状语从句简单课件.ppt

1、What are“Adverbial Clauses”?在主从复合句中修饰主语中的在主从复合句中修饰主语中的动词、动词、形容词、副词等的从句叫做形容词、副词等的从句叫做“状语从句状语从句”。分类如下：。分类如下：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1)常用连词如下：常用连词如下：as,when,while,till/until,not until,before,si

2、nce,after等。等。1.时间时间状语从句状语从句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，强调某一段时间内，主从句动作调某一段时间内，主从句动作同时同时发生。从句发生。从句动词常是动词常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，可表示主从句的动作可表示主从句的动作同时同时或或先后先后发生。从句动发生。从句动词词可以是延续性可以是延续性的，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

3、,译为译为”一一边边一边一边”或或“随着随着”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 另外另外,when/while

4、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，在下列结构中，表示某件事正在发生或刚刚发生，另一动作同时表示某件事正在发生或刚刚发生，另一动作同时发生。发生。1.be about to do when2.be doing when3.be on the point of doingwhen4.had done whenwhile._(我们正要开我们正要开始就在这时始就在这时start)it began

5、 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 rainuntil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

6、letter from him.until/till 区别“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我一直睡到闹钟响为止止._.“非延续性动词（非延续性动词（否定式否定式）+until”表表示示“直到直到才才”2.直到他完成工作才上直到他完成工作才上床睡床睡_I slept until the clock alarmedHe didnt go to bed until he finished his work.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

7、）（他才相信）did he believe it.before/since 用法用法sawhas been3)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 51.I was so familiar with him that I recognized his voice _ I picked up the phone.while B.a

8、fterC.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.sinceExercises2.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.注意：不要混同于注意：不要混同于whe

9、re 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，从引导定语从句，从句前有一个表示地点的名词句前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where I can find it easilywhere your child cant reach itwhere it was3.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

10、从句态所发生的原因。引导这种从句 常用的常用的连接词是：连接词是：because,since,as,for,now that 等。等。1)because 语气最强，用来回答语气最强，用来回答why提问，可用在提问，可用在强调句型中。强调句型中。_（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 i

11、s against itIt was because he was ill that3)as语气最弱，只说明一般的因果关系（可放语气最弱，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）于主句之前，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，用于表示是对某种情况加以推倒，用于表示补充说明补充说明理理由。由。He must be ill,_he is absent today.5)now that用来说明

12、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)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 roo

13、m _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_.(除非除非你饿了你饿了hungry)as long ason condition that you help me.unless you are hungry3)“祈使句祈使句+and/or/or else/otherwise”引导的结引导的结果句，祈使句在实际意义上相当于条件状语从句。果句，祈使句在实际意义上相当于条件状语从句。Use you head,_(那么你就会那么你就会找到一个办法

14、）找到一个办法）Get up now,_（否则你会迟到（否则你会迟到的）的）.and you will find a wayor you will be late1.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.

15、whether B.untilC.if D.unless5.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：为让步状语从句。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。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 part

16、y.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 uswhether 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 要倒装要倒装，句型为：形容词，句型为：形容词/副词副词/名词（不名词（

17、不带冠词）带冠词）/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 mightwhnwhile(=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

18、 may be right,I cant altogether agree.nWhileI admit that the problems are difficult,I dont agree that they cannot be solved6.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，所引用于正式文体中，所引从句可于主句前或后。从句可于主句前或后。so thata.较常用，一般用于主句后较常用，一般用于主句后,有时可分开，有时可分开，so 有时可省有时可省;从句中从句中要有情态动词要有情态动词，否则，否则,就成为下一

19、种句型：就成为下一种句型：b.无无情态动词则引导情态动词则引导结果状结果状语语从句。从句。for fear that;in case;lest(以免以免)等。等。Ill speak slowly （以便）（以便）everybody can understand me.He wrote the name down （唯（唯恐，以免）恐，以免）he would forget.so thatfor fear that(in case)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 等引等引导。导。e.g

20、.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.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：式状语。通常用下列词语引导：as,just as,as if,as though,according to 等。等。They are

21、talking as though they were old freinds(好好像他们是朋友）像他们是朋友）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

22、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.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