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状语从句的省略一：状语从句中的省略省略句的规则1.当从句的主语和主句的主语一致(或者从句的主语为it)．2.从句谓语中包含be动词．如：bedoing,bedone,betodo,be+adj在此种情况下可以省去从句的主语和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。1.Don’tspeakuntil（youare）spokento.2.I’llbuyaTVsetif（itis）necessary.3.While（Iwas）walkingwalkingaloneinthestreet,Iheardmynamecalled.4.Tomraisedhishandasif(hewas)tosaysomething.二：常见的几种状语从句的省略1.when，while，as,until引导的时间状语从句的省略while(theyare)visitingthecity．theyreeeivedawarmwelcomwhen(hewas)askedwhyhewaslate，hekeptsilent．●注意Afterfinishinghishomework,hewenthomehappily.Beforebeingrepaired,theTVsetneedsacarefulexamination.2.if，unless，once引导的条件状语从句的省略Onee(itis)begun．itmustbedonewell．Unless（youareinvited)tospeak,youshouldremainsilentattheconference.Correctmistakes,ifany.3.though，although,evenif,eventhough引导的让步状语从句的省略Thoughlackingmoney,hisparentsmanagedtosendhimtouniversity.4.asthough，asif，as引导的方式状语从句的省略Heshookhisheadasif(hewas）tosay:“Don’ttrusther”.Shelefttheroomhurriedlyasif(shewas)angry.Hestaredatthegirlasif(hewas)seeingherforthefirsttime.Youshouldfinishthehomeworkas(youare)required.5.than引导的比较状语从句的省略Theysentusmuchmorematerialsthanrequired.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).7.这次展览比预料的有趣.8..她张开嘴好象要大哭起来.9.除非邀请,否则我不会去参加这次晚会.10.明天早点起来,要是不起来的话,你就赶不上第一班车了.11当我在做作业时,我听到有人喊救命.12.他篮球打得即使没你好,也起码一样好.1.When________,themuseumwillopentothepublicnextyear.(complete)2.Theflowershisfriendgavehimwilldieunless_______everyday.(water)3.Theboss,nottheworkersshouldberesponsiblefortheaccident.Theyjustcarriedouttheorderas__(tell4.When_______whattheyneededmost,thekidssaidtheywantedtofeelimportantandloved.(ask)5.Onedaywhile________(work)atthecashregisterinthegiftshop,Isawanelderlycouple.6.When_______(finish),theknotlooksidenticalfromboththefrontandback.7.Theypromisetotakeaction,_____needed,tomaintainfinancialstabilityintheeuroareaasawhole.8.ThebuildingwasstillshakingwhileI_______(walk)alongtheroad.9.Friendshipislikemoney:easiermadethan_____.(keep)10.WhenIwasatyouragemyfathertoldmethatIshouldgoandworkwherever____most.(need)二since，before，after引导的状语从句有时可以变成介词短语或分词短语。如：Theyhadnotmetanymoresinceleaving（=sincetheyleft）school.Havingfinished（Afterhehadfinished）middleschool，sheenteredBeijingUniversity.③原因状语从句如果主从句主语一致，也可以将从句省略为分词短语，介词短语或独立结构。如：Being（=Asheis）theoldest，Billlooksafterhislittlesisters.Becauseofsmoking（=Becausehesmokes）toomuch，Lindadoesn’tlookhealthy.④sothat，inorderthat引导的目的状语从句，若主从句主语一致，可以用动词不定式短语soasto或inorderto代替。如：Ileftearlysoasto（=sothatIcould）catchthefirstbus.⑤sothat，so…that引导的结果或程度状语从句如果主从句主语一致，可以用“enough+不定式”或“too…to”结构代替。如：Tomstudiedhardenoughtopass（=Tomstudiedhardsothathepassed）theexamination.Shewastootiredto（sotiredthatshecouldn't）goanyfarther.⑥if引导的条件状语从句，常可省去从句中的主语和系动词，转换为介词短语、不定式短语、分词短语或独立结构。如：If（itis）possible，Iwillhelpyou.Withherhelp（=IfIhadhelpfromher），Icoulddotheexperiment.⑦as，than引导的比较状语从句中，与主句相同的部分可以省略。如：HeisaheadtallerthanI（amtall）.★When____forhisviewsabouthisteachingjob,Philipsaidhefounditveryinterestingandrewarding.A.askingB.askedC.havingaskedD.tobeasked★Filmhasamuchshorterhistory,especiallywhen_____suchartformasmusicandpainting.A.havingcomparedtoB.comparingtoC.comparetoD.comparedto★Theexperimentshowsthatproperamountsofexercise,if_____regularly,canimproveourhealth.A.beingcarriedoutB.carryingoutC.carriedoutD.tocarryout★Weallknowthat,____,thesituationwillgetworse.A.notifdealtcarefullywithB.ifnotcarefullydealtwithC.ifdealtnotcarefullywithD.notifcarefullydealtwith★When____aboutwhatshethoughtofthemovie,shejustsaiditwasworthseeingasecondtime.A.askedB.askingC.beingaskedD.tobeasked★Inclasses,you’dbetterunderstandasmuchaspossiblewhile_____notes.A.talkingB.talkC.takenD.totake★Onlineshopping,whenproperly_____,cansavealotoftime,moneyandenergy.A.doneB.isdoneC.havingdoneD.doing★Though____ofdanger,sightseeershavebeenflockingtothesitewheretheworld’sbiggestterroristBinladenlived.A.warnedB.warningC.beingwarnedD.havingwarned★Noonecanwalkthewireintheairwithoutabitoffearunless____veryyoung.A.havingtrainedB.trainedC.tobetrainedD.beingtrained★Hisplaywaspopularandeverytime_____aboutit,heowedhissuccesstothesupportofhisfriends.A.talkingB.talkedC.totalkD.whentalking★Thefootballerdidn’tsucceedinscoring,though_____severalchancesbyhisteam-mmates.A.wasgivenB.beinggivenC.givingD.given