《状语从句重点难点》PPT课件

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1、状语从句重点难点知识点拨时间状语从句(AdverbialClauseofTime)1.引导时间状语从句的连接词(1)表示“一…就…。”的结构assoonasnosooner…than…/hardly(scarcely/barely)…when…Assoonasthemotherheard/hadheardthenewthathersonwaskidnapped,shefainted.Hehadhardly/scarcely/barelyarrivedwhenshestartedcomplaining.Thesunhadnosoonerstartedto

2、shinethanitwascloudedoveragain.Hardly/Scarcely/Barelyhadhearrivedwhenshestartedcomplaining.Nosoonerhadthesunstartedtoshinethanitwascloudedoveragain.时间状语从句(AdverbialClauseofTime)1.引导时间状语从句的连接词(1)表示“一…就…。”的结构themoment/theminute/thesecond/theinstantdirectly/instantly/immediatelyThe

3、moment/Theminute/Thesecond/Theinstanthesawthebuildingonfire,hedialed999.Directly/Instantly/Immediatelyhethrewtheletterintotheletterbox,herememberednothavingputonastamp.时间状语从句(AdverbialClauseofTime)1.引导时间状语从句的连接词(2)其他引导时间状语从句的连接词thefirsttime/thelasttime/nexttime等名词短语everytime/eac

4、htime等名词短语bythetime引导时间状语从句，主句谓语动词用完成时。ThefirsttimeIsawawomanopeningthedoorforaman,Iwasverysurprised.EachtimeIwenttoaformaldinner,Idressedupcarefully.Bythetimetheambulancearrived,theoldwomanhadcometo.Bythetimehegraduatesfromhighschool,hewillhavelearntEnglishfor10years.时间状语从句(Adv

5、erbialClauseofTime)2.aswhilewhen的用法When/whileourEnglishteacherwasexplainingthegrammartous,theheadmastercameinandstoppedhim.OurEnglishteacherwasexplainingthegrammartouswhentheheadmastercameinandstoppedhim.(1)when表示时间点或时间段，while只能表示时间段。while引导从句中的动词常为延续性动词，可以用进行时。Assheentered,sher

6、espondedpleasantlytotheinterviewer’sgreeting.Asthedaywenton,theweathergotworse.(2)as强调伴随，常指两个动作同时发生。若从句表示“随着…(时间)的流逝，只能用as。时间状语从句(AdverbialClauseofTime)2.aswhilewhen的用法Hewaswalkingalongthestreetwhenheranintoanoldfriend.IhadreadonlyafewlineswhenIheardthebellringing.Hewasabouttore

7、turntothepath,whenhesawarivernearby,sohewenttohaveacloserlook.(3)当主句是过去进行时，过去完成时或was/wereabouttodosth.等结构时，从句用when引导，且从句中谓语动词通常是瞬间动词的一般过去时。这时when作“这时/正在那时，突然…”解释。时间状语从句(AdverbialClauseofTime)3.afterbefore的用法Heboughtahouseafterhesold/hadsoldhiscar.Beforeshewenttotheinterview,shem

8、ade/hadmadetwojourneys.(1)after从句和before从句中的时态。