小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com第03讲动词ing形式作主语1．了解动词ing形式作主语的概念和用法。2．可以根据本节课的内容来完成一些习题。1、关于动词ing形式的基本情况(1)．动词ing形式是动词的一种非谓语形式，包括现在分词和动名词两种。动词ing形式在句中的语法作用：动名词在句中作主语、宾语、表语和定语，现在分词在句中作状语、宾语补足语和定语。(2)．动词ing形式的时态和语态。Readingaloudisagoodwaytolearnalanguage.大声朗读是学习语言的一种好方法。Havingstudiedhislessonsveryhard,hepassedtheexam.努力学习了功课,他通过了考试。Thebuildingbeingbuiltnowwillbefinishednextmonth.正在建设的建筑物下个月将完工。Havingbeenlaughedatforhislameness,theboybecameshyandinhibited.那男孩因跛脚被人讥笑,变得羞怯。【归纳用法】2、动词ing形式作主语(1)．动词ing形式作主语Sayingisonething,anddoingisanother.说是一回事，而做是另一回事。Havingawalkeverydayhelpstomakeonekeephealthy.每天散步有助于一个人保持健康。【归纳用法】动词ing形式作主语，往往表示经常性、习惯性的动作，通常置于句首。[名师点津]动名词作主语时，谓语动词用单数。Climbingmountainsisreallydifficultfortheold.对于老人来说爬山确实困难。小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com(2)形式主语it代替动词ing形式作主语。Itisawasteoftimepersuadingsuchapersontojoinus.劝说这种人加入我们是浪费时间。Itisnogood/useregrettingforthepast.悔恨过去是没用的。【归纳用法】此类句式常见的有：It'sawasteoftimedoingsth.做某事是浪费时间It'suseless/worthwhiledoingsth.做某事没用/是值得的It'snogood/use/fundoingsth.做某事没好处/没用/没意思3、动词ing的复合结构作主语动名词的复合结构作主语。形式通常有两种：Theircomingtohelpwasagreatencouragementtous.他们前来帮忙对我们来说是巨大的鼓舞。His/Tom'sbeinglatemadetheteacherveryangry.他的/汤姆的迟到使老师很生气。Jerry'snotarrivingontimemadethepeoplepresentangry.杰里未能按时到达令在场的人很生气。【归纳用法】(1)作主语的动词ing的复合结构的肯定形式为：形容词性物主代词/名词的所有格＋doing...。(2)作主语的动词ing的复合结构的否定形式为：形容词性物主代词/名词的所有格＋notdoing...。1．Inrecentyears,________(rent)clotheshasbecomeanincreasinglypopulartrendamongpeopleofallages.2．_______(slide)intothehabitwaseasy,butitwasdifficulttoquitthehabit.3．_____________(examine)twiceayear,whetheritisacar,abusoratruck,istherulethateverydrivershouldobeyinthiscity.4．________(digitise)ancientartallowsustoexplorethepracticesoflongago.5．AsIgetolder,cominghomeand______(be)withmyentirefamilyisthemostimportantpartofit.6．________(be)abletoappreciateartisverysatisfying.7．________(visit)artgallerieshelpsyouunderstanddifferentcultures.8．________(draw)realisticportraitsofpeopleisverydifficult.9．________(add)BeijingOperatothebasiceducationinChinaisabigsteptopromotetraditionalart.10．_________(expose)tostrongsunlightcanbeharmfultohumanskin.小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com11．________(design)agreatflagisverydifficult,asyouaretryingtosqueezeawholenationintoasmallbox.12．His________(come)latemadetheteacherveryangry.13．________(get)involvedinanewandemergingbusinesscanberiskyandalsobeprofitable.14．________(adapt)toschoollifequicklyisimportantforfreshmen,whichwillinfluencetheirperformance.15．Itisnouse______________(reason)withhim.16．________(turn)18alsochangedthewaythatsocietyviewedme.17．________(attend)trainingclassesmeanscostingthemmuchmoney.18．Beforeyoubegin,it’sworthwhile___...