中考专题复习状语从句ppt课件.ppt
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1、中考专项复习专题十二中考专项复习专题十二状语从句状语从句什么是状语?什么是状语从句?什么是状语?什么是状语从句?He left his hometown ten years ago.用来修饰动词、形容词、副词以及全句的句子成分,用来修饰动词、形容词、副词以及全句的句子成分,即为状语即为状语(adverbial modifier)。He left his hometown when he was a teenager.由句子来充当状语的成分,即为由句子来充当状语的成分,即为状语从句。状语从句。主语 谓语宾语状语u陈述句语序u时态u引导词 状语从句同状语从句同副词、介词短语副词、介词短语等作状语一
2、样,用等作状语一样,用于修饰谓语或整个句子,说明它发生的于修饰谓语或整个句子,说明它发生的时间、地点、时间、地点、方式、条件、原因、目的、结果方式、条件、原因、目的、结果等,即等,即在复合句中,在复合句中,状语从句有其不同的种类和意义。状语从句有其不同的种类和意义。状语从句 分类 说明动作或状态发生、存在的时间。时间状语从句可以由以下连词或词组引导When When“当当当当的时候的时候的时候的时候”uu既可指时间段,也可指时间点既可指时间段,也可指时间点既可指时间段,也可指时间点既可指时间段,也可指时间点uu从句中既可用从句中既可用从句中既可用从句中既可用延续性动词延续性动词延续性动词延续性
3、动词,又可用,又可用,又可用,又可用非延续性非延续性非延续性非延续性动词动词动词动词 uu动作既可和主句的动作动作既可和主句的动作动作既可和主句的动作动作既可和主句的动作同时发生同时发生同时发生同时发生,又可在主句的,又可在主句的,又可在主句的,又可在主句的动作之前动作之前动作之前动作之前或或或或之后之后之后之后发生发生发生发生WhileWhile“在在在在期间期间期间期间”uu只能表示一段时间只能表示一段时间只能表示一段时间只能表示一段时间uu引导的引导的引导的引导的从句从句从句从句只能是只能是只能是只能是延续性动词延续性动词延续性动词延续性动词uu只能与主句中的谓语动词只能与主句中的谓语动
4、词只能与主句中的谓语动词只能与主句中的谓语动词同时同时同时同时发生或存在发生或存在发生或存在发生或存在When&While When&While 巧辨析巧辨析巧辨析巧辨析When A did sth,B was doing sth.When A did sth,B was doing sth.A did sth when/while B was doing sth.A did sth when/while B was doing sth.A was doing sth when/while B was doing sth.A was doing sth when/while B was doi
5、ng sth.eg.1._ Tom was watching TV,his wife was cooking.2._ Mary went into the classroom,Vivi was reading.3.Mary went into the classroom,_Vivi was reading.When&While When&While 巧辨析巧辨析巧辨析巧辨析While/WhenWhenwhile/whensince 巧记巧记巧记巧记“自从自从.时候开始到现在为止时候开始到现在为止”,现在完成时态的标,现在完成时态的标志词之一。志词之一。A has/have done sth s
6、ince B did sth.A has/have done sth since B did sth.A has/have done sth since+A has/have done sth since+过去时间点过去时间点eg.I _(make)many friends since I _ I _(make)many friends since I _(come)here.(come)here.have madecame辨析:辨析:1.until/till引导时间状语从句用于引导时间状语从句用于肯定句肯定句时,时,主句的动主句的动词是延续性动词词是延续性动词,表示动作,表示动作/状态一直持
7、续到状态一直持续到until/till所表示的时间,意为所表示的时间,意为“某动作一直延续到某时间点才某动作一直延续到某时间点才停止停止”。We waited until he came.2.用于用于否定句否定句时即时即not.until.,主句谓语,主句谓语动词是非延动词是非延续性动词,续性动词,意为意为“直到直到.什么时候才什么时候才.”He didnt go to bed till/until his mom returned home.“延肯瞬否延肯瞬否”注意时态问题:1.主过从过 2.主现从不限 3.主将从现 I will call you as soon as Tom gets h
8、ome.1.Its quite common in Britain to say“Thank you”to the drivers _people get off the bus.A.afterB.sinceC.untilD.when2.-How long have you lived here?-I have lived here _I was two years old.A.beforeB.untilC.becauseD.since3.I ll send you an e-mail as soon as I _in Canada.A.arriveB.am arrivingC.arrived
9、D.will arrive4.-What was your brother doing at this time yesterday?-He was reading a magazine_I was writing an e-mail at home.A.beforeB.untilC.whileD.since表示地点、表示地点、方位,方位,这类从句通常由这类从句通常由where,wherever引导,译为引导,译为“哪里哪里哪里就哪里就”或或“的地方的地方”。u Go back where you came from.你从哪儿来的回哪儿去吧!你从哪儿来的回哪儿去吧!u Where there
10、is a will,there is a way.有志者,事竟成。有志者,事竟成。u You can take a walk wherever you like to.你想去哪就去哪散步吧!你想去哪就去哪散步吧!用来说明引起主句这个结果的原因的从句。从属连词用来说明引起主句这个结果的原因的从句。从属连词主要有:主要有:because,since,for,as 等。原因状语从句原因状语从句 考点梳理考点梳理ubecause:回答回答why引导的疑问句,一般位于主句后;引导的疑问句,一般位于主句后;He didnt come to school because he was ill.uas:语气较
11、弱,较口语化,所表示的原因较明显;语气较弱,较口语化,所表示的原因较明显;As it is raining,we shall not go to the zoo.usince:表对方已知的事实,相当于汉语的:表对方已知的事实,相当于汉语的“既然既然”。Since you cant answer the question,Ill ask someone else.ufor:并列并列连词,引导的句子不置于句首,是一种非直连词,引导的句子不置于句首,是一种非直接的、随便附加说明的理由或推断。接的、随便附加说明的理由或推断。The oil must be out,for the light went
12、out.ubecause和和so不能同时用在一个句子里不能同时用在一个句子里ubecause和和because of的区别:的区别:because后面跟后面跟从句从句;because of后面跟后面跟名词、代词、动名词名词、代词、动名词等。等。He is late for school because it rains heavily.He is late for school because of the heavy rain.巧辨析巧辨析1.I was late for class yesterday _ there was something wrong with my bike.A.s
13、inceB.becauseC.thatD.because of2.She found her wallet _ she lost it.A.where B.when C.which D.that3.We must camp _ we can get water.A.whereB.when C.whichD.what4.He didnt go to work _ the heavy rain.A.because B.because ofC.sinceD.so表示条件,常用的连接词表示条件,常用的连接词:if,unless,as long as(只要只要)等等。注意:注意:条件状语从句也像时间状语
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