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第十七章状语从句知识点状语从句的分类1知识点时间状语从句的用法2知识点地点状语从句和条件状语从句的用法3知识点原因状语从句和让步状语从句的用法4知识点比较状语从句和方式状语从句的用法5知识点目的状语从句和结果状语从句的用法6知识详单知识点状语从句的分类1状语从句连词when,while,as,since,till,until,before,after,as soonas,no sooner・・・than,hardlyscarcely-**when,the时间minute,the second,every eachtimeminute,the second,every eachtime地点where,wherever,everywhere条件if,unless,asso longas,in case原因Because,since,as,now that,seeing that,in that,considering that,Though.although.eve.ifthough,让步As・・・as・・・,not thesame.,not so...,thano比较方式as,as ifthough目的so that,in orderthat,in case,for fearthat,lest结果知识点时间状语从句的用法2从属连词用法例句“与……同时,在……期间从.另人工Don ttalk loudwhile asothers areworking ij句常用延续性动词或表示状态作时,请勿大声说话While的词“当……时”,表下主句的动我们至达时,天正下It wasraining whenwe arrived.U作和从句的动作同时或先后发着雨生,从句的动词可用延续性动Whenwhen youread thepoem asecond time,the meaning词,也可用非延续性动词当你再读一遍这首诗,,你will becomeclearer toyou.就更清楚它的含义when youread thepoem asecond time,the meaning当你再读一遍这首诗,,你will becomeclearer toyou.就更清楚它的含义“正当,一边一边,随着”,.随着As timewent on,his theoryproved tobe correct表示两个动作同时发生或某事时间的推移,他的理论被证明是正确的发生时,另一个动作发生了As用于肯定句时,表示“直到……我们将一直等到We shallwait until/till hecomes back.为止主句必须为延续性动他回来词表示“直到……;not...until/till.直到1didnt leaveuntil/till shefinished herhomeworkTill/until才”,主句常用短暂性动词她完成作业.我才离开“自……以来”,主句用一般1have heardolot ofgood thingsabout yousin现在时或现在完成时,从句用一自从我从国外回来,我已经听许多好的from abroad.般过去时事情Since自从我从国外回来,我已经听许多好的from abroad.事情在……以前家之He mustfinish allthe workbefore hegoes home.0Before前他必须完成所有的工作在…之后放学后我们打篮lets playfootball afterschool isover.After球吧【知识拓展】时间状语从句的时态问题:在时间状语从句和条件状语从句中,主句如果使用一般将来时态,从句使用一般现在时表示将来,即所谓的主将从现例如人
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1.m・丫0・叩.我一到北京就给你打电话•如果你不努力学习,你将会落后于其他人Youll fallbehind theothers unlessyou studyhard.如果你不努力学习,你将会落后于其他人Youll fallbehind theothers unlessyou studyhard知识点地点状语从句和条件状语从句的用法3分类从属连词例句where在地方,Where there is awill,thereisa way.有志者,事竟成无论哪里wherever,无论你去哪儿,Wherever yougo,you mustobey thelaw.地点状语从句你都要遵守法律.如果如果;除非,如If Ymake anymistakes,please pointthem outin timeifunless果不我犯错误,请及时指出来Dont askme toexplain unlessyou reallydont.不要让我解释,除非你真的不懂understandDont askme toexplain unlessyou reallydont.不要让我解释,除非你真的不懂understandin case假使,万一Write downher telephonenumber incase youforget.把她的电话号码记下来万一你忘了呢只要,so/as longasYou cango outas/so longas youpromise tobe backbefore你可以出去,只要你答应在点前回来11oclock.条件状语从句如果【知识拓展】引导条件状语从句和宾语从句的区别if引导条件状语从句,表示“如果”,主句用一般将来时态,从句用一if般现在时表示将来例如川.如果明天不下雨,我就去看电If itdoesnt rain,1w goto thecinema tomorrow影
(2)if引导宾语从句,表示“是否”,如果主句是一般现在时,从句可用各种对应的时态;如果主句是一般过去时,从句用过去的某种时态例如我不知道他明天是否会来I didntknow ifhe wouldcome tomorrow.知识点原因状语从句和让步状语从句的用法4分类从属连词例句because因为,H.couldn.hav.see.m.becaus..wa.no.there.{t!l:;F^7能看见我,因为我当时因为,既不在那儿as,since然由于下雨我们都待在家里As itrained,we allstayed athome.,既然大家都来了,现在让Since weare allhere,lets reacha decisionnow我们做决定吧原因.既然大家都来了,现在让Since weare allhere,lets reacha decisionnow我们做决定吧状语由于你已经知道了,我没从句Now that/in Ineednt sayanything inthat youhave knownit.that/seeing有必要说什么了that/considerin•考虑到他很年轻,他Considering thathe isvery young,he doesit verywell既然,由g that做得很不错了于•考虑至他彳艮年Considering thathe isvery young,he doesit verywell lj轻,他做得很不错了让步although/thoug Thoughhe isvery poor,he isvery happy.他虽然很穷,但他很快乐虽然,尽管h他尽管年轻,但很聪明状语Although he is young,he isvery clever*.从句Although heis young,heisvery clever.他尽管年轻,但很聪明。
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