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1、状语从句定义:状语从句是句子的状语由一个从句充当,来修饰主句中的动词,形容词或副词等。状语从句都由从属连词引导,与主句连接,放在句末时,一般不在前面加逗号。分类:状语从句根据它表示的意思可分为时间,原因,条件,比较,结果,目的等类。1.时间状语从句:是由when,as,while,after,before,since,until,assoonas等从属连词引导的状语从句。时间状语从句中的谓语动词不能用一般将来时,只能用一般现在时表示将来发生的动作或存在的状态。如:IwillcallyouassoonasIarrivethere.2.原因状语从句:because,sin
2、ce,as和for都表示原因。常常令我们不知该用哪个好。我们来比较一下。because语势最强,回答why提出的问题,用来说明人所不知的原因。当能够很明显的看出原因或人们已知原因,就用as或since。如:Idon'tlikethatcoat,becausethecolourlooksterrible.由because引导的从句如果放在句末,且前面有逗号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。如:Heisnothere,because/forhismotherisill.3.目的状语从句:表示目的状语的从句可以由inord
3、erthat,sothat,等词引导。如:Youmustraiseyourvoicesothat/inorderthateverybodycanhearyouclearly.4.结果状语从句:结果状语从句常由so...that或such...that引导,要掌握和区分这两个句型,首先要了解so和such后面分别跟什么词。such是形容词,修饰名词或名词词组,so是副词,只能修饰形容词或副词。so还可与表示数量的形容词many,few,much,little连用,形成固定搭配。如:TheboxissoheavythatIcan'tcarryit.5.让步状语从句:是由t
4、hough,although引导的状语从句。though,although和but不能同时使用。如:Althoughitrained,theyhadagoodtime.练习:1.Shewillfindhimakindmanwhenshe_________him. A.knows B.know C.willknow D.isgoingtoknow 2.We'llgooutforawalkassoonasit________. A.stopsraining B.raining C.stoptorain D.rain 3.Thefil
5、mwas_____interesting_____everyonewantedtoseeitagain. A.too,to B.so,that C.not,until D.very,that 4.Wedon'tunderstandthepassage______thereisfewwordsinit. A.and B.if C.though D.because 5.Youaresuretopasstheexam_______youstudyhard. A.if B.though C.that D.when 6
6、.Ifyou_____freetomorrow,wewon'tgoforapicnic. A.aren't B.won'tbe C.weren't D.don't 7.WhatwasJimdoing_______theteachercamein? A.while B.and C.when D.but 8.Youmuststop______thepolicemansay:"stop!" A.that B.if C.then D.until 9.--TheboyfailedtopasstheEnglishexam
7、ination. --______hedidn'tworkhard. A.If B.Because C.When D.So 10.I'llgoforawalkwithyouifit______tomorrow? A.won'train B.doesn'train C.willrain D.rain实践:1.Igetup______halfpastsixeveryday. A.in B.on C.at D.for 2.IheardRobin________anEnglishsonglast