状语从句中的省略

简单句的省略,1.省略主语。(You)Comeinplease.(You)Removeclothingusingscissorsifnecessary.2.省略谓语或谓语的一部分。(Isthere)AnythingIcandoforyou?(Is)Anybodyhere?,状语从句的省略,观察思考,1.Unless_tospeak,youshouldremainsilentattheconference.A.invitedB.invitingC.beinginvitedD.havinginvited2.While_aloneinthestreet,Iheardmynamecalled.A.walkedB.walkingC.walkD.beingwalked3Tomraisedhishandasif_something.A.saidB.sayC.sayingD.tosay,.,分析：Unless_tospeak，是条件状语从句的省略，其之间省略了youare,原句可变为：Unlessyouareinvitedtospeak,youshouldremainsilentattheconference,分析:While_aloneinthestreet,是时间状语从句的省略，原句可变为：WhileIwaswalkinginthestreet,Iheardmynamecalled.,.,分析：asif_something.方式状语从句的省略，原句可变为：Tomraisedhishandasifhewastosaysomething,归纳总结,1.（You)dontspeakuntilyouarespokento.2.Shestoodatthegateasifshewaswaitingforsomeone.3.WhileIwaswalkingaloneinthestreet,mynamewascalled.4.WhileIwaswalkingaloneinthestreet,Iheardmynamewascalled.5.Hewasaswimmerwhenhewasachild.6.IllbuyaTVsetifitisnecessary.,省略规则,当从句的主语和主句的主语一致(或者从句的主语为it)从句谓语中包含be动词,重难点解析,哪些谓语结构中包含be动词？被保留的部分是什么？,.,1.Dontspeakuntilyouarespokento.2.Shestoodatthegateasifshewaswaitingforsomeone.,bedone,spokento,bedoing,waitingforsomeone,3.Tomraisedhishandasifhewastosaysomething.4.IllbuyaTVsetifitisnecessary.5.Hewasaswimmerwhenhewasachild,betodo,tosaysomething,主系表,necessary,主系表,achild,进行时结构：bedoing,被动语态：bedone,将来时:betodo,主系表结构：be+名词/形容词（短语）/介词短语因此在省去从句的主语和be动词保留be之后的部分，被保留部分常为现在分词、过去分词、不定式、形容词等。,通过以上例句我们可以总结出含有be动词的结构:,特别关注,若从句的主句是it或与主句的主语相同，且在谓语中含有be时，常省略从句的主语和be。被保留部分常为现在分词、过去分词、不定式、形容词等。,1._(在北京的时候),IpaidavisittotheSummerPalace.2._(当是个年轻人的时候),AbrahamLincolnwasastorekeeperandapostmaster.3.Anewhousewillbebuiltif(有必要的话）4._(除非修理),themachineisofnouse.5._(要是给更多的关注),Theboycouldhaveturnedoutbetter.6.Agirlstoodatthegateoftheschoolasif_(跟老师讲话).,When/WhileinBeijing,When/Asayoungman,po