高考英语二轮复习专项语法ppt课件：名词性从句

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,二轮复习,名词性从句,二轮复习名词性从句,在英语的句子结构中,，,如果本该由名词充当的主语、宾语、表语和同位语，,由一个句子来充当,，那么这个句子就叫,_,。,主语从句,宾语从句,表语从句,同位语从句,名词性从句,名词性从句,在英语的句子结构中，如果本该由名词充当的主语、宾语、表语和同,引导词,连接词:that,whether,if,because,as if,as though,连接代词:who,whom,what,which,whose,whatever,连接副词:when,where,why,how,however,wherever,名词性从句的引导词,引导词连接词:that,whether,if,bec,What I want to do is to go shopping.,2.She had a feeling that she was being watched.,3.I dont think that he is an honest boy.,4.Who will go with you is decided by yourself.,(,主语从句,),(,同位语从句,),(,宾语从句,),(,主语从句,),判断从句的方法：,一 找谓语动词,二 找引导词划从句,三 看从句在主句的位置,请判断出下列的句子属于哪种从句：,What I want to do is to go sho,在名词性从句中一律用陈述句的语序，即使从句表达的是疑问含义。,The problem is,what he has done to the little boy,.,问题是他对那个小男孩做了些什么。,在名词性从句中一律用陈述句的语序，即使从句表达的是疑问含义。,1.,主语从句,主语从句通常由从属连词,that,，,whether,和连接代词,what,who,which,whatever,whoever,以及连接副词,how,when,where,why,等,词引导。,that,在从句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当成分。,1.主语从句主语从句通常由从属连词that，whether,Who will win the match,is still unknown.,Where the English evening will be held,has not yet been announced.,That he stole a bike,was true.,What he wants to tell us,is not clear.,Who will win the match is stil,单个的主语从句作主语时，谓语动词用单数形式。如果是两个或两个以上的主语从句作主语，谓语动词则用复数形式。,Where and when he was born,has not been found.,When the person was murdered,and,why he was murdered,are still unknown.,单个的主语从句作主语时，谓语动词用单数形式。如果是两个或两个,有时为避免句子头重脚轻，常用,it,代替主语从句作形式主语放于句首，而把主语从句置于句末。主句的谓语动词一般用单数形式。常用句型如下：,1,）,It,+,be,+,名词,+,that,从句,2,）,It,+,be,+,形容词,+,that,从句,3,）,It,+,be,+,动词的过去分词,+,that,从句,4,）,It,+,不及物动词,+,that,从句,It is known to us,how he became a writer,.,有时为避免句子头重脚轻，常用it 代替主语从句作形式主语放于,注意,:,在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“,(should)+do”,，常用的句型有：,It is necessary/important/natural/strange,etc.),that,注意:在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气,2.,宾语从句,名词句用作宾语的从句叫宾语从句。,引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作及物动词或介词及某些形容词的宾语。,2.宾语从句名词句用作宾语的从句叫宾语从句。引导宾语从句,连接词,that,引导宾语从句时，句中不担任任何成分，在口语或非正式的文体中常被省去。,但下面情况中不能省略。,（,1,）,that,一般不能充当介词宾语,但except,in的宾语。如:,He is a good student except that he is a little bit careless.,他是个好学生,就是有点粗心。,其他介词后面需要用that从句作宾语时,必须用it作形式宾语。如:,You may depend on it that I shall always help you.,你要相信我会一直帮助你的。,1.,由连接词,that,引导的宾语从句,连接词that引导宾语从句时，句中不担任任何成分，在口语或非,高考英语二轮复习专项语法ppt课件：名词性从句,(4)it,作形式宾语的宾语从句。,一些动词后的宾语从句有宾语补足语时，则需要用,it,作形式宾语，而将,that,引导的宾语从句后置。常见的这类动词有,find,think,consider,believe,guess,suppose,make,等。,He has,made it clear that,the meeting will not be postponed.,他清楚地表明会议不会被推迟。,hate,like,dislike,appreciate,enjoy,等表示,“,喜欢,”,、,“,厌恶,”,的动词以及一些动词短语,see to,depend on,rely on,等常用,it,作形式宾语，而将宾语从句后置。,I shall,see to it that,he is taken good care of when you are absent.,你不在的时候，我负责把他照顾好。,(4)it作形式宾语的宾语从句。,注意,:,在,demand,order,suggest,advise,decide,insist,desire,request,command,等表示要求、命令、建议、决定等意义的动词后，宾语从句常用,“,should+,动词原形”。,should,可省略,I insist that,she,(should),do her work alone,.,The commander ordered that,troops,(should),set off at once.,但是,如果,suggest,作“表明、暗示”讲,insist,作“坚持说、坚持认为”讲，则其后的宾语从句中应该用陈述语气。,The smile on his face suggested,that he had passed the examination,.,注意:在demand,order,suggest,ad,连接词 whether 和if表“是否”,引导名词性从句时在从句中不担当句子成分,但有自己的意义。,在下列情况下只能用whether而不用if:,(1)在主语从句、表语从句和同位语从句中;,(2)在介词后的宾语从句中;,(3)与or not连在一起使用时。,(4)discuss后必须用whether引导宾语从句。,(5)跟不定式连在一起使用时,It remains to be seen,the newly formed committees policy can be put into practice.,答案,:,whether,2.whether/if的用法,连接词 whether 和if表“是否”,引导名词性从句时在,4),宾语从句中的时态呼应,宾语从句的谓语动词时态受主句谓语动词的影响，如果主句的谓语动词是一般现在时从句中的谓语动词可以用各种时态；,I know that,he studies English every day,.,I know,(that)he will study English next year.,We all know,that he has studied English since 1998,.,I know,that he studied English last term,.,The teacher told us,that Tom had left us for America,4)宾语从句中的时态呼应 宾语从句的谓语动词时态受主句谓语动,如果主句中的谓语动词用了一般过去时，则从句中的语动只能用过去时的某种形式，如一般过去时，过去进行时，过去将来时等；,We believed,that he had earned enough money to build a house,.,The teacher told us,that Tom had left us for America,当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。,The teacher told us,that the sun rises in the east,.,课件,PPT,部编版课件统编版部编版,2020,届高考英语二轮复习专项语法课件：名词性从句课件优质课课件免费课件,PPT,课件,PPT,部编版课件统编版部编版,2020,届高考英语二轮复习专项语法课件：名词性从句课件优质课课件免费课件,PPT,如果主句中的谓语动词用了一般过去时，则从句中的语动只能用过去,5),当主句是,I/We think(suppose,expect,believe,guess,imagine),时，其后的宾语从句如果是否定形式，常把否定词,not,从从句中转移到主句中成为否定的转移。,We dont believe,that he will win the game,.,I dont think,he will do so,.,课件,PPT,部编版课件统编版部编版,2020,届高考英语二轮复习专项语法课件：名词性从句课件优质课课件免费课件,PPT,课件,PPT,部编版课件统编版部编版,2020,届高考英语二轮复习专项语法课件：名词性从句课件优质课课件免费课件,PPT,5)当主句是I/We think(suppose,ex,doubt,用于肯定结构时，后面用,whether/if,引导名词性从句；用于否定结构或疑问结构时，后面用,that,引导名词性从句。,be sure,用于肯定句或疑问句时，后接,that,引导的名词性从句；用于否定句时，后接,whether/if,引导的名词性从句。,连接代词,whoever,，,whatever,，,whichever,可引导名词性从句，相当于,anyone who,anything that,等。它们也可以引导让步状语从句，相当于,no matter who/what/which,。,Whoever breaks the law,should be punished.,课件,PPT,部编版课件统编版部编版,2020,届高考英语二轮复习专项语法课件：名词性从句课件优质课课件免费课件,PPT,课件,PPT,部编版课件统编版部编版,2020,届高考英语二轮复习专项语法课件：名词性从句课件优质课课件免费课件,PPT,doubt用于肯定结构时，后面用whether/if 引导,3.,表语从句,在句中作表语的句子叫表语从句。,引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用,as if,because,引导。其基本结构为：