高考重难点名词性从句精讲
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高考英语一轮复习语法点专题讲解名词性从句名词性从句名词性从句包括主语从句、表语从句、宾语从句、同位语从句。
其关联词有连接词that,if,whether;疑问代词who,what,which和疑问副词when,where,how,why等。
1.主语从句主语从句在句中做主语。
它可以放在主句谓语动词之前,但多数情况由it作形式主语,而把主语从句放在主句之后。
例如:Who did that is known to all.It is interesting that you should like him.2.表语从句表语从句在句中作表语,位于主句中的系动词之后。
如:The question is who can complete the difficult task.表语从句不能用if引导,但可用as if引导。
例如:He looked as if he was going to cry.3.同位语从句同位语从句跟在名词后面,进一步说明该名词的具体内容。
引导同位语从句的名词主要有fact,news,promise,idea,truth等。
连接词用that(不用which),及连接副词how,when,where,why等。
例如:His delay is due to the fact that the car went wrong halfway.The news that our team has won the match is true.She asked the reason why there was a delay.4.宾语从句1.宾语从句在句中作及物动词或介词的宾语。
例如:We can learn what we did not know.He will talk to us about what he saw in the U.S.如果主句的谓语动词是及物动词make,find,see,hear等,则把宾语从句置于宾语补足语之后,用it作为形式宾语。
名词性从句复习注意:1.在名词性从句中,连接词的选择要根据从句的句意和上下文来确定。
2.当从句是陈述句时,通常使用连接词that(可省略,但在正式文体中建议保留);当从句是疑问句时,通常使用whether/if(表示选择或疑问)或连接代词/副词(表示具体的疑问内容)。
3.在宾语从句中,当从句是特殊疑问句时,其语序要调整为陈述句语序。
4.同位语从句与定语从句的区别在于:同位语从句是对前面名词或代词的具体内容的阐述或解释,而定语从句则是对前面名词或代词的修饰和限定。
一、主语从句定义:在句子中充当主语成分的从句。
引导词:that, whether, if, who, whom, which, what, whose, how, when, where等。
使用原则:主语从句通常位于句首,用于描述句子的主要动作或状态的执行者或承受者。
它可以是陈述句、疑问句或祈使句(但祈使句作为主语从句的情况较少见)。
构成:主语从句通常由连接词that(可省略,但当从句中有疑问词或表示否定、强调等意义的词时,通常不省略)或whether/if(表示选择或疑问)引导,后面跟完整的句子结构。
例句:1.What he said made me think deeply.2.Whether he will come or not is still a mystery.3.How we can solve the problem is our main concern.4.That the earth moves around the sun is a well-known fact.5.Whoever breaks the law should be punished.练习题1._____ he said at the meeting surprised us all.A. WhatB. ThatC. HowD. Why2._____ you do, do it with all your heart.A. WhateverB. WheneverC. WhereverD. However3.It is _____ he often fails in exams that makes his parents worried.A. whatB. becauseC. thatD. why4._____ is known to all, the moon travels around the earth.A. AsB. WhichC. ThatD. What5._____ we should do next is still under discussion.A. WhatB. HowC. WhetherD. When答案:AAC(强调句结构)AA二、宾语从句定义:在句子中充当宾语成分的从句。
高考英语语法知识点:名词性从句1500字名词性从句是指在句子中充当名词的成分的从句。
名词性从句分为主语从句、宾语从句、表语从句和同位语从句。
在高考英语中,名词性从句是考查的重点之一,我们需要对名词性从句的结构和用法有透彻的理解。
下面是关于名词性从句的一些重要知识点:1.主语从句主语从句在句中充当主语的作用。
主语从句通常以that引导,也可以用whether或if 引导。
例如:- That he is guilty is certain.- Whether we will win the game is yet to be seen.- If it will rain tomorrow is still uncertain.2.宾语从句宾语从句在句中充当宾语的作用。
宾语从句通常以that引导,也可以用whether或if 引导。
需要注意的是,当主句的动词是说、tell、ask、think、believe、know等表示说话、思考、感觉的动词时,常用连词that引导宾语从句,但如果宾语从句的主语与主句的主语相同,可以省略连词that。
例如:- I know that he is a good student.- She asked me if/whether I had finished my homework.- He told her (that) he loved her.3.表语从句表语从句在句中充当表语的作用。
表语从句通常以that引导,也可以用whether或if 引导。
例如:- The fact that he didn't come is disappointing.- The question is whether we should proceed with the plan.- My concern is if/whether we have enough time.4.同位语从句同位语从句用来解释或说明前面名词的具体内容或意义。
高考英语名词性从句语法知识点讲解高考英语名词性从句语法学问点讲解名词性从句指充当名词成分的从句,下分许多类型,是英语学习的重点,详细都有哪些学问点呢?我整理了相关资料,盼望能关心到您。
主语从句宾语从句表语从句同位语从句作及物动词宾语作介词宾语that一般不省略可以省略一般不省略一般不省略一般不省略Whether/if(是否)放于句首时只用whether用whether/if均可,但有区分只用whether只用whether只用whether特别疑问词留意语序要用陈述语序名词性关系从句留意语序要用陈述语序一、that 从句1、主语从句(1)that从句作主语时,常用it作形式主语,常见的句型有:It+be+形容词(obvious, true, natural,surprising,good,wonderful,funny,possible,likely,certain,pro bable,etc.)+that从句It+be+名词词组(no wonder, an honor, a good thing, a pity, no surprise, etc.)+that从句It+be+过去分词(said, reported, thought, expected, decided, announced, arranged, etc.)+that从句(2)that可以省略,但that从句位于句首时,that不能省略。
2、宾语从句(1)常见的可以接that从句作宾语的动词有see, say, know, imagine, discover, believe, tell, show, think, consider, be sure, be afraid等。
在可以接复合宾语的动词之后,如think, make, consider等,可以用it作形式宾语。
(2)That从句一般不能充当介词宾语,间或可作except, in 的宾语。
名词性从句一、名词性从句与简单句的区别在英文中,名词或名词短语主要充当四种句子成分:主语、宾语、表语和同位语。
如果把句子当作名词来用,分别充当另一句话的主语、宾语、表语或同位语,于是便构成了四种从句:主语从句、宾语从句、表语从句和同位语从句。
因为这四种从句在本质上相当于名词的作用,所以将其统称为名词性从句。
请看下表:在英语中,相当于名词作用的句子有三类,陈述句、一般疑问句以及特殊疑问句。
因此,名词从句就是用三种句子来分别充当另外一个句子的四种句子成分,者就构成了名词从句的本质特征。
但是,这三种句子不是直接放在另一个句子中作成分,而是要作各种变化调整。
接下来将具体讨论。
二、陈述句作句子成分1. 要在陈述句句首加上t hat用”that+陈述句”这一结构分别充当另一个句子的四种成分。
2.为什么要加that?对于陈述句,为什么要在其句首加that 后才能用它作成分呢?而为什么在宾语从句中that 又可以省去呢?因为在英文中,句子的核心意思主要是靠谓语部分来表达,一个句子只表达一个核心意思,也就是只能有一个谓语部分。
而添加that,相当于一个“指路牌”,能够帮助我们指明段句的方向,而不至于造成歧义。
而对于宾语从句,主句的谓语已经出现,后面所接的成分自然是谓语,所以在不会影响句子的意思下,是可以把that 省去的。
三、一般疑问句作句子成分1.用w hether 或if 引导先将疑问句的倒装语序变成陈述句语序(即主语放在谓语的前面),并在句首加上whether 或if(if 只用在宾语从句中)来引导,以保留原句的疑问意义。
即“whether+陈述句”2. if 还是 whether?1)if 一般只用于引导宾语从句,而 whether 可引导宾语从句在 内的其他名词从句。
IF he comes or not makes no difference. 成 Whether he comes or not makes no difference.2)if 不和 or not 直接连用,即一般不说 if or not, 但可以说 if...or not 。
名词性从句一、名词性从句的引导词有:连接词:that、if、whether连接代词:who/ whom/whose/what/which/wh_ever连接副词:when/where/why/how/二、各种连接词的用法:1.连接词that、whether、if 不在它们引导的主语从句中充当句子成分。
2. 连接代词who、whose、what、which等都在句子中担当一个句子成分。
比如:主语、宾语、表语、定语等等。
3. 关系副词when、where、how、why等分别在句子中作时间状语、地点状语、方式状语等等。
➢主语从句(The Subject Clause)作句子主语的从句叫主语从句。
主语从句通常由从属连词that,whether,if 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在句中无词义,只起连接作用;连接代词在从句中起名词的作用,在句中既保留自己的疑问含义、又起连接作用,作主语、宾语、表语、定语等;连接副词在从句中起副词的作用,作状语。
例如:1.从属连词that 引导的主语从句That light travels in straight line is known to all. 众所周知,光是以直线传播的。
It so happens that I know the man. 碰巧我认识那个。
Is it certain that they will win 他们一定会赢吗常以it作形式主语的句型有:A. It+be+形容词(obvious, true, natural, surprising, good, wonderful, funny,possible, likely, certain, probable, etc.)+that从句。
如:It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。
高考英语名词性从句知识讲解名词性从句是指在复合句中起名词作用的句子,功能相当于名词词组。
名词性从句在复合句中能作主语、宾语、表语、同位语等,根据在句中的语法功能可分为主语从句、宾语从句、表语从句和同位语从句。
一、主语从句【定义】在复合句中,作主语的句子称为主语从句。
常见的连接词:(连接词在句中不能省略)that, whether, who, what, whatever, whoever, where, when, why, how等。
【用法】1.连接词 that 引导That we should learn English well is very important.主语从句中 we should learn English well句子完整,不缺成分,用that引导,that 不能省连接词whether,if 引导whether 引导的主语从句可放句首,也可放句中,表“是否”if 引导的主语从句只能引导动词后的宾语Whether I will go or not depend on the weather.It remains to be seen whether / if they can finish the task in time.2.连接代词what, who, which, whose, whatever, whichever,whoever等引导What matters most is your attitude.3.连接副词when,where,why,how等引导How he made it is still unknown.4.it作形式主语为了避免句子头重脚轻,通常把形式主语it放在句首,真正的主语放在句子后面。
常见句型:(1) It is + n.+ that + 句子It is +(a pity / a shame / a fact …)+ that ...(2) It is + adj.+ that + 句子It is +(true / clear / important …)+ that ...(3) It is + 过去分词 + that + 句子It is+ said / announced / expected / believed / hoped… + that ...(4) It seems /appears / happens / turned out that + 句子(5) It hit sb./occurred to sb.that + 句子二、宾语从句【定义】在复合句中,作宾语的句子称为宾语从句。
高考英语语法复习名词性从句知识讲解一、与定语从句区别它们的性质不同,一个是名词,而另一个是形容词性。
名词性从句是独立的,而定语从句必须要依附先行词(相当于寄身虫)。
有时名词性从句可以转换成定语从句(必须加先行词)。
比如:What he said = The things that he said二、构成构成一个名词性从句就像是对一个陈述句进行特殊疑问句的提问,只不过不颠倒语序,如:He said something.What he said (名词性从句)What did he say? (特殊疑问句)三、分类(一)根据从句在句中不同的语法功能,名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句四种。
(二)根据引导名词性从句的连接词可分为三类:1.连接词: that, whether, if (不充当从句的任何成分)2.连接代词:who, what, which, whose, whoever, whichever, whomever, whatever3.连接副词:where, when, why, how (how much, how long…), wherever, whenever, however1.主语从句【例句】1.That prices will go up is certain.= It is certain that prices will go up.2.How you travel means the difference between success and failure.3.Whether we go by train or by boat makes no difference.4.Who will write the poem has not been decided yet.5.What surprised us is that he lost in the game.6.What he left us was a large sum of money.7.When he will be back depends on the weather.8.Where we live doesn’t matter.9.How the pyramids were built was still a mystery.10.Watever he did is right.11.Whoever comes will be welcome.12.Whichever you want is yours.【注意点】That引导的主语从句中,that不能省略。