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1、1.时间状语从句(1)时间状语从句常用when,as,while,before,after,since,till,until,assoonas，以及名词词组theminute,themoment,thefirsttime,eachtime,anytime等用作连词，引导时间状语；等连词来引导。例如：Itwasraininghardwhengottoschoolyesterday.Whilehewasdoinghishomework,thetelephonerang.Ashewalkedalongthelake,hesanghappily.Hehadlearn
2、edalittleChinesebeforehecametoChina.Afterhefinishedmiddleschool,hewenttoworkinafactory.(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。例如：I’llringyouupassoonasIgettoNewYork.Iwilltellhimeverythingwhenhecomesback.Hewon’tbelieveituntilheseesitwithhisowneyes.(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用
3、肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。如果主句用否定式，其含义是“直到……才……”,“在……以前不……”,谓语动词可用瞬间动词。例如：Theyoungmanreadtillthelightwentout.Let’swaituntiltherainstops.Wewon’tstartuntilBobcomes.Don’tgetoffuntilthebusstops.1.（2011北京卷）29.__________volleyballishermainfocus,she’salsogreatatbasketball.A.SinceB.Onc
4、eC.UnlessD.While2.(2011上海卷)36.Ifalotofpeoplesayafilmisnotgood,Iwon’tbothertoseeit,orI’llwait____itcomesoutonDVD.A.whetherB.afterC.thoughD.until3.（2011浙江卷）4.OneFriday,wewerepackingtoleaveforaweekendaway______mydaughterheardcriesforhelp.A.afterB.whileC.sinceD.when4.（2011四川卷）6.Asitrep
5、orted,itis100years_____________QinghuaUniversitywasfounded.A.whenB.beforeC.afterD.since5.Johnthinksitwon’tbelongheisreadyforhisnewjob.A.whenB.afterC.beforeD.since答案：C.解析：考查状语从句。所填词引导状语从句，构成It（will）be+时间段+状语从句，意思是：过多久才将......，选C。6.(2011福建省同安一中高三上学期期中考试)_____Icatchacold,Ihavepaininmy
6、back.A．EverytimeB．ThoughC．EvenD．Where7.（2011•江西南昌一中第一次月考）34．Ifoundherniceandhonest____Isawher．A．forthefirsttimeB．thefirsttimeC．onthefirsttimeD．atfirst8.（山东省邹平一中2010届高三四月月考）—Whenshallwegoplantingtreesinthehill?—______itbeginstorain,sotheydon’tneedwatering.A.NotuntilB.WhileC.TillD.Un
7、less2.条件状语从句(1)条件状语从句通常由if,unless引导。例如：Whatshallwedoifitsnowstomorrow?Don’tleavethebuildingunlessItellyouto.(2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。例如：I’llhelpyouwithyourEnglishifamfreetomorrow.Hewon’tbelateunlessheisill.(3)“祈使句+and(or)+陈述句”在意思上相当于一个带有条件状语从句的复合句。例如：Hurryup,oryou’llbelate
8、.=Ifyoudon’thurryup,you’ll
