中考复习——状语从句专题中考复习——状语从句专题中考复习——状语从句专题中考复习-—状语从句专题一、中考命题重点考查状语从句的时态，特别是if引导的从句。考查连接状语从句的连词。(常考：if,since,until，or,unless）when和while的区分。中考状语从句考点解读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等连词来引导。1）Whilehe_______________（do）hishomework,thetelephonerang.Ashewalkedalongthelake，he________________（sing）happily。3）Afterhefinishedmiddleschool,he_________（go)toworkinafactory。4）Iwilltellhimeverythingwhenhe_________（come）back。Youshouldfinishyourhomework_______yougoouttoplay.（before/after）6)It________(rain）hardwhenhegottoschoolyesterday。7)Wheneveraperson____difficulties,he________twochoices.Oneistogiveup，theotheristofacethembravelyandtrytoovercomethem.（2014,哈尔滨)A。meets；hadB。meets;willhaveC.willmeet；hasD。willmeet；willhaveItwillbe2years____weseeeachotheragain。（2013,黄石）A。afterB.beforeC.sinceD.when9)____youtoldme,Ihadheardnothingofwhathappened.A.UntilB。ThoughC.WhenD.If10）—Iwonderwhenyou____inNewYork。-Iwillsendane—mailtoyouassoonasI________there。（2013，齐齐哈尔)A.arrive；willgetB。willarrive；getC。willarrive;willgetD.arrive;getYoushouldfinishyourlessons_______yougoouttoplay.A.beforeB。afterC。whenD。whileThenewsecretaryissupposedtoreporttothemanagerassoonasshe______________。A.willarriveB.arrivesC.isarrivingD.isgoingtoarriveThepoliceaskedthechildren_______crossthestreet________thetrafficlightsturnedgreen.A.not;beforeB.don’t;whenC。notto；untilD.not；after考点一：when和while引导时间状语从句When和While的区别①when是atorduringthetimethat，既指时间点,也可指一段时间，while是duringthetimethat,只指一段时间，因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词.②when说明从句的动作和主句的动作可以是同时,也可以是先后发生；while则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生.③由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候,多用while引导,如：a.Whentheteachercamein,weweretalking.当此句改变主从句的位置时,则为:Whileweweretalking，theteachercamein。b.Theyweresingingwhileweweredancing。④when和while还可作并列连词.when表示“在那时”；while表示“而,却"，表对照关系.如：Thechildrenwererunningtomovethebagofricewhentheyheardthesoundofamotorbike.孩子们正要跑过去搬开那袋米,这时他们听到了摩托车