What--和that-在名词性从句中的用法区别
pep初中语法 名词性从句中that和what的用法区别
第3题补充3. 名词性从句中that和what的用法区别(转载)(2007-12-13 18:20:19)名词性从句中that和what的用法区别一．that 引导的名词性从句首先，连接代词that除引导第一个宾语从句时可以省略外，引导其他各类名词性从句皆不能省略。
例如：①It is required in the regulations that you should not tell other people the password of youre-mail account.②---- Don’t you think it necessary that he go home at once?---- but the problem is that there is no car.③There is much chance that Bill will recover from his injury in time for the race.④Our English teacher told us (that) we all did very well in the examination and that ten of us gotfull mark.以上四个句子中，that 分别引导主语从句，表语从句，同位语从句和宾语从句，除在第四个例句中第一个that 可以省略外，其他的that 均不可省略。
其次，在引导名词性从句时，that不作句子中的任何成分。
例如：①Nobody believed his reason for being absent from the class that he had to meet his uncle at theairport.该句中，that引导同位语从句，但在句中不作任何成分。
②It is our belief that improvements in health care will lead to a stronger, more prosperous economy.该句中，it 是形式主语，that引导的主语从句才是整个句子的真正主语，that在句中不作任何成分。
：what,that,where ,who ,how在不同从句中的用法
Whether he has left, I can’t say. 他是否走了，我说不定。
②引导主语从句且放在句首时：Whether he will come is still a question. 他是否会来还是个问题。
【注】若在句首使用形式主语 it，而将主语从句放在句末，则有时也可用 if 来引导：It was not known whether [if] he would come. 不知他是否会来。
③ 引导表语从句时：The question is whether we should go on with the work. 问题是我们是否应该继续进行这项工作。
【注】在很不正式的场合if偶尔也用于引导表语从句，但远不如用 whether 常见。
④ 引导让步状语从句时：Whether he agrees or not, I shall do that. 不管他同意与否，我都要那样做。
⑤ 引导同位语从句时：The question whether we need it has not been considered. 我们是否需要它还没有考虑。
⑥ 用于不定式之前时：I’m not sure whether to stay or leave. 我不知是留还是去。
I didn’t know whether to laugh or to cry. 我真是哭笑不得。
⑦用于介词之后时：It depends on whether the letter arrives in time. 这取决于信是否来得及时。
I worry about whether I hurt her feelings. 我担心是否伤了她的感情。
⑧直接与 or not 连用时：I will write to you whether or not I can come. 我能不能来，我将写信告诉你。
【注】若不是直接与 or not 用在一起，则有时也可用 if：I don’t know whether [if] he will win or not. 我不知他是否能赢。
what和that的用法讲义--2023届高三英语复习备考
what和that的用法讲义what和that都是从句的引导词，或者说，都是可以连接主句和从句的连词。
要弄清楚这两个词的用法，我们首先要明确what和that分别都可以引导哪些从句。
一.关于whati what是名词性从句的引导词，名词性从句包括主语从句，宾语从句，表语从句，同位语从句。
所以，what可以引导的从句也就是上面提到的四类从句。
二.关于that(①that是名词性从句的引导词，所以，that也可以引导主语从句，宾语从句，表语从句，同位语从句。
②that是定语从句的引导词，所以，that还可以用来引导定语从句，放在所修饰的名词后面。
我们来看这样几个句子：1.This is what we are looking forward to. (表语从句)这是我们一直所期待的事情。
【分析】what引导的从句，放在了系动词is后面，放在表语的位置，是表语从句。
此时，what=the thing that所以，上面的句子可以改写成：This is the thing that we are looking forward to.2. What makes this shop different(主语从句)is that it offers more personal services. (表语从句)这家店与众不同的地方在于它提供更多的个人服务。
【分析】what引导的句子，放在句子开头，位于系动词is前面主语的位置，是主语从句。
此时，what=the thing that所以，上面的句子可以改写成：The thing that makes this shop different is that it offers more personal services .此外，原句that 引导的句子放在系动词is后面，放在表语的位置，所以是表语从句。
3. There are signs that restaurants are becoming more popular with families. (同位语从句)有迹象表明，餐馆在家庭中越来越受欢迎。
what与that引导名词性从句的区别分析
what与that引导名词性从句的区别分析英语语法让很多学生都头疼，但其实还是有区别的，下面是店铺给大家带来的有关于what与that引导名词的介绍，希望能够帮助到大家。
what与that引导名词性从句的区别I think __________ he needs is more practice.Yes. __________ he needs more practice is clear.A. what, WhatB. that, ThatC. what, ThatD. that, What此题应选C。
其余三项均可能被误选。
what 和that 都可以引导名词性从句，但有区别。
如：1. what 引导名词从句时，它在从句中要充当句子成分(主语、宾语等)，而 that 引导名词从句时，它在从句中不能充当句子成分。
2. what 引导名词从句时，它有词义(表示：什么;所的[东西]);而that 引导名词从句时，它没有词义。
请做以下试题，注意区别 what 和 that。
如：1. ________ you said is different from the thing ________he told us.A. What, whatB. That, thatC. What, thatD. That, what2. I think ________ he said is trueBut dont forget the fact ________he is a cheat.A. what, whatB. that, thatC. what, thatD. that, what3. ________ surprised us most is ________he spoke English so well.A. What, whatB. That, thatC. What, thatD. That, what答案：1. C 2. C 3. C高中英语的情态动词的介绍1. You went late _______ the stadium yesterday evening, didnt you? Yes, my wife was a little late _______ the supper.A. to, withB. for, withC. for, forD. at, for【陷阱】容易误选 B 或D。
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。
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.
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。
that与what引导名词性从句的区别
that与what引导名词性从句的区别that引导名词性从句只起连接作用，在从句中不作任何成分，无意义，在宾语从句通常省略，但在主语从句、表语从句和同位语从句中均不能省略；what除引导从句外，还在从句中作成分，意为“所……的(东西)”，在含义上等于“名词+that”。
如：1. 用that的例子That she lacks experience is obvious. 她缺少经验，这是显然的。
The police learned that he wasn’t there at that tim e. 警察获知他那时不在场。
He realized that she too was exhausted. 他意识到她也精疲力尽。
My idea is that you shouldn’t have left the country. 我的意见是你不应该离开那个国家。
Bob has the mistaken idea that tomorrow is a holiday. 鲍勃错误地认为明天是一个假日。
It was quite plain that he didn’t want to come. 很明显他不想来。
It is natural that they should have different views. 他们看法不同是很自然的。
2. 用what的例子What (=The thing that) he said was true. 他所讲的是事实。
What he had hoped at last came true. 他希望的事终于成为现实。
What he said is beneath contempt. 他说的话不值一理。
What he says is true, possibly. 或许他说的是对的。
What she saw gave her a fright. 她看到的情况吓了她一跳。
名词性从句中连接词的用法
名词性从句中连接词的用法名词性从句是一个在句中充当一个名词的从句。
它可以作为主语、宾语、表语、同位语或介词的宾语。
连接词在名词性从句中起到引导从句的作用，常见的连接词有：that, whether, who, whom, whose, which, what, when, where, why, how等。
下面将详细介绍名词性从句中这些连接词的用法。
1. 连接词“that”连接词“that”在名词性从句中的使用非常常见，尤其在作为主语或宾语时。
例如：- 主语从句：That he is late is unacceptable.- 宾语从句：I believe that he will come back.2. 连接词“whether”连接词“whether”常用于表示选择或疑问的情况，用于引导名词性从句作为宾语。
例如：- I don't know whether he is coming or not.- Please let me know whether you can attend the meeting.3. 连接词“who/whom/whose”这些连接词用于引导名词性从句中的主语或宾语从句，分别对应着人的身份、人的宾语以及人的所有格。
例如：- 主语从句：Who will go with me is not decided yet.- 宾语从句：I don't know whom he is talking to.- 表语从句：The one whose car was stolen has already reported to the police.4. 连接词“which/what”连接词“which/what”通常用于引导名词性从句中的主语或宾语从句，其中“which”用于限定从句，而“what”用于不限定从句。
例如：- 主语从句：Which color to choose is a difficult decision.- 宾语从句：She doesn't know what he wants.- 同位语从句：The news that she won the competition is exciting.5. 连接词“when/where/why/how”这些连接词分别表示时间、地点、原因和方式，用于引导名词性从句中的宾语从句。
三大从句中的what,that和 which
三大从句中的what， that和 which一．在名词性从句(主语从句、宾语从句、表语从句、同位语从句)中that 不充当任何句子成分，which 作定语，What 充当主语、宾语、表语等。
Eg:It so happens that I know the man. (主语从句)We have reason to believe that the fighting on the border may develop into a full-blown war.（宾语从句）The trouble is that we are short of money.（表语从句）The fact that she looked like a sensitive , kind girl didn’t matter.（同位语从句）I don’t know which class he is in.What he does doesn’t agree which what he says.二．在定语从句中，what 不能引导定语从句，只需区分 that和which。
1.that 的先行词既可以是人，又可以是物，而which 的先行词只能是物。
2.当先行词是物时，that 和which经常可以互换。
Eg:Do you still remember the days that/which we spent together?Is this the museum that/which we visited last year?3. 不可互换的情况：用that 不用which有8种情况：(1).当先行词被不定代词修饰或先行词本身是不定代词时。
不定代词有28个：every/no/any/some (thing one body) much many (a) little/few all both none neither either each 。
that what引导名词性从句区别
引导名词性从句本身无意义只起连接作用在从句中不做成分但不能省略宾语从句除外
7 The reason is that his bike has broken down.
8 He said (that) he would come on time.
9 The fact that he had said nothing surprised everybody. 10 I didn’t know what he wanted to say.
whatever/whoever 无论什么/谁 whatever = anything that whoever= anyone who e.g. 1). Whoever comes first wins the prize. 2). People/Those who come first win the prize. 3). It is unwise to give a kid whatever he wants. 4). Who broke the glass is not important. 5). Whoever broke the glass should be punished. 6). It is unwise to give a kid whatever he wants.
what = the n/pron + that/ which ， 可转换为定 语从句 e.g. What you said is true. = The thing that you said is true .
1 What seems right to me seems wrong to him. 2 The girl isn’t what she was 10 years ago.
学位英语语法-各种从句
（1）Can you tell me _____ about the city that makes people love it so much? A. it is what B. what it is C. what is it D. is it what （答案：B。宾语从句用陈述句的语序。）（1999 年 47 题） （2）No one doubts _____ it is true. A. whether B. if C. that d. what （答案：C。I doubt whether/if…我怀疑。I don’t doubt that …我毫不怀疑。又如：I doubt whether he can speak English. 我怀疑他是否会说英语。） （1997 年 38 题） 介词后面的宾语从句 （1）The people at the party were worried about Janet because no one was aware _____ she had gone. A. where that B. of where C. of the place D. the place （答案: B。where 引导的从句做介词的宾语。）（1998 年 48 题） （2）He was a man of fine character in all points _____ he was rather timid. A. in that B. except that C. for that D. except for （答案：B）（1997 年 53 题） suggest，insist，order，demand 等动词后作宾语时，表示欲望、建议、命令等时，用虚拟 语气。 （1）His mother insisted that he _____ the coat when going out. A. put on B. puts on C. to put D. putting on （答案：A）（1999 年 58 题） （2）The doctor advised that Mr. Malan _____ an operation right away so as to save his life. A. had B. would have C. have D. was going to have （答案：C）（1998 年 28 题） 练习： 1. I don't know _________ the day after tomorrow． A．when does he come B．how will he come C．if he comes D．whether he'll come 答案是 D 2. Could you tell me _________ the radio without any help？ A．how did he mend B．what did he mend C．how he mended D．what he mended 答案是 C 3. Do you know where _________ now？ A．he lives B．does he live C．he lived D．did he live 答案是 A 4. 表语从句 在从句中做表语的从句叫表语从句。它位于主句中的系动词之后，常用的关联词和主语从句 相同。 （1）This is what he wants. 这就是他想要的东西。
What和that-在名词性从句中的用法区别
What和that 在从句中的用法区别一.W hat和that 都可以引导名词性从句。
(主语、宾语、表语、同位语从句)That: 1不省略(宾语从句除外) 2．不作成分 3.没词义What: 1．有词义2．作成分(从句中充当成分，常常作主语、宾语和表语)3不可省1) That you don’t like him is none of my business.2) I’m writing to tell you (that) Li Hua is going to your city for a conference .3) The thought that he might fail in the exam worried him.(=The thought worried him that he might fail in the exam)4) What some scientists have found is that their long-term use can sometimes harm boththe land and people’s health.5) What keeps them from doing so is the fact that chemical farming severs the highdemand for food around the world.6）Li Ping is what is generally called a “living Lei Feng”7）Sydney kept his promise that he would always do what he could for Lucia to make sure of her happiness.8）After what seemed to be ten years , he returned to his hometown.9)No one really knows when the first people arrived in what we know as California.二．that可以引导定语从句，有词义（指人或物），在定语从句中要充当成分，通常作定语从句中的主语、宾语。
what与that用作连接词引导从句的区别
当what 用作连接代词，引导名词性从句时，可引导主语从句、表语从句和宾语从句（不可引导同位语从句）；它本身在句中充当主语、宾语或表语。
[ 解题过程]注意what 和that 引导名词性从句的差别：一、当what 用作连接代词，引导名词性从句时，可引导主语从句、表语从句和宾语从句（不可引导同位语从句）；它本身在句中充当主语、宾语或表语。
1、what 表示所以 ... 的（事）"的意思，相当于“thehing（s） that ... 、“atlhat ....... ”、“thaWhich ... ” “everythig that ...... 等。
例如：（1）Leave it with me and I 'slel e what I can do.（what 引导宾语从句，并作do 的宾语。
）（2）What you have done might do harm to other people. （what 引导主语从句，并在从句中作宾语。
）（3）What he said at the meeting astonished everybody present. （what 引导主语从句，并在从句中作宾语。
）（4）What is most important in life isn 'm t oney. （what 引导主语从句，并在从句中作主语。
）（5）But wait till you see what we' mll ake for you to your own measure. （what 引导宾语从句，并在从句中作宾语。
）（6）What he wanted to see was an end to all the armies of the world. （what 引导主语从句，并在从句中作宾语。
）2、what表示所 ..... 的（人）"的意思，相当于“thperson that ............ 等。
名词性从句的引导词
名词性从句的引导词名词性从句是指在句中充当名词的从句，它可以作主语、宾语、表语、同位语等。
引导名词性从句的词语被称为名词性从句的引导词。
名词性从句的引导词包括关系代词、连接代词与连接副词。
本文将介绍名词性从句的引导词以及它们在句中的不同用法。
一、关系代词1. 关系代词“that”关系代词“that”在引导名词性从句时可作主语、宾语、表语等。
作同位语：- 我相信他会成功的事实。
作表语：- 成功了并不意味着他很快乐。
2. 关系代词“which”关系代词“which”在引导名词性从句时主要作定语，修饰主句中的名词或代词。
作定语：- 这是一本我读过的最好的书。
作定语，修饰整个句子：- 她得到了自己一生中最珍贵的礼物，这让她非常感动。
3. 关系代词“who”关系代词“who”在引导名词性从句时主要作主语、宾语等。
作宾语：- 他遇到了一个非常有趣的人，他能和他聊天很开心。
作宾语补足语：- 她把奖品送给了那个帮助过她的人。
二、连接代词1. 连接代词“what”连接代词“what”在引导名词性从句时主要作主语、宾语等。
作主语：- 他们的关系到底是什么让他们走到了一起。
作宾语：- 我无法理解你表达的意思是什么。
2. 连接代词“whatever”连接代词“whatever”在引导名词性从句时主要作宾语、宾语补足语等。
作宾语：- 无论你做什么决定，我都会支持你。
作宾语补足语：- 我的决心是无论发生什么困难，都不放弃。
三、连接副词1. 连接副词“how”连接副词“how”在引导名词性从句时主要作宾语等。
作宾语：- 我不知道他是如何成功的。
2. 连接副词“when”连接副词“when”在引导名词性从句时主要作宾语等。
作宾语：- 我无法预测他们何时会来。
无论是关系代词、连接代词还是连接副词，它们在引导名词性从句时都充当特定的角色，使整个句子更加准确和流畅。
通过熟练掌握它们的用法，我们能够更好地理解和运用名词性从句，提升自己的写作和表达能力。
定语从句that和what的区别
定语从句that和what的区别定语从句that和what的区别导语：定语从句that和what的区别是?以下是店铺为大家整理的文章，欢迎阅读!希望对大家有所帮助!定语从句that和what的区别一、引导词what与that在引导名词性从句的用法区别引导主语、宾语或表语从句时，what在从句中要充当句子成分;而that引导主语、宾语、表语和同位语从句时，不作任何成分，只起语法连接作用。
试比较：That George W. Bush won the presidency once again was what many people hadn't expected.乔治?布什再次赢得总统大选，这是很多人没有预料到的。
It is the same old story of not being grateful for what we have until we lose it.事情往往是这样，失去之物，方知。
二、引导词what与that在引导定语从句的用法区别首先，要记住在定语从句中，跟本不用what连接词。
只有that和which.所以大家在做题中，如果是定语从句，就不要再考虑what了。
That 在定语从句中，一般可以作从句的主语。
宾语和表语。
例如：1、(2005北京春季卷) Do you still remember the chicken farm ____ we visited three months ago?where B when C that D what「分析」C 定语从句连词，that做从句visit的宾语。
没有what 连词。
2、He is not the naughty boy that he used to be.他不再是从前那个调皮的'男孩了。
巩固性练习：从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. (2005福建卷) --Is that the small town you often refer to?--Right， just the one _____ you know I used to work for years.A thatB whichC whereD what2. ____ should be done must be done in time.A WhatB AllC AnythingD All what3. A computer is so useful a machine ______ we can use everywhere.A thatB whichC asD what4(2005天津卷)last month， part of Southeast Asia was struck by floods，from _____effects the people are still suffering.A thatB whoseC thoseD what5. (2005湖北卷) Her sister has becomes a lawyer， _____ she wanted to be.A whoB thatC whatD which6. (07安徽) You can only be sure of _____ you have at present; you cannot be sure of something ____ you might get in the future.A that; whatB what;/C which; thatD /;that7. (07陕西) _____ parents say and do has a life-long effect on their children.A ThatB WhichC WhatD as8. (07上海) ____ he referred to in his article was unknown to the general readers.A ThatB WhatC WhetherD Where9. (2006全国卷II)--What did your parents think about your decision?----- They always let me do ____ I think I should.A. when B that C.how D. what10. (2005上海卷)The other day，my brother drove his car down the street at ___ I thought was a dangerous speed.A. as B which C. what D. that1. C 定语从句，one是先行词2. A what引导主语从句，做从句中can的主语。
what和that引导名词性从句的用法与区别讲义- 高三英语一轮复习
what引导名词性从句的五种用法一、用法归纳1. 表示“……的东西或事情”They’ve done what they can to help her. 他们已经尽力帮助了她。
He saves what he earns. 他赚多少，积蓄多少。
What Mary is is the secretary. 玛丽的职务是秘书。
2.表示“……的人或的样子”He is no longer what he was. 他已经不是以前的那个样子。
He is what is generally called a traitor. 他就是人们通常所说的叛徒。
Who is it that has made Fred what he is now? 是谁把弗雷德培养成现在这个样子的？3. 表示“……的数量或数目”Our income is now double what it was ten years ago. 我们现在的收入是10年前的两倍。
The number of the students in our school is ten times what it was before liberation.现在我校学生的数量是解放前的10倍。
4. 表示“……的时间”After what seemed like hours he came out with a bitter smile.似乎过了几个小时他才苦笑着出来。
The young girl was too frightened to speak,standing there for what seemed like hours.小女孩吓得不敢说话，在那儿站了几个小时。
5. 表示“……的地方”This is what they call Salt Lake City. 这就是他们称为盐湖城的地方。
In1492,Columbus reached what is now called America.1492年哥伦布到达了现在所称的美洲大陆。
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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）：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“----的东西、事情）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 co mputer 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。