【5A版】初中状语从句精讲.ppt

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1、专题句型状语从句考点揭密中考考点设置典型例题解析课时训练考点揭密在复合句中修饰主句中的动词、形容词或副词，起状语作用的从句叫状语从句。状语从句可置主语之前，也可置主语之后。前置时，从句后用逗号与主句分开；后置时，与主句之间无标点符号。状语从句可分为时间、原因、目的、结果、条件、比较、地点、让步、方式等九类。e.g.Ifyougototheparty,youwillhaveagoodtime.e.g.YouwillhaveagoodtimeIfyougototheparty.引导时间状语：after,before,when,while,until/tillsince,assoonas,nos

2、ooner…than,hardly…when引导条件状语：if,unless,aslongas引导原因状语：because,as,since,for,nowthat引导结果状语：so(that),so…that,such…that引导目的状语：sothat,inorderthat,incase引导让步状语：although,though,eventhough，evenif,while，however,whoever中考考点设置1.时间状语从句(1)引导词：when,while,as,before,after,assoonas,until/till,since.e.g.Motherwa

3、scookingdinnerwhenIreachedhome.(when“当……的时候”）e.g.Whilethegirlwasshopping,theUFOlanded.（While“当……的时候”）e.g.Don’tclosethewindowbeforeyougotobed.(before在……之前）e.g.Ashewasreading,hewaslisteningtotheradio.（As“一边……一边”）e.g.AfterIhaddonemyhomework,Iwenttobed.e.g.TheGreenshaslivedheresincetheycametoChina.(si

4、nce引导的时间壮语从句若用一般过去时，主句则用现在完成时时间壮语从句中若用一般将来时，从句则用一般现在时表示将来，即遵循“主将从现”的原则。e.g.IwillwritetoyouassoonasIgettoBeijing.e.g.Iwilltellhimwhenhecomesback.注意e.g.Iwon’tgotobeduntilIfinishmyhomework.(3)not...until的同义句替换。①not…until在否定句中表示“直到……才”，主句中的动词常用终止性动词,这时till/until可用before替换②till/until在肯定句中表示“直到为止”主句中动词

5、用延续性动词e.g.Iwaitedtill/untilhearrived.(wait是一个延续性动词）e.g.Ididn’tleaveuntil/till/beforeshecameback.（leave是个短暂性动词）practice:1.IwillgotobedassoonasI____myhomework.A.willfinishB.finishingC.finishC4.IwillnotwatchTVuntilIfinishmyhomework.=IwillnotwatchTV_____IfinishMyhomework.before2.Mysister___________(re

6、ad)herbookintheclassroomwhenherteachercamein.wasreading3.I__________(do)homeworkwhilemyparents____________(watch)TVlastnight.wasdoingwerewatching(3)if...not与unless(=if…not…)及or的同义句转换。(2)遵循“主将从现”的原则,(即主句若为一般将来时，从句用一般现在时代替将来。)2.条件状语从句(1)引导词：if,unless.e.g.IfIamfree,Iwillcallyou.e.g.Ifitdoesn’train,

7、wewillgoforawalk.unless是从属连词，它引导条件壮语从句，译作“除非……否则的话”e.g.Youwillbelateforclassunlessyoustartrightnow.除非你现在出发否则的话年上学就会迟到的。e.g.Youwillnotsucceedunlessyouworkhard.小结:“祈使句+or+一般将来时的陈述句”结构中，Or表示转折，译作“否则，不然的话”相当于一个否定的条件状