初中状语从句精讲课件.pptVIP

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,nosooner…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.MotherwascookingdinnerwhenIreachedhome.(when“当……的时候”）e.g.Whilethegirlwasshopping,theUFOlanded.（While“当……的时候”）

e.g.Ashewasreading,hewaslisteningtotheradio.（As“一边……一边”）e.g.Don’tclosethewindowbeforeyougotobed.(before在……之前）e.g.AfterIhaddonemyhomework,Iwenttobed.e.g.TheGreenshaslivedheresincetheycametoChina.(since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

e.g.IwillwritetoyouassoonasIgettoBeijing.e.g.Iwilltellhimwhenhecomesback.e.g.Iwon’tgotobeduntilIfinishmyhomework.注意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。

(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e.g.Ididn’tleaveuntil/till/beforeshecameback.（leave是个短暂性动词）②till/until在肯定句中表示“直到为止”主句中动词用延续性动词e.g.Iwaitedtill/untilhearrived.(wait是一个延续性动词）

practice:1.IwillgotobedassoonasI__C__myhomework.A.willfinishB.finishingC.finish4.IwillnotwatchTVuntilIfinishmyhomework.before=IwillnotwatchTV_____IfinishMyhomework.

wasreading2.Mysister___________(read)herbookintheclassroomwhenherteachercamein.wasdoing3.I__________(do)homeworkwerewatchingwhilemyparents____________(watch)TVlastnight.

2.条件状语从句(1)引导词：if,unless.e.g.IfIamfree,Iwillcallyou.e.g.Ifitdoesn’train,wewillgoforawalk.unless是从属连词，它引导条件壮语从句，译作“除非……否则