状语从句中的省略

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.beingwalked3．Tomraisedhishandasif______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)don’tspeakuntilyouarespokento.2.Shestoodatthegateasifshewaswaitingforsomeone.3.WhileIwaswalkingaloneinthestreet,mynamewascalled.4.WhileIwaswalkingaloneinthestreet,Iheardmynamewascalled.5.Hewasaswimmerwhenhewasachild.6.I’llbuyaTVsetifitisnecessary.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.Don’tspeakuntilyouarespokento.2.Shestoodatthegateasifshewaswaitingforsomeone.bedonespokentobedoingwaitingforsomeone3.Tomraisedhishandasifhewastosaysomething.4.I’llbuyaTVsetifitisnecessary.5.Hewasaswimmerwhenhewasachildbetodotosaysomething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.Hehasnomoney.______(要是有的话),hewillgiveus.4._____________(除非修理),themachineisofnouse.5._______________________(要是给更多的关注),Theboycouldhaveturnedoutbetter.6.Agirlstoodatthegateoftheschoolasif______________________________(跟老师讲话).When/WhileinBeijingWhen/AsayoungmanIfanyUnlessrepairedIfgivenmoreattentiontotalkingwithateacher课后检测