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1、大学英语四级语法复习课时间状语从句时间状语从句的形式Whenthephonerang,thebabywokeup.Whenthephonerang是一个时间状语从句。状语从句是从句的一种,它必须依附于一个独立分句(或主句)。Thebabywokeupwhenthephonerang.如果状语从句在主句前,两个分句间要用逗号隔开。用时间状语从句表示时间关系AfterAftershegraduates,shewillgetajob.Aftershegraduated,shegotajob.BeforeIwillleave
2、beforehecomes.Ileftbeforehecame.用时间状语从句表示时间关系WhenWhenIarrived,hewastalkingonthephone.WhenIgotthere,hehadalreadyleft.Whenitbegantorain,Istoodunderatree.WhenIwasinChicago,Ivisitedmyuncle.WhenIseehimtomorrow,Iwillaskhim.when=atthattime注意:不同的时态表示不同的时间关系。用时间状语从句表示时间
3、关系WhileasWhileIwaswalkinghome,itbegantorain.AsIwaswalkinghome,itbegantorain.While,as=duringthattime用时间状语从句表示时间关系BythetimeBythetimehearrived,wehadalreadyleft.Bythetimehecomes,wewillhavealreadyleft.Bythetime=oneeventiscompletedbeforeanotherevent注意过去完成时和将来完成时在主句中的
4、用法用时间状语从句表示时间关系SinceIhaven’tseenhimsinceheleftthismorning.I’veknownhereversinceIwasachild.Since=fromthattimetothepresent注意:主句中使用现在完成时用时间状语从句表示时间关系UntilTillWestayedthereuntilwefinishedourwork,Westayedtheretillwefinishedourwork.Hedidn’tcomehomeuntil12o’clock.=tot
5、hattimeandthennolonger用时间状语从句表示时间关系AssoonasonceAssoonasitstopsraining,wewillleave.Onceitstopsraining,wewillleave.=whenoneeventhappens,anothereventhappensafterwards.用时间状语从句表示时间关系AslongasSolongasIwillneverspeaktohimagainaslongasIlive.Iwillneverspeaktohimagainsolo
6、ngasIlive.=duringallthattime,frombeginningtotheend用时间状语从句表示时间关系WheneverEverytimeWheneverIseeher,Isayhello.EverytimeIseeher,Isayhello.Whenever=Everytime用时间状语从句表示时间关系ThefirsttimeThelasttimeThenexttimeThefirsttimethatIwenttoNewYork,Iwenttoanopera.Isawtwoplaysthela
7、sttime(that)IwenttoNewYork.Thenexttime(that)IgotoNewYork,I’mgoingtoseeaballet.firstThelasttime(that)next冠词用法的基本原则原则一:当你知道或认为听者熟悉你说谈论的事物和人时,用the原则二:用于表示概括时,复数可数名词或不可数名词前不能加the.原则三:使用单数可数名词时,一定要加⑴a或an(one,each,every);⑵the;this或that;⑶物主代词或所有格(my,Jim’s)。冠词用法的基本原则练习
8、:判断正误Asunisbrighttoday.Pleaseopenadoor.Theapplesaremyfavoritefruit.ThegoldisametalIdroveacar.Afew和fewer,Alittle和Little的用法AfewShehasbeenhereonlytwoweeks,butshehasalreadymadea