高三英语语法复习第二讲状语从句定义:一个_（句子）用作状语时,在语法上叫状语从句。这个句子可修饰主句的谓语，定语，状语或整个句子。状语从句通常由一个连词引起或起连词作用的_词组引起或由名词副词_等引起。分类：状语从句可表示1)_时间2)地点、3)原因4)_目的5)结果、6)条件7)行为方式、8)比较、9)让步等连词:一.表示时间的状语从句可由以下连词引导:1.when,while,as,whenever,before,after,until,till,since,eversince,once,assoonas2．everytime,next/last/eachtime,thefirsttime,themoment,theminute,theinstant3.instantly,directly,immediately4.hardly…when,nosooner…than,beabouttodo…whenItis/hasbeen+一段时间+since从句Itwas/won’tbe+一段时间+before从句二.地点状语从句:where,wherever,anywhere,everywhere.三.原因状语从句:because,as,since/nowthat;seeing(that)由于,consideringthat考虑到,notbecause/that…butbecause/that…四.目的状语从句that(=sothat),sothat,inorderthat,incase,forfearthat,lest.五.结果状语so,that,sothat,so…that…,such…that….六.条件状语从句:if,unless,once,onconditionthat、as/solongas,sofaras(据我所知…),providing/provided(that),given(that)假定,七.方式状语:as,asif/though,justas,ratherthan.八.比较状语从句:than,as九.让步状语从句:Though,although,evenif/though,nomatter,whatever,however,whether…or…,while(=though),as用when,while或as填空:1．_______________weweretalking,MrSmithscamein.2．_____theycamehome,Iwascookingdinner.3．Iwasabouttogotobed_______Iheardsomeoneknockattthedoor.4.________wewerewatchingTV,hewasstudying.5.Heisfat_______hisbrotheristhin.6.______shesang,tearsrandownherface.Conclusion:A:从句为”当……的时候”,从句谓语为延续性动词,主句谓语为非延续性动词(即终止性动词),三者可通用.B当从句的谓语动词为终止性动词,只能用when;表示”正在那时”,也只能用when..C.从句和主句的谓语动词都为延续性动词时,只能用while;while还可作并列连词,表示”而”.D.当强调主句和从句的动作同时发生时,只能用as,译为”一边……一边……;随着……”Before与after:1.HeFinishyourhomework______yougoouttoplay.2.hadleftthetowntheday______shearrived.3.Hehadwalkedthreedays____hefoundwater.4.Itwasnotlong_____helefthishometown.5.Iplayedfootball_____I(had)finishedmyhomework6.PleasetellherI’llcome____Idosomeshopping.7.Itwillnotbelong_____wemeateachotheragain.Conclusion:1.Before作为连词,有多种含义,必须根据上下文作出合理的判断.2.Before与after所引导的时间状语从句中,用现在时表示将来时3.Before与after还可作介词,后接名词或-ing形式.4.Before引导的从句是过去式,主句是过去时或过去完成时;.主句为过去时,after从句可用一般过去时代替过去完成时.till与until:1.Helivedwithhisparents________hegraduatedfromcollege.2.Not____hetoldmedidIknowthetruth.3.Thechildrenwon’t________(come/be)homeuntil/tillit’sdark.4.Itwas_________thewarwasoverthathereturnedtohisland.Conclusion:1．主句为肯定句时,主句的谓语动词应为延续性动词.2.当主句谓语动词为非延续性动词时,谓语动词应用否定式.3.位于句首时.只能用until,不用till.4.not…until可改写为:Itis/wasnotuntil…that强调句.”not+until引导的从句,一同置于强调句中.5.Till与until还可作介词,后接名词.如:Iwaitedtill/until3o‘clock.其它的时间状语从句:1.I__________(be)athisbedsidesincehe_______(become)ill.2.It_________(be)twoyearssincewe_______(begin)tousethismachine.3._______________________hesawthemonster,heturnedpale.4.Thespyhad_________returnedhomethanhewastoldtogotoanothercountry.5.Wehad________returnedhomewhenitrained.6._______hadwebegunwhenwetoldtostop.Conclusion:1.Since表示”自从……以来”,以过去某一时间为起点,持续到现在或过去的某个时候;since...
