时间状语从句知识讲解.ppt

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1、AdverbialClauses（状语从句）1.AdverbialClausesofTime:（时间状语从句）DifferentKindsofAdverbialClauses:2.AdverbialClausesofReason(原因状语从句）3.AdverbialClausesofConditions(条件状语从句）4.AdverbialClausesofPlace(地点状语从句）5.AdverbialClausesofPurpose(目的状语从句）6.AdverbialClausesofResult（结果状语从句）7.Adverb

2、ialClausesofComparison（比较）8.AdverbialClausesofConcession(让步）9.AdverbClausesofManner(方式状语从句)一、when/while/asWhen+(1)延续性动词e.g.WhenIwasyoung,Ilikeddancing.(2)瞬间性动词(不能用while）e.g.Itwassnowingwhenwegottotheairport．(3)表示“这时”“正在这时候”e.g.Iwaswalkingonthestreetwhensuddenlysomeonepa

3、ttedmeontheshoulder.(4)主从句动作先后发生(不能用while）e.g.WhenIgottothecinema,thefilmhadalreadybegun.While+(1)延续性动词e.g.WhileIslept,athiefbrokein.(2)表示两种情况对比，“然而”“而”e.g.Theyweresurprisedthatachildshouldworkouttheproblemwhiletheythemselvescouldn’t.(3)表示“趁着…时候”(强调主从句动作同时发生).e.g.Strike

4、whiletheironishot.As侧重主从句动作同时发生，常译为①“一边…一边….”e.g.Thestudentstooknotesastheylistened.)②“随着”e.g.Astimegoesby,wehavegainedmoreandmoreknowledge.注意若主句谓语是短暂性动作，从句用延续性动词的进行时态表示在一段时间内正在进行的动作时，三者可以互换！When/While/AswewerehavinganEnglishclass,astrangerbrokein.Practice___________lwa

5、swalkingdownthestreet，Isawsomepolicemen．_______theyheardthenews，theyweresurprised．Theyshoutedslogans____theypassedthesquare.When/While/AsWhenas二、before常见句型:Itwillbe+一段时间+before…….Itwas+一段时间+before…….Itwon’tbelongbefore……Itwasn’tlongbefore……肯定句意为“多长时间后才…”否定句意为“用不了多长时间就…”

6、Itwillbealongtimebeforewefinishthisdictionary.我们需要很长的时间才把这部词典编译完。Itwasnotlongbeforethethiefwascaught.小偷不久就被抓住了。beforeItwillbehalfayearbeforeIcomeback.Itwon’tbehalfayearbeforewemeetagain.Wesailedfourdaysandnightsbeforewesawtheland.Wehadn’trunamilebeforehefelttired.肯定句“才”

7、否定句“就”itwillbe+一段时间before......多久之后才...itwon’tbe+一段时间before......不久就....1>.<2004福建卷>Scientistssayitmaybefiveorsixyears________itispossibletotestthismedicineonhumanpatients.2>.<2007江西卷>Hewastoldthatitwouldbeatleastthreemonths_________hecouldrecoverandreturntowork.3>.<200

8、0NMET>Someonecalledmeinthemiddleofthenight,buttheyhungup_________Icouldanswerthephone.beforebeforebefore三、afte