状语从句简单课件.ppt
第1页,此课件共45页哦What are“Adverbial Clauses”?在主从复合句中修饰主语中的动词在主从复合句中修饰主语中的动词、形容词、副词等的从句叫做形容词、副词等的从句叫做“状语状语从句从句”。分类如下:。分类如下:第2页,此课件共45页哦状语从句状语从句1.时间时间状语从句状语从句2.地点地点状语从句状语从句3.原因原因状语从句状语从句4.条件条件状语从句状语从句5.让步让步状语从句状语从句6.目的目的状语从句状语从句7.结果结果状语从句状语从句8.方式方式状语从句状语从句9.比较比较状语从句状语从句第3页,此课件共45页哦1)常用连词如下:常用连词如下:as,when,while,till/until,not until,before,since,after等。等。1.时间时间状语从句状语从句第4页,此课件共45页哦while,when,as辨析辨析 WhileWhile:引导的时间状语从句引导的时间状语从句只指一段时间只指一段时间,强调,强调某一段时间内,主从句动作某一段时间内,主从句动作同时同时发生。从句动词常发生。从句动词常是是延续性延续性的的 WhenWhen:既可以指既可以指一个时间点一个时间点,也可以是一段时间,也可以是一段时间,可可表示主从句的动作表示主从句的动作同时同时或或先后先后发生。从句动词发生。从句动词可可以是延续性以是延续性的,的,也可以是非延续性也可以是非延续性的。的。AsAs:强调主句从句动作相并发生强调主句从句动作相并发生,译为译为”一边一边一一边边”或或“随着随着”第5页,此课件共45页哦1._he returned,his wife was cooking.2._he was reading,his wife was cooking.3.We talked happily_we walked along.4._ time goes by,its getting colder.WhenWhileasAs第6页,此课件共45页哦当主句是非持续性动词,从句的谓语动词是持续性动词时,when,while,as可互相替换_we were still ,the teacher came in.While/when/Aslaughing第7页,此课件共45页哦 另外另外,when/while还作并列连词还作并列连词,连接并列分句连接并列分句,while表示表示“而而,可是可是”如如:I like reading _my wife enjoys watching TV.when表示表示 突然性突然性“就在这时就在这时”在下列结构中,表在下列结构中,表示某件事正在发生或刚刚发生,另一动作同时发生示某件事正在发生或刚刚发生,另一动作同时发生。1.be about to do when2.be doing when3.be on the point of doingwhen4.had done whenwhile第8页,此课件共45页哦._(我们正要开始就我们正要开始就在这时在这时start)it began to rain.2._mom came in.3.I had just got home _(就开始下雨)就开始下雨)1.We were about to start when我正在玩电脑游戏就在这时妈妈进来了。我正在玩电脑游戏就在这时妈妈进来了。I was playing computer games whenwhen it began to rain第9页,此课件共45页哦ntil既既可可以以用用于于肯肯定定句,句,也也可可以以用用于于否否定定句。句。e.g.I will be here till/until he comes back.I wontknow where he is untilI get a letter from him.until/till 区别第10页,此课件共45页哦“延续的动词(延续的动词(肯定式肯定式)+until”表示表示“直到直到为止为止”1.我一直睡到闹钟响为止我一直睡到闹钟响为止._.“非延续性动词(非延续性动词(否定式否定式)+until”表示表示“直到直到才才”2.直到他完成工作才上床睡直到他完成工作才上床睡_I slept until the clock alarmedHe didnt go to bed until he finished his work.第11页,此课件共45页哦 注意注意:not until 在句首时要倒装在句首时要倒装Not until he saw it himself_(他才相信)(他才相信)did he believe it.第12页,此课件共45页哦before/since 用法用法第13页,此课件共45页哦sawhas been第14页,此课件共45页哦第15页,此课件共45页哦3)as soon as,immediately,directly,instantly 等等副词副词也可引导;表示也可引导;表示“一一就就”。As soon as I reach home,I will tell him the news.I left immediately the clock struck 5第16页,此课件共45页哦第17页,此课件共45页哦1.I was so familiar with him that I recognized his voice _ I picked up the phone.while B.afterC.In case D.the minute2.How long do you think it will take _ our product becomes popular with the consumers?when B.untilC.before D.sinceExercises第18页,此课件共45页哦第19页,此课件共45页哦2.地点地点状语从句状语从句地点状语从句用连接副词地点状语从句用连接副词 where或或wherever(在任何地方在任何地方)引导。引导。e.g.a.Just stay where you are.b.You can sit wherever you like.第20页,此课件共45页哦注意:不要混同于注意:不要混同于where 引导的定语从句引导的定语从句与定语从句的区别:与定语从句的区别:where引导定语从句,从句前引导定语从句,从句前有一个表示地点的名词有一个表示地点的名词Go back where you came from.(_)Go back to the city where you came from.(_)状语从句状语从句定语从句定语从句第21页,此课件共45页哦where I can find it easilywhere your child cant reach itwhere it was第22页,此课件共45页哦3.原因原因状语从句状语从句原因状语从句表示主句中的某一动作或状态原因状语从句表示主句中的某一动作或状态所发生的原因。引导这种从句所发生的原因。引导这种从句 常用的连接词常用的连接词是:是:because,since,as,for,now that 等。等。第23页,此课件共45页哦1)because 语气最强,用来回答语气最强,用来回答why提问,可用在强调提问,可用在强调句型中。句型中。_(是因为他生病)(是因为他生病)he didnt go with us.2)since语气比语气比because弱,表示关系上的自然结果,弱,表示关系上的自然结果,一般译成一般译成“既然,鉴于既然,鉴于”(往往放于主句之前)(往往放于主句之前)_,lets carry out the plan.(既然没人反对(既然没人反对)Since no one is against itIt was because he was ill that第24页,此课件共45页哦3)as语气最弱,只说明一般的因果关系(可放于主句语气最弱,只说明一般的因果关系(可放于主句之前,也可放于主句之后)之前,也可放于主句之后)Wear strong shoes _we shall do a lot of walking today.4)for也可以表示原因,不是说明直接原因,而是对也可以表示原因,不是说明直接原因,而是对某种情况加以推倒,用于表示某种情况加以推倒,用于表示补充说明补充说明理由。理由。He must be ill,_he is absent today.5)now that用来说明一种新情况,然后加以推理,用来说明一种新情况,然后加以推理,now that放于句首时,放于句首时,that可省略。可省略。_everybody is here,lets begin.asforNow(that)第25页,此课件共45页哦4.条件条件状语从句状语从句1)if,unless(=if not),so/as long as(只要只要),in case,on condition that,once(一旦)一旦)2)suppose/supposing/(假设,如果假设,如果),providing/provided/assuming/given/saythat(如果)如果)1.You may use the room _you clean it up afterwards.(只要只要long)2.I will do it _(只要你帮助我(只要你帮助我condition)3.Youll be late again_.(除非你饿除非你饿了了hungry)as long ason condition that you help me.unless you are hungry第26页,此课件共45页哦3)“祈使句祈使句+and/or/or else/otherwise”引导的结果句,祈引导的结果句,祈使句在实际意义上相当于条件状语从句。使句在实际意义上相当于条件状语从句。Use you head,_(那么你就会找到一那么你就会找到一个办法)个办法)Get up now,_(否则你会迟到的)(否则你会迟到的).and you will find a wayor you will be late第27页,此课件共45页哦1.We will be able to get there on time,_ our car doesnt break down on the road.as soon as B.as far asC.as long as D.as well as2.In time of serious accidents,_ we know some basic things about first aid,we can save lives.whether B.untilC.if D.unless第28页,此课件共45页哦5.让步让步状语从句状语从句在复合句中表示让步概念的状语从句被称为让在复合句中表示让步概念的状语从句被称为让步状语从句。通常由下列词语引导:步状语从句。通常由下列词语引导:though,although,even if,even though,while,no matter who/,however,as,whetheror(无论无论还是还是)等。等。第29页,此课件共45页哦第30页,此课件共45页哦No matter wh-与wh_ever 的区别No matter wh_只引导让步状语从句,此时与wh_ever 通用_,he should be invited to the party.Wh-ever又可引导名词性从句,而no matter wh_不能_will be welcome.=_will be welcomeNo matter when/Whenever he comes backWhoever can help usAnyone who can help us第31页,此课件共45页哦whether or 无论无论还是还是 ,it is true.,your idea deserves consideration.Whether you believe it or notWhether right or wrong 第32页,此课件共45页哦 要倒装要倒装,句型为:形容词,句型为:形容词/副词副词/名词(不带冠名词(不带冠词)词)/动词(原形)动词(原形)+主语主语+谓语谓语_he knows a lot(尽管他很年轻young)._(尽管我喜欢它like),I cant afford it._(尽管他是个农民farmer),he is well-educated._,I couldnt lift the stone.(尽管我试了try)Young as he is,Much as I Iike itFarmer as he isTry as I might第33页,此课件共45页哦whwhile(=although),它它引引导导的的让让步步状状语语从从句句只只能能前前置,置,位位于于句句首,首,如:如:nWhileyou may be right,I cant altogether agree.nWhileI admit that the problems are difficult,I dont agree that they cannot be solved第34页,此课件共45页哦第35页,此课件共45页哦第36页,此课件共45页哦第37页,此课件共45页哦6.目的目的状语从句状语从句引导目的状语从句的连词引导目的状语从句的连词:in order that 用于正式文体中,所引从用于正式文体中,所引从句可于主句前或后。句可于主句前或后。so thata.较常用,一般用于主句后较常用,一般用于主句后,有有时可分开,时可分开,so 有时可省有时可省;从句从句中中要有情态动词要有情态动词,否则,否则,就成就成为下一种句型:为下一种句型:b.无无情态动词则引导情态动词则引导结果状语结果状语从句。从句。for fear that;in case;lest(以免以免)等。等。第38页,此课件共45页哦Ill speak slowly (以便)(以便)everybody can understand me.He wrote the name down (唯恐,(唯恐,以免)以免)he would forget.so thatfor fear that(in case)第39页,此课件共45页哦7.结果结果状语从句状语从句结果结果状语从句常位于主句之后,由状语从句常位于主句之后,由so,so that,such that;so that 等引导。等引导。e.g.a.So quickly did he run that I couldnt catch up with him.b.The bus broke down so that we had to walk home.c.He got to the station finally,only to find the train had left.第40页,此课件共45页哦8.方式方式状语从句状语从句描述主句动作进行方式的状语被称为方式状描述主句动作进行方式的状语被称为方式状语。通常用下列词语引导:语。通常用下列词语引导:as,just as,as if,as though,according to 等。等。第41页,此课件共45页哦They are talking as though they were old freinds(好像他好像他们是朋友)们是朋友)He refuses to do as I told him(按照我告诉他的按照我告诉他的)He refuses to do what I told him(我告诉他的我告诉他的)注意:注意:as,like 都表示都表示“像像”,I work as others do.I work like others.as 是连词是连词,后加句子,后加句子 like 是介词,后加名词、代词、名词短语是介词,后加名词、代词、名词短语第42页,此课件共45页哦9.比较比较状语从句状语从句比较状语从句常由下列词语引导:比较状语从句常由下列词语引导:as as,not so/as as,morethan,less than,the more+adj./adv,the more+adj./adv.第43页,此课件共45页哦1.He ran_.(尽可能的远)2._you try,_you will understand.3.Life for women is _(实际两倍艰难difficult)4.A man is twice _as a woman.(可能死于皮肤癌likely)5.The factory produces _last year.(去年的两倍多汽车as)as far as he couldthe betterThe harder twice as difficult as it isas likely to die of skin cancertwice as many cars asit did第44页,此课件共45页哦感谢大家观看感谢大家观看第45页,此课件共45页哦