What_和that在名词性从句中的用法区别
名词性从句中常用连接词的区别
名词性从句中常用连接词的区别作者：陈焕锁来源：《新高考·高一英语》2012年第03期名词性从句的功能相当于名词词组。
在句中作主语、宾语、表语和同位语。
因此，主语从句、宾语从句、表语从句和同位语从句通称为名词性从句。
名词性从句的连接词通常分为三类：第一类连接词在名词性从句中，不充当任何成分，只起连接作用。
这类连接词有：that, if, whether, as if, as though等。
例如：When a pencil is partly in a glass of water, it looks as if it were broken. 当铅笔一部分放进水里时，看起来好像断了似的。
第二类连接词在名词性从句中，作主语、宾语、表语、宾语补足语、定语。
这类连接词有：what, whatever, who, whoever, whom, whomever, which, whichever, whose等。
这类连接词称之为连接代词。
例如：Here are the chairs. Tell me which are worth buying. 就是这些椅子。
告诉我买哪几把好。
第三类连接词在名词性从句中，作状语。
这类连接词有：when, whenever, where, wherever, how, however, why等。
这类连接词称之为连接副词。
例如：The students asked the teacher when the examination was going to be held. 学生们问老师什么时候举行考试。
【名词性从句中常用连接词的区别】一、 what与that 的区别1. what引导名词性从句时，在从句中通常作主语或宾语，有时作表语或宾语补足语。
表示“……的东西、……的事情、……的话、……的时间、……的地方、……的人、所谓的……、……样子等”。
而that引导名词性从句时，在从句中不充当任何成分，也没有任何含义，只起连接作用。
名词性从句知识点
复合句中具有名词性质并且可以做主语、表语、同位语或宾语的从句叫名词性从句。
因此，我们把主语从句、表语从句、同位语从句和宾语从句这四种从句统称为名词性从句。
高考热点1）怎样判断名词性从句的类别；2）连词that 和what的用法与选择3）if 与whether的区别4）同位语从句与定语从句的区别5）名词性从句必须采用的陈述语序6）it 可充当形式主语和形式宾语7）疑问词+-ever的连词和不加-ever的连词在语义上的用法和差别核心解读一1、在名词性从句中，从句都用陈述语序。
2、引导名词性从句的词叫引导词。
引导词可以分为以下几类：1）从属连词that（用于表示肯定的含义）, whether, if (表示疑问)，这三个词只起连接作用，不充当从句中的任何成分，除宾语从句外（that可省）,这些词均不可省略。
2）连接代词有who, whom, whose, what, which, whoever, whatever, whichever等。
这些词在从句中既起连接作用，又充当从句中的成分，如主语、宾语、表语、补语，且不可省略。
3）连接副词有when, where, why, how, wherever, however等。
它们既起连词作用，本身又做从句中的状语。
3、名词性从句中的时态一致问题1）在宾语从句中，当主句是一般现在时、将来时或现在完成时，起从句的谓语根据需要用适当的时态。
当主句是一般过去时，从句用过去的某个时态，但若宾语从句表示客观真理，格言，谚语等，从句的时态仍用一般现在时。
Have you told him that when we are to leave?Teacher told us that China lies in the west of Japan.Although she was listening, she didn’t hear what he was saying because t here was so much noise.2）在主语从句、表语从句或同位语从句中，应注意主语从句中的谓语动词的时态一致性及动作发生的先后关系。
名词性从句中that和what的用法
名词性从句中that和what的用法作者：晏飞来源：《求学·新高考版》2021年第07期在高考英语中，名词性从句中that和what的用法是学生容易混淆的一个问题。
高考英语语法填空题中，连接词的用法是必考的内容，其中连接词that和what的辨析是高考命题人喜欢利用的考点。
理解这个语法点，能够让小知识发挥大作用，使学生在高考英语备考中事半功倍。
如何才能理解that和what的用法？观察下面这几个句子，让我们从中归纳出一个普遍的规律。
1.What he wants is a book. 我想要的是一本书。
2.That he wants to go there is obvious. 很明显他想去那里。
3.The result is that we won the game.结果是我们赢得了比赛。
4.This is what we want to know.這就是我们想知道的内容。
5.Is what he told us true？他告诉我们的是真的吗？6.We should pay attention to what the teacher is saying.我们应该关注老师正在讲解的内容。
7.I have no doubt that he will come. 我不怀疑他回来。
8.I have no idea what he did that afternoon.我不知道他下午做了什么事。
9.We live in what is called China.我们住在一个被称为中国的地方。
10.What you see is what you get.你所看到的就是你所得到的。
分析以上十个句子，我们不难发现一个规律：从句中缺少句子成分用what，从句中句子结构完整用that。
That只是起到单纯的连接主句和从句的作用，然而what除了连接主句和从句外，还在从句中充当句子成分。
一些英语基础知识薄弱的同学看到这里可能仍然是一头雾水。
what和that的用法区别
the＋名词＋that”或者all that, 即好像是既包括了先行词也包含了
关系代词，因此，有学者称之为关系代词型what。如：
seemed to be a long time, he came up again.
1 _T_h_a_t_ she lacks experience is obvious. 2 The police learned _t_h_a_t _ he wasn’t there at that time. 3 He realized _th_a_t__ she too was tired. 4 My idea is _t_h_a_t you shouldn’t have left the country. 5 Bob has the mistaken idea _th_a_t_tomorrow is a holiday. 6 It was quite plain _t_h_a_t_ he didn’t want to come. 7 It is natural _t_h_a_t_ they should have different views.
that—从属连词
主语从句 宾语从句
引导_名_词__性_从__句___， 表语从句
_不_充__当__句子成分， 同位语从句
_没_有____字面意义。
引导宾语从句的 that可以省略
1 _W__h_a_the had hoped at last came true. 2 China is no longer _w_h_a_t_ it used to be. 3 I’m sorry for _w_h_a_t_ I said. 4 That’s _w_h_a_t_ I want to know. 5 It was _w_h_a_t_ he meant rather than w__h_a_t he said. 6 There’s something in _w_h_a_t_ he says. 7 200 years ago, they came to _w__h_a_t we call “America” now.
语法中的名词性从句的引导词和用法
语法中的名词性从句的引导词和用法在语法中，名词性从句是一个用作名词的句子。
它可以在句子中充当主语、宾语、表语或补语。
名词性从句的引导词起着连接名词性从句和主句的作用。
下面将介绍常见的名词性从句引导词及其用法。
一、引导名词性从句的关系词1.thatthat可以引导名词性从句作为主语、宾语、表语或补语。
例如：- 主语：That he is innocent is beyond doubt.（他是无辜的是毫无疑问的。
）- 宾语：I heard that he is innocent.（我听说他是无辜的。
）- 表语：The fact is that he is innocent.（事实就是他是无辜的。
）- 补语：My belief is that he is innocent.（我相信他是无辜的。
）2.whether/ifwhether和if在引导名词性从句时可以用作连接词，用法相同。
它们常引导一个引导词从句，用来表示“是否”，常用于宾语从句或主语从句的引导词。
例如：- 宾语：I don't know whether/if he will come.（我不知道他是否会来。
）- 主语：Whether/If it will rain tomorrow is uncertain.（明天是否会下雨还不确定。
）3.whowho可引导主语从句、宾语从句或表语从句。
它用来指代人。
例如：- 主语：Who will win the game is still unknown.（谁将获胜还不知道。
）- 宾语：I don't know who he is.（我不知道他是谁。
）- 表语：The winner depends on who plays better.（胜利者取决于谁打得更好。
）4.whatwhat可以引导主语从句、宾语从句或表语从句。
它用来指代事物或事实。
例如：- 主语：What she said surprised me.（她说的话让我感到惊讶。
英语语法：四组名词性从句引导词用法区别
【导语】欢迎阅读为⼤家精⼼整理的英语语法：四组名词性从句引导词⽤法区别！欢迎阅读学习！更多相关讯息请关注！ 四组名词性从句引导词⽤法区别 1. what 与that的⽤法区别 两者均可引导主语、表语、宾语从句，区别是what可在从句中⽤作主语、宾语或表语，意为“什么”或“所…的”，⽽that仅起连接作⽤，本⾝没有实际意义，在从句中也不充当任何句⼦成分(引导宾语从句时通常可以省略)： He doesn’t know what she likes. 他不知道她喜欢什么。
What you say is quite right. 你所说的相当正确。
I believe (that) he will come to see us. 我相信他会来看我们的。
It’s a pity (that) he didn’t finish college. 真遗憾他⼤学没毕业。
另外，that 可引导同位语从句，但 what 通常不⽤于引导同位语从句： I had no idea that you were here. 我不知道你在这⼉。
2. whether与 if的⽤法区别 两者的⽤法异同注意以下⼏点： (1) 两者均可引导宾语从句，表⽰“是否”，常可互换： He asked if [whether] we wanted a drink. 他问我们是否想喝⼀杯。
He didn’t tell me if [whether] he would come. 他没有告诉我他是否会来。
【注】若是引导条件状语从句，则只能⽤ if(意为“如果”)。
(2) 当引导⼀个否定的宾语从句时，通常⽤ if ⽽不⽤ whether： I don’t care if it doesn’t rain. 我不在乎天是否下⾬。
【注】在个别词语(如 wonder, not sure 等)后的从句否定式有时也可⽤ whether 引导： I wonder if [whether] he isn’t mistaken. 我想知道他是否错了。
复合句式重难点-what和that的用法区别
复合句式重难点-what和that的用法区别许多同学在学习复合句和特殊句式时，都会为“that”和“what”的选择而头疼，感觉这两个连接性词语辨别起来“有点乱”。
你也不妨先做一做下面几个题，看看你能否把他们分清：1.A modern city has been set up in ____ was a wasteland ten years ago.A. whatB. whichC. thatD. where2.Because of my poor memory, all ____ you told me has been forgotten.A. thatB. whichC. whatD. as3.With his work completed, the businessman stepped back to his seat, feeling pleased ____ he was a man of action.A. whichB. thatC. whatD. whether4.It is what you do rather than what you say _______ matters.A. thatB. whatC. whichD. this5.His plan was such a good one _________ we all agreed to accept it.A. soB. andC. thatD. as上面5个题中的前四个题，在选项中都同时出现了what和that，如何选择呢？第1题为答案A。
考查名词从句连接代词what的运用。
“十年前是一片荒地的地方建起了一座现代化的城市”。
作介词in的宾语不能用that，因为名词从句中that 不做任何成分；连接代词what引导一个宾语从句，“是一个什么样的地方”；第2题为答案A。
考查定词从句关系代词that的运用，“因为记忆不好，你告诉我的，我都给忘了”。
从句中that和what的用法
that与what从句用法that 与what从句就是中学课本的一项重要语法内容,也就是学生易出错的地方。
现将其用法归纳如下:一、引导主语从句that与what都可引导主语从句,that在从句中不作句子成分,但不能省略。
what 在从句中可作主语、宾语、表语等,不能省略。
如:What he said at the meeting was very important.她在会上所说的非常重要。
(what在主语从句中作宾语)What surprised us is that he did it alone.使我们吃惊的就是她一个人做了那项工作。
(what在主语从句中作主语)That he did it alone surprised us.她独自完成了那项工作使我们感到吃惊。
(that用来引导主语从句,在句中不作成分)二、引导宾语从句that与what都可引导宾语从句,that在从句中不作句子成分, 一般情况下可以省略但当有两个以上的宾语从句时,只能省掉第一个that。
what 在从句中可作主语、宾语、表语等,不能省略。
如:They stopped to see what was happening.她们停下来瞧发生了什么事情。
(what在宾语从句中作主语)The teacher got angry because of what the boy had done.那个男孩子做的事情让老师很生气。
(what在宾语从句中作宾语)All the people believed that it was right to rescue the temple.所有的人都认为拯救古庙就是正确的。
(that在宾语从句中不作句子成分且可省略)We must believe that each one of us is able to do something well and that when we discover what this something is we must work hard at it until we succeed.我们必须相信,我们每一个人都能把某件事情办好;而且,当我们发现这事情就是什么的时候,我们就必须努力干下去,直到成功为止。
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What 和that 在名词性从句中的用法区别What 和that 都可以引导名词性从句。
一．在引导名词性从句时，从属连词that一般要注意三个不（three nos）：1．不省略（no ellipsis）当从属连词that引导主语从句、表语从句和同位语从句时，that不省略。
Eg. 1) That he was able to come made us happy.(That 引导主语从句不可省略)2)The truth is that I didn’t go there. (that引导表语从句不可省略)3)The news that our team has won is true. (that引导同位语从句不可省略)但在非正式文体中that 引导宾语从句时可以省略，除下列两种情况外：that在宾语从句中不能省略的情况.(1). 在主+谓+it(形式宾语)+宾补+that，从句(真正宾语) 的句型中不省略.Eg: 4) He made it quite clear that he preferred to study English.（that不可以省略）他很明确地说他宁愿学习英语。
(2). 由连词and连接的两个由that引导的宾语从句中, 则第二个宾语从句前的that不省略。
Eg: 5) He told me (that) he would come and that he would come on time.（第一个That可以省略，但第二个that不可以省略。
)他告诉我他将来而且他将准时来。
2．不作成分（no component）that 在名词性从句中不作任何句子成分。
Eg. 6)Sydney kept his promise that he would always do anything he could for Lucie to make sure of her happiness.（that在句中引导同位语从句，但在句中不作任何成分）7))That you don’t like him is none of my business. (that在句中引导主语从句，但在句中不作任何成分，也不省略）3．没词义（no meaning）that 在名词性从句中没有汉语意思。
Eg. 8)That she is a rich woman is known to us. (that在句中引导主语从句，但在句中没有汉语意义) 她是一个很有钱的女子，这一点我们都知道。
9）The thought that he might fail in the exam worried him. (that在句中引导同位语从句，但在句中没有汉语意义）他也许会考试失败，这一想法使他很担心。
二．在引导名词性从句时，What一般要注意一个不（one no）,一个有（meaning）,一个作（component）：what不可引导同为语从句1．不省略what 引导名词性从句时，what 在句中不省略。
这一用法与that 用法不尽相同。
eg. 10) What I had for breakfast today was rice with egg.(what 在句中引导主语从句，what 不省略)11)----I think it’s going to be a big problem.----Yes , it could be .----I wonder what we can do about. (what在句中引导宾语从句，但在句中不省略）2．有词义what 引导名词性从句时，有词义。
一般是“----的东西/事情/话等”这一用法与that 用法不一样eg. 1) This is what she wanted to show us. (what在句中引导表语从句，在句中有词义，意思是“----的东西、事情）这是她想让我们看的东西。
12）What the teacher said had a good effect on the children. (what在句中引导主语从句，在句中有词义，意思是“----的话）老师所说的话对孩子们有很好的作用。
3．作成分what 在引导名词性从句时，在从句中充当成分。
这一用法与that 用法不一样。
Eg. 13)It does n’t matter what he said.( it 是形式主语，what 在句中引导主语从句。
What 在主语从句中作said 的宾语。
)14）It was true ______Alice did surprised her mother.A. that whatB. what thatC. that thatD. all what评析：这一题正确答案是A。
it在句中是形式主语，that引导的是主语从句that Alice did surprised her mother.，在这个主语从句当中，what 又引导了主语从句what Alice did，what在从句中作did 的宾语。
三．要特别提醒同学们的两点：1. What所引导的从句可以在介词后作宾语，而that从句一般不可以。
Eg：15）After months of voyage ,Columbus arrived in _____later proved to be a new continent.A. whereB. whichC. whatD. that评析：答案是C。
因为在介词in 后面，应该用what引导的宾语从句，what在宾语从句中作主语。
而that不可以这样用。
16) On stepping into his room, he was astonished to find the floor covered with _____lookedlike tiny insects.A. thatB. somethingC. whatD. anything评析：答案是C。
因为在介词with 后面，应该用what引导的宾语从句，what在宾语从句中作主语。
而that不可以这样用。
2.that可以引导定语从句，而且是定语从句引导词中的顶梁柱，它在定语从句中要充当成分，通常作定语从句中的主语、宾语。
同时that也可以引导名词性从句，在名词性从句中that 不充当成分。
但What不可以引导定语从句。
它只可以引导名词性从句,在句中相当于what =all that ,what 在名词性从句中充当成分，常常作主语、宾语和表语。
Eg: 17).All _____I want to know is what he meant .A.thatB. whichC. whatD. whatever评析：答案是A.本题是that引导的定语从句。
而what不可以引导定语从句。
What=allthat .又因为先行词是all ，故其后不可以接which 引导的定语从句。
而.Whatever=anything that /no matter what 从意义和语法都不符合。
所以只能选A,that.18) ______impressed me most was ______such a little boy could play the violin so well.A. That ; whatB. What ; thatC. That ; thatD. What ; what评析：答案是B.第一空是what 引导的主语从句，并在主语从句中作主语。
第二空是that 引导的表语从句，that在表语从句中不省略，不作成分，也没词义。
要真正掌握What 和that 在名词性从句中的用法，还得多多操练,熟能生巧（Practice makes perferct）。
练习：一．改错题：1.What we all like him is certain.2.He left is certain.３．I wished that we could go to Beijing this summer and we could buy some books on our way back4.His delay is due to the fact the car went wrong halfway.5.The idea which the world may be destroyed by nuclear weapons came to him.6.The news our team has won is true.7.He said that he had made a big mistake and he felt very sorry for it.8.The reason he did not come is he was ill.9.His delay is due to the fact the car went wrong halfway.10 .When you answer questions in a job interview ,please remember the golden rule: Always give the monkey exactly that he wants.Keys: 1.(what→That) 2.(he 前加that) 3.（在and 后加that）4.（在the car前加that）5.(which→that) 6.(在news 后加that ) 7.(第一个that可以省略，但第二个that不可以省略。
所以要在and 后加that) 8.（在is 后加that)）9.（在fact后加that）10. (将that 改what) 二）高考题：11．[92] It worried her a bit ______ her hair was turned grey.A. whileB. thatC. ifD. for12．[93] _____ he said at the meeting astonished everybody present.A. WhatB. ThatC. The factD. The matter13．[96] _____ we can’t get seems better than _____ we have.A. What / whatB. What / thatC. That / thatD. That / what14．[98] _____ caused the accident is still a complete mystery.A. WhatB. ThatC. HowD. Where15．[01] A computer can only do _____ you’ve instructed it to do.A. howB. afterC. whatD. whenKeys:11-15 BAAAC三）选择题：16．Air to us is ______water to fish.A. whatB. thatC. /D. like17．China is not _____ it used to be .A. thatB. whatC. whichD. /18. After ______seemed to be ten years later, he returned to his hometown.A. whatB. thatC. /D. which19.There are signs ______restaurants are becoming more popular with families.A. thatB. whichC. in whichD. whose20.It is pretty well understood ______controls the flow of carbon dioxide in and out the atmosphere today.A. thatB. when C . what D. how21.______fashion differs from country to country may reflect the culture differences from one aspect.A. WhatB. ThatC. ThisD. Which22.----What made her parents so angry ?----______ she had failed in the exam.A. AsB. BecauseC. SinceD. Thatrmation has been put forward ______more middle school graduates will be admitted into universities.A. whileB. thatC. whenD. as24.----Are you still thinking about yesterday’s game ?----Oh, that’s ______.A. what makes me feel excitedB. whatever I feel excited aboutC. how I feel about itD. when I feel excited25.There is a new problem involved in the popularity of private cars _______ road conditionsneed _______.A. that , to be improvedB. which , to be improvedC. where, improvingD. when , improving26.Word has come ______some foreign guests will come to our school.A. thatB. whetherC. whichD. what27.No one can be sure ______in a million years.A. what man will look likeB. what will man look likeC. what look will like manD. what look will man like.28.____puzzled the police especially was ______the murderer died .A. The thing ; thatB. That ; howC. What ; howD. Which ; how29.Sometimes we are asked _____ the likely result of an action will be .A. that we thinkB. what we thinkC. what do you thinkD. if we think30. The fire destroyed all _____ was in the building .A. whatB. whichC. thatD. how31.It’s certain _____he will come to our rescue.A. whetherB. whatC. thatD. if32. I’m sure ______things will get better and ______we will get out of the trouble soon.A. that ; whichB. /;/C. /; thatD. that ; /33.He was so pleased with all ______we had done for him ______he wrote us a letter to praise usfor it . A. what ; what B. what ; that C. that ; what D. that ; that34.Was it in his office ______the manager made a promise ______he would give me promotion?A. when ; thatB. that ; thatC. when ; whichD. on which ; what35. There is no doubt _____ China will catch up with the developed countries.A. whichB. thatC. whetherD. what36._____he did well in the examination made him happy.A. WhatB. WhichC. ThatD. When37. There is a popular belief among the students _____one cannot hope to achieve success withouthard work. A. which B. that C. / D. what38.Who discovered the truth ______ the earth goes round the sun ?A. whichB. whatC. whenD. that39. By success I don’t mean ______usually thought of when that word is used.A. what isB. that weC. as youD. all is40. Although Anne is happy with her success she wonders ______will happen to her private life.A. thisB. itC. whatD. thatKeys:16-20 ABAAC 21-25 BDBAA 26-30 AACBC31-35CCDBB 36-40 CBDAC。