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时间:2020-08-01
《高考复习--状语从句课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、状语从句一、状语从句分类时间状语从句地点状语从句原因状语从句目的状语从句结果状语从句条件状语从句让步状语从句比较状语从句方式状语从句时间状语从句when,while,as,after,before,since,till,until,whenever考点一:1.when,while,as的用法:when意为“当/在……时,每当”;while意为“在……期间”,从句的谓语必须是延缓性动词;as意为“一边……一边……”,表主从句谓语同时发生,动词通常为动作动词。如:(1)Hetransplantedthe
2、littletreetothegarden ____itwasthebesttimeforit.(2005上海)A.where B.when C.that D.until(2)-I’mgoingtothepostoffice.-____you’rethere,canyougetmesomestamps?(1999全国)A.As B.While C.Because D.If此外,when---“正在那时、这时”beabouttodo…when…bedoing…when…haddone
3、…when…beonone’sway…when…onthepointof…when…when---“既然”Whydoyoutakeanumbrellawhenitdoesn’train?As---“随着”Astimegoesby,…While---“然而”表对比关系Ienjoymusicwhilemysisterlikessports.2.before的用法:before的本意为“在……之前”,根据具体语境还可理解为“还没来得及/还没有……就……,趁着还没……就……,不知不觉就……,……才……”等。如
4、: (3)TheAmericanCivilWarlastedfouryears____theNorthwonintheend.(2005广东)A.after B.before C.when D.then(4)Someonecalledmeupinthemiddleofthenight,buttheyhungup ____Icouldanswerthephone.(2000全国)A.as B.since C.until D.before3.Itbe…since/before/when…句
5、型:①“Itbe+时间段+since…”表示若从句谓词是非延缓性动词时“自从……以来有多久了”,但若从句谓词是延缓性动词时,则意为“不做……(多久)了”;Eg.ItisthreeyearssincehejoinedtheArmy.Itisthreeyearssincetheylivedhere.②“Itbe+时间段+before…”表示“过……之后才……”,若be是否定式,则表示“没过……就……”。Eg.Itwasthreeminutesbeforetheyansweredit.Itwillbet
6、hreeyearsbeforetheymeetagain.Itwon’tbelongbeforewehaveaholiday.③“Itbe+时间点+when…”表示“当……时,时间是……”。如:Eg.Itwas7o’clockwhenwegotup.(5)Itisalmostfiveyears _____wesaweachotherlasttime.(2005北京春)A.before B.since C.after D.when(6)Thatwasreallyasplendidevening
7、.It’syears ______Ienjoyedmyselfsomuch.(2005安徽)A.when B.that C.before D.since(7)Itwassometime _________werealizethetruth.(2005山东)A.when B.until C.since D.before(8)Itwasevening wereachedthelittletownofWinchester.(2005天津)A.that B.un
8、til C.since D.before (9)–DidJackcomebackearlylastnight?–Yes.Itwasnotyeteighto’clock hearrivedhome(2005福建)A.before B.when C.that D.until4.until和till的用法:…until/till…主句谓语必须是延续性动词,not…till/until…主句谓语是非延缓性动词Until可放在句首,ti
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