状语从句重点难点归纳

RevisionofConjunctions连词一、概念在句子中用来连接两个或两个以上的词、短语或句子的词，叫连词。二、分类1.按构成形式分类：简单连词：andbeforeafterbutfor关联连词：both...andeither...or...not...butneither...nor...分词连词：consideringthatprovidedthatprovidingthatsupposethatsupposingthat复合连词：asifasthoughevenifeventhoughexceptthatbutthatas/solongas2.按性质特点分类：并列连词和从属连词并列连词：用来连接并列的词、短语和句子的连词。主要表示两个分句之间的并列关系、转折关系、选择关系和因果关系的连词。如：属性连接词并列关系and,notonly...butalso...,neither...nor..选择关系or,either...or...,otherwise,orelse转折关系but,while,when,yet,still,however(副词）因果关系for,so,thus,therefore(副词）从属连词：用来引导从句，一般连接主句与从句并修饰或说明主句的连词。从属连词通常引导名词性从句和状语从句。引导名词性从句的从属连词有：whether/if/thatWhetherwewillcanceleveningclassesdependsonthecomingeducationpolicy.Thereasonwhywewillcanceleveningclassesisthatstudents’burdensareoverloaded.状语类别从属连词时间when,whenever,as,while,before,after,till(until),since,eversince,once,assoonas,soonafter,themoment,theminute,immediately等，eachtime,everytime,lasttime,bythetimenosooner…than,hardly…when地点where,wherever原因because,as,since,considering/seeingthat,nowthat目的sothat,inorderthat,forfearthat,incase,lest结果sothat,so…that,such…that,withtheresultthat条件if,unless,as(so)longas,as(far)as,incase,supposethat,supposingthat,provided/providingthat,onconditionthat比较as…as,notas(so)…as,than让步though,although,evenif,eventhough,as,however,whatever,whenever,wherever,whoever,whether…or,nomatterwho/what/which/where/when/whether/how方式as,asif,asthoughRevisionoftheAdverbialClauses状语从句九种状语从句1.时间状语从句2.地点状语从句3.原因状语从句4.条件状语从句5.让步状语从句6.结果状语从句7.目的状语从句8.方式状语从句9.比较状语从句九种常用的状语从句及其常用的连接词1.时间状语从句when,while,as,before,after,since,once,everytime,eachtime,anytime,thefirst/second…/lasttime,bythetime,,assoonas,themoment,theminute,theinstant,thedayimmediately,directly,instantly,hardly/scarcely…when/before,nosooner…than,till,until,not…until一.....就......区别九种常用的状语从句及其常用的连接词where,whereverbecause,since,as,for,nowthat,inthat（因为）consideringthat,seeingthatif,unless,as(so)longas,假如；如果：onconditionthat,providedthat,providingthatsupposethatsupposingthat2.地点状语从句3.原因状语从句4.条件状语从句九种常用的状语从句及其常用的连接词6.结果状语从句sothat,so…that,such…thatsothat,inorderthat,incase,forfear(that…）（注意:虚拟）as（正如，正像）,asif/asthoughthan,as…as,notso/as…as,the+比较级…,the+比较级…7.目的状语从句8.方式状语从句9.比较状语从句5.让步状语从句although,though,as,eventhough/evenif,while(虽然）,nomatter+which/what/when/where/who/how,whichever,wherever,whatever,whoever,whenever,however,whether…or；用横线划出下列句子中的状语从句，并指出是哪种状语从句：1.Childassheis,sheknowsalotofthings.2.ThemoreIcandofortheclass,thehappierI’llbe.3.Hetalksasif(asthough)heknewallaboutit.4.Heissuchagoodteacherthatthestudentsloveandrespecthim.5.Ishallgototheparkunlessitrains.6.NosoonerhadIgothomethanitbegantorain.让步比较方式结果条件时间7.Wherethereiswater,thereislife.8.Hestudiedhardsothathecouldcatchupwithhisclassmates.9.Sinceyouareverybusy,Iwon'ttroubleyou.10.Evenif(though)Ifail.I’llneverloseheart.11.Onceyoubeginthework,youmustcontinue.12.Althoughthesunwasshining,itwasn’tverywarm..用横线划出下列句子中的状语从句，并指出是哪种状语从句：地点目的原因让步时间让步1、when,while,as的区别2、itis…since…和itis…before…3、because,as,for,since的区别4、状语从句倒装5、状语从句的省略。1.when可用来引导时间状语从句，意为“当……的时候”从句的谓语动词可以是延续性的，也可以是终止性的。(区别while)如：Whenthefilmended,theywentback.2.When常用于下列句式：when为并列连词意为“就在这时”。bedoing…whenbeabouttodo…whenbeonthepointofdoing...when…haddone…when1.when,while,as（一）连接词when的用法小结1.while引导时间状语从句，意为“当……的时候”；从句的动作必须是延续性的，(区别when)如：Pleasedon’ttalksoloudwhileothersareworking.2.while引导时间状语从句,意为：趁…的情况赶紧做Strikewhiletheironishot.3.while引导让步状语从句，意为“尽管，虽然”，相当于althoughWhileIadmitthattheproblemsaredifficult,Idon’tagreethattheycan’tbesolved.4.while作为并列连词，意为“而，却”，表示对比。JanewasdressedinbrownwhileMarywasdressedinblue.（二）连接词while的用法小结1.as可用来引导时间状语，意为“一边…一边”；“随着”Shesangasshewalkedhomealltheway.(一边…一边）Shewasdoingherhomeworkasshewaslisteningtothemusic.Asshegrewolder,shebecamemorebeautiful.（随着）Asthedaywenton,theweathergotworse.2.as引导原因状语从句，意为“因为、由于”Assheisfreetoday,shewouldliketodosomeshopping.3.as引导让步状语从句（从句必须倒装）意为“尽管”。Tiredashewas,herefusedtotakearest.（尽管）Hardasheworked,hecan’tworkouttheproblem.Childasheis,heknowsalot.Tryashemight,hewouldn’tsucceed.（三）连接词as的用法小结注意：as从句通常将作表语的adj/n.、作状语的adv、作谓语的do(情态动词后的动词原形)提到句首,但单数名词前的冠词必须省略。）when,while,as这三个连词都可表示“当……的时候”。1)When通常表示一个时间点，如：Whenhecamein,wewerehavingsupper.2)while则只表示一个时间段。它所引导的时间状语从句中的时态常用进行时态。如：Whilehewaseatinghisbreakfast,heheardthedoorbellring.3)as则强调主句和从句的动作在同一时间进行，表示“一边…一边…”;也可表示“随着……”(with结构的互换）。Shesangasshewalkedalong.Astheelectionapproached,theviolencegotworse.连接词when,while,as的用法区别：2.Itis…before…和itis…since…1）Itwillbe/＋时间段＋before…Itwillbetwoyearsbeforeheleavesthecountry.2）Itwas+时间段+before…Itwasthreeweeksbeforehecameback3）Itwillnotbe+时间段+before…Itwon’tbelongbeforeshecomesback4）Itwasnot+时间段+before…Itwasn’tlongbeforeheleftthecountry.“要过……才会……”“过了……才”“要不了…就会……”“没过……就……”Itis…before…结构从句和主句的时态：1.一致：过去式2.时态退一格：主句为将来时，从句为一般现在是(1)从句常用一般过去时,主句常用现在完成时或完成进行时（表示时间段时，可用一般现在是）。(2)固定句型：Itis/hasbeen＋段时间＋since＋一般过去时。Itis…since…结构Itis/hasbeen＋时间段＋since…如：Itis/hasbeenthreeyearssinceshejoinedthearmy.主句和从句的时态：3.because,as,for,since表“因为”的区别1、because表示事情发生的直接原因或理由，它的语气很强。Hedidn’tcometoschoolyesterdaybecausehew