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1、状语从句Adverbialclauses定义：在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。准确掌握每一个连词的含义是掌握状语从句的关键。同时要注意主从句的时态呼应。状语从句一般分为九大类状语从句类别: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方式状语从句比较状语从句让步状语从句3.地点状语从句地点状语从句只有两个连词:Where,whereverWhere---在……地方Putthemedicinewhereyou
2、caneasilygetit.Wherethathighbuildingstands,thereusedtobesomelow,desertedhouses.Wherethereisawill,thereisaway.Wherever---无论哪里Hefollowsherwherevershegoes.Whereveryouare,Iwillberighttherewaitingforyou.2.条件状语从句引导状语从句的连接词有:If,unless,aslongas,incase,providedth
3、at,onconditionthatIf---如果Ifyoudon’thurryup,youwillmisstheplane.Ifitsnowstomorrow,theflightwillbecanceled.Ifyouleaveat6o’clocktomorrowmorning,you’dbettergettobednow.Unless---如果不,除非=ifnotWecan’tgetthereontimeunlesswebooktheearliestflight=Wecannotgetthereon
4、timeifwedon’tbooktheearliestflight.Don’ttroubletroubleunlesstroubletroublesyou.Hewillnotjoinusunlesshechangeshismind.Aslongas---只要Wewillsucceedaslongaswekeepontrying.Youcan’tplaygamesaslongasyouremembertherules.Amanisnotoldaslongasheisseekingsomething.As
5、(so)faras---据……所知AsfarasIknow,hespeaksEnglishverywell.As/SofarasIknow,heisanexpertonDNA.Incase---假使,如果Theplanecannottakeoffincaseitrains.Sendusamessageincaseyouhaveanydifficulty.Providedthat如果,有时省略thatTheplanewillbeingoodconditionprovidedthatitistakencar
6、eofcarefully.Youcanbecomeastewardessprovidedthatyouareingoodshapeandyouhavegotthepropereducation.Onconditionthat---条件是…Hesaidthathewouldcometothemeetingonconditionthatnooneaskedhimtospeak.Themotherpromisedtothesontobuyhimatoyairplaneonconditionthathepass
7、eshisEnglishtest.注:主从句的动作发生在将来时，则主句用将来时,从句用一般现在时。Ifhearrivestomorrow,Iwillbewaitingforhimattheairport.Hesaidhewouldnotleaveunlessitwasfinenextday.8.让步状语从句引导让步状语从句的连词有：Although,though,as,evenif,eventhough,nomatter,however,whatever,while,whether（1）though,a
8、lthough表示“虽然，纵然”之意。这两个连词意思大致相同，在一般情况下可以互换使用。在口语中，though较常使用，although比though正式，二者都可与yet,still或nevertheless连用，但不能与but连用。例如：Though/Thoughhewaswornout,(still)hekeptonworking.虽然他已经精疲力竭了，但仍然继续工作。Although/Thoughheisveryold,(yet)h
