplementGrammarEvaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.Haveyoueverseenthesesigns?parking,spitting,littering,smoking-ingformsEvaluationonly.Createdw
2、ithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.1.动词-ing形式的构成:是在动词末尾加-ing形式构成,因此又叫动词的-ing形式。如:do-doing,be-being,ask-asking,etc.否定形式:not+-ing构成2.动词-ing形式不能单独作谓语,没有人称和数的变化,但可以有自己的宾语和状语,还有时态和语态的变化。3.动词-ing形式由动词加-ing变化而成,它同时具有名词和动词的特征,在句中可以作主语、宾语
3、等。Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.指出-ing形式在下面句中的成分。Findingwaystogrowmorericehasbeenhislifegoal.Heenjoyslisteningtoviolinmusic.Chinaisadevelopingcountry.Themusicisexciting.Weheardhersinginginherroom.Being
4、ill,shewentbackhome.主语宾语定语表语宾语补足语状语Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.一、动词-ing形式作主语表示经常的、习惯性的动作或状态,谓语动词通常用单数。如：1）Walkingisagoodformofexerciseforbothyoungandold.2）WatchingnewsonTVhasbecomearoutineforme.3）Goi
5、ngtoHangzhoubytraintakesabout16hours.4）Askingawoman’sageisimpoliteinourcountry.Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2.0.0.Copyright2004-2011AsposePtyLtd.2.-ing形式作主语时常后置,此时须用it作形式主语,用形容词或名词作表语。常见的名词或名词短语有:nouse,nogood,fun,hardwork,ahard/difficult
6、job,awasteoftime等;形容词有:dangerous,worthwhile,useless等。归纳:常用-ing形式作主语的句型有：It+be+awasteoftimedoingItis/wasnogood/usedoingItis/washardly/scarcelyworthdoingItis/wasworth/worthwhiledoingThereisnodoing...无法……;不允许……Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientProfile5.2
7、.0.0.Copyright2004-2011AsposePtyLtd.3.在therebeno...结构中作主语,这种结构的意思相当于“Itisimpossibletodo…”。Thereisnosenseindoing做……没有道理Thereis/wasnousedoing做……无意义Thereis/wasnothingworsethandoing没有比……更糟的Thereis/wasnopointdoing做……无意义Evaluationonly.CreatedwithAspose.Slidesfor.NET3.5ClientPro
8、file5.2.0.0.Copyright2004-2011AsposePtyLtd.1)Thereisnohidingofevilbutnottodoit．若要人不知,除非己莫为。2)The
