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例①Tomwasabouttoclosethewindow______hisattentionwascaughtbyabird.A.whenB.ifC.andD.till［解析］考查固定句型。beabouttodo…when…就要做某事时，突然……A第14讲状语从句例②______youmayhave,youshouldgatheryourcouragetofacethechallenge.A.HoweveraseriousproblemB.WhataseriousproblemC.HoweverseriousaproblemD.Whatseriousaproblem［解析］考查让步状语从句。根据句意“无论你有多么严重的问题，你都应该鼓起勇气去面对挑战。”此处however作连接副词，相当于nomatterhow，后接形容词或副词，意为“无论、不管”，引导让步状语从句，其顺序为“however+形容词/副词+主语+谓语”。C例③______ourmanagerobjectstoTom'sjoiningtheclub,weshallaccepthimasamember.A.UntilB.UnlessC.IfD.After［解析］考查状语从句。句意：“除非我们经理反对Tom加入俱乐部，不然我们应接受他成为其中一员。”因此选unless。B例④Becauseoftheheavytraffic,itwasalreadytimeforlunchbreak______shegottoheroffice.A.sinceB.thatC.whenD.until［解析］考查状语从句。句意为：“因为交通阻塞，当她到达办公室时已经是午休的时间了。”此处应为when引导的时间状语从句。C例⑤Today,wewillbegin______westoppedyesterdaysothatnopointwillbeleftout.A.whenB.whereC.howD.what［解析］句意：今天，为了不遗漏要点，我们从昨天结束的地方开始。主从句都缺少地点状语。where引导地点状语从句。B常见连词：when/while/as;before/after;since;until;assoonas/immediately/themoment/theminute/thesecond;nosooner…than/hardly…when;thefirsttime/everytime/eachtime/nexttime时间状语从句常见连词：(1)if/once如果；一旦；unless如果……不(2)aslongas/solongas/onconditionthat…只要……就……(3)provided(providing)that…/suppose(supposing)that…saythat…/let'ssaythat…假如，如果，假设条件状语从句注意：(1)在时间和条件状语从句中，如果从句用一般现在时，主句用一般将来时。例：Theywillplaybasketballafterschooliftheyfinishtheirwork.(2)unless=if…not,意思是“如果不/没有……”。例：IwillnotattendthemeetingunlessIaminvited.条件状语从句常见连词：because,for,since,as,nowthat,when；inthat…原因状语从句结果状语从句常见连词：so…that…/such…that…注意：如果so…或such…提前放在句首，则主句要部分倒装，that从句保持不变。(1)…so+adj./adv.+that…例：Heissolittleaboythathecan'tliftsuchalittlebox.(2)somany/few/much/little(少)+n．(不可数名词或可数名词复数)+that…例：Theoldmanhadsolittlemoneythathecouldn'tevenbuyacupoftea.(3)sucha/anadj.+n．+that…=soadj.a/an+n．+that…例：Hewassuchacleverboy(=socleveraboy)thathecameupwithagoodideasoon.(4)suchadj.+n．(不可数名词或可数名词复数)+that…例：Theyhadsuchdifficultproblemstosolvethattheywerehavingahardtime.目的状语从句常见连词：(1)sothat/inorderthat+从句(从句用can/could/may/might+动词原形)例：Wegotupearlyinorderthatwecouldcatchthefirstbus.(2)incase/forfearthat/lest以免；以防(从句用should+动词原形)例：Wegotupearlyforfearthatweshouldmissthefirstbus.地点状语从句常见连词：(1)where在……地方=intheplacewhere/intheplaceinwhich例：Makeamarkwhereyouhaveproblems.(2)wherever无论在……地方=nomatterwhere例：Iwillfindhimwhereverhemaybe.让步状语从句常见连词：(1)although/though/while/虽然；尽管.例：Althoughheisrich,heneverwastesacoin.(2)as句型①表语(形容词/名词)+as/though+主语+系动词+主句。注意：名词前不加任何冠词。让步状语从句例：Oldasmyfatheris,hekeepsupwithhisEnglishstudy.Childasheis,heknowssomethingofelectricity.②副词+as/though+主语+谓语动词+主句。例：MuchasIhavetraveled,I'veneverseenamanascapableasTom.③动词原形+as/though+主语+might/may+主句。例：Tryashemight,Tomcouldnotgetoutofthedifficulty.让步状语从句(3)evenif/eventhough(有一定的假设意味)即使，纵然；例：Evenifitsnowstomorrow,weshallstillgoonbusiness.(4)nomatterwhat…，nomatterhow…/however,whatever等；“不管什么；无论如何……”；whether…无论是否……例：Nomatterhowdifficulttheproblemis,shealwaystriesherbesttoovercomeit.方式状语从句常见连词：(1)asif/asthough+从句(从句的虚拟语气与wish后的宾语从句虚拟语气类似)“好像；仿佛”例：ShespeaksEnglishasthoughshewereanativeofNewYork.(2)as正如；表示方式例：Asisknowntoall,Chinaisbecomingstrongerandstronger.比较状语从句(1)as…as…和……一样……例：ChineseisasbeautifulalanguageasEnglish.(2)notas/so…as…不如……一样……；不和……一样……例：Sheisnotashealthyashersister.(3)比较级+than比……比较状语从句【提醒】考生们要对不同状语从句的常见连词进行强化记忆，比如since,once,when,while,as意思很多，用法很多。解题时，理解前后两个句子的意思，理清他们之间的逻辑关系，再选择连词，就会胜券在握！①Ifyouwanttodothejobwell,you'dbetterbemorecareful______youmakemistakes.A.whereB.incaseC.sothatD.when［解析］incase“以免，以防”，句意：你一定要多加小心以免犯错。B②—YouseemtohaveknownDr.Brownforalongtime.—That'strue.______hejoinedourclubfiveyearsago.A.SinceB.UntilC.WhenD.If［解析］since“自从……”，句意：自从5年前他加入我们俱乐部以来我就认识他了。A③Ihavekeptthephoto______Icanseeiteveryday,asitremindsmeofmyuniversitydaysinLondon.A.inwhichB.whenC.whereD.that［解析］主句Ihavekeptthephoto主谓宾都有了，根据句意，紧接着应该是地点状语了；从句Icanseeiteveryday同样也缺少地点状语，因此选where。C④Consideringthatshedidherwork______hermanagerhadinstructed,itwasimpropertocriticizeher.A.asB.untilC.whenD.though［解析］as意为“正如”，表示方式，题意：鉴于她按照经理的吩咐做了她的工作，批评她是不合适的。A⑤Shelefttheoffice______Icouldsaysorrytoher.A.untilB.afterC.beforeD.when［解析］我还没来得及向她道歉，她就离开了办公室。C