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1、TheAdverbialClause(状语从句)一,什么是状语从句用句子作状语,来说明一件事情发生的时间,地点,原因,条件,结果等,可修饰主句中的动词、形容词或副词。二,状语从句的分类时间,地点,条件,原因,让步,目的,方式,结果,比较等9种。四,学习方法1,弄清每种状语从句的连接词(既从属连词).2,弄清不同连接词之间的区别.三,状语从句的位置:一般放在句首或句末。放在句首时,从句后常用逗号分开。一:时间状语从句1,连词:when,while,as,till/until,before,after,since,assoonas等.2.注意点:①w
2、henVSwhileEg:Whenthefilmended,thepeoplewentback.Pleasedon’ttalksoloudwhileothersareworking.问题一:when,while和as的用法When表时间点也可表时间段,while只表时间段,as强调伴随,随着…主句是过去进行时,过完或wasabouttodo等结构时,从句用when引导,表“突然”Hewaswalkingalongthestreetwhenheranintoanoldfriend.Iwashalfwaybackhomewhenmymothercat
3、chupwithme.when的两个句型Sbisabouttodosthwhen(suddenly)---(某人正要干---的时候突然---)Sbisdoingsthwhen(suddenly)---(某人正在干---的时候突然---)②as的用法:表示“一边---,一边---”When表示“既然” =since,consideringthatEg:Whydoyouwanttofindanotherjobwhenyoualreadyhaveagoodone?Eg:Ashegrewold,helostinterestineverythingexce
4、ptgardening.While---在……期间,往往指一段时间。WhilewewereinAmerica,wesawhimtwice.Whileweweretalking,hecamein.Strikewhiletheironishot.While---表示一种不满情绪,意思是这边在干某种重要的事,而另一边在享受等。Wearecleaningtheclassroomwhiletheyareplayingthefootball.Thesoldierfacesthepowderwhilethebeautypowdertheface.问题二:bef
5、ore的运用1.Before与can连用,解释为“还来不及…”BeforeIcouldexplain,heshoutedatme.2.“Itis+时间段+before…”解释为“…时间才”ItwasalongtimebeforeIgottosleepagain.3.否定句Itisnotlongbefore…,解释为”不久”Itwon’tbelongbeforeyouareofage.After---在……之后Thecustomerlefttheticketcounterafterhehadaquarrelwiththeticketagent.Th
6、eplanetookoffaftertheairtrafficcontrollergaveclearance.问题三:since的用法SincetheWorldCupbegan,allofthewinningteamshavebeenfromEurope.Itismanyweekssincewelastmet.(主句若是一段时间,则用一般时)ShehaslivedinParissinceshewasateacher.她不当老师后一直住在巴黎.总结:句型:itis/hasbeen+一段时间+since+从句ItisthreedayssinceIle
7、ftBeijing.Ithasbeen10yearssinceIsmoked.句型:itis+一段时间+before+从句(过了多久才---)Eg:Itwas7yearslaterbeforeIgotmarried.问题四:till和until的用法表示“一直到…”,主从句都用肯定式;表”直到…才”,主句用否定式.Heworkeduntilitwasdark.Hedidn’tgotosleepuntilitwasdark.Theydidnotmetagainuntilthewarended.Notuntilthewarendeddidtheyme
8、etagain.Itwasnotuntilthewarendedthattheymetagain.总结:not…until=Itisno