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。
2020年高考英语之高频考点解密九 名词性从句(含答案)
解密09名词性从句【命题解读】1.了解名词性从句的基本用法，掌握名词性从句的引导词及引导词在名词性从句中的作用，辨析that 与what,if与whether等引导词的用法。
2.明确it作形式主语和形式宾语、代替主语从句及宾语从句的用法，及其与强调句的区别。
3.区分that引导的同位语从句及定语从句。
【命题预测】预计今后高考对名词性从句的考查仍然不会单纯地考查其语法结构，而是将其融入一定的语境中来考查考生的实际综合运用能力。
【复习建议】1. 掌握宾语从句的用法；2. 了解同位语从句的用法；3. 掌握表语从句的用法；4. 掌握主语从句的用法；5. 如何正确选择引导词。
主语从句是在复合句中担任主语的句子。
其特点有：（1）引导词：从属连词that, whether；连接代词who, what, which；whoever, whatever, whichever;连接副词when, where, how和why。
（2）语序：陈述句语序（3）在主语从句中只能用whether,不能用ifThat he will win the match is certain.It is certain that he will win the match.1. 一般来说主语从句都是放在句首，但有时为了使句子保持平衡，避免"头重脚轻",常用it 作形式主语，从而把主语从句放后面。
常以it作形式主语的句型有：①It is＋形容词＋that...☞It is certain that she will do well in her exam．毫无疑问她考试成绩会很好。
②It is＋名词词组(no wonder，an honour，a good thing，a pity，no surprise，common knowledge，a surprise，a fact，etc．)＋that...☞It’s a pity that we can’t go．很遗憾我们不能去。
选择性必修二Unit2重点语法：名词性从句总复习
选择性必修二Unit2重点语法：名词性从句总复习复习名词性从句【基础知识讲解】（1）高频考点：what，that用法区别;各连接词的用法（2）需掌握知识点1.名词性从句的定义，分类;2.连接词的辨别，用法;3.从句语序;4.时态（3）做题思路1. 判断是否为名词性从句2. 看从句缺不缺主干成分缺，用连接代词；不缺，用连接副词或连接词；翻译看意思（4）易错点1.强调句和主语从句的区别: 强调句去掉it is/was…… that/who句子仍完整，主从去掉后不完整2.定语从句和同位语从句区别需掌握知识点:1.定义：主、宾、表、同位语从句2.名词性从句和其他从句的区别：从句在主句中做主语，宾语，表语，同位语，分别对应主语从句，宾语从句，表语从句，同位语从句。
3.连接词1). 从属连词：that, whether/if that：无词义，在宾从中可省（在从句中不做成分）区别：whether/if：有词义：是否例句I think (that) you are right.I don’t know whether (≠ if ) or not I should take his advice .They asked whether (= if ) we need any help.What he wants to tell us is not clear.Who will win the match is still unknown.以及：whoever, whomever, whichever, whateverwhere：哪里3). 连接副词：why：为什么（有词义，在从句how：怎么样中作状语，具体选when：什么时候择按意思）例句It is known to us how he became a writer.Where the English evening will be held has not yet been announced.以及：wherever, however, whenever注意事项：1. what，that区分：what在从句中可做主语，宾语，表语，有两个意思：东西，什么；而that在从句中不做任何成分，也没有任何意思。
从句连接词的区别
从句连接词的区别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。
连接词有什么区别呢?下面就跟着店铺一起来看看吧。
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 。
高二英语名词性从句中what与that区别练习题40题
高二英语名词性从句中what与that区别练习题40题1.She told me that she had a beautiful dress. But I didn't know what color it was.A.thatB.what答案：B。
what 在名词性从句中起连接作用且在从句中充当成分，这里what color it was 表示“它是什么颜色”，what 在从句中作定语修饰color。
而that 在名词性从句中只起连接作用，不充当任何成分，在这里不合适。
2.I know that he is a good student. But I don't know what kind of person he is.A.thatB.what答案：B。
what kind of person he is 表示“他是什么样的人”，what 在从句中作定语修饰person。
that 在名词性从句中只起连接作用，不充当任何成分，在此处不合适。
3.He said that he would come. But I didn't know what time he would arrive.A.thatB.what答案：B。
what time he would arrive 表示“他什么时候会到”，what 在从句中作定语修饰time。
that 在名词性从句中只起连接作用，不充当任何成分，这里不合适。
4.I heard that there was a party. But I didn't know what place it was held at.A.thatB.what答案：B。
what place it was held at 表示“在什么地方举行”，what 在从句中作定语修饰place。
that 在名词性从句中只起连接作用，不充当任何成分，不适合此处。
英语重点语法解析what、that和which
英语重点语法解析what、that和which①迪米特里从地里回来，妻子把发生的情况跟他说了。
他马上出去找偷羔羊的人。
请心中有结果再看答案哦：①When Dimitri came in from the fields, his wife told him what had happened. Dimitri at once set out to find the thief.节选《新概念英语3 Mary had a little lamb》（1）what引导的定语从句①句子分析首先分析句子，前半句有个动词，从…回来，中间有一个“说”的动词，并且还有一个过去“发生”的情况。
所以第一句话有三个动词。
其中有两个动作发生有时间基本一致，一个动作发生的在以前。
就是她的丈夫一近门就给他说事，说之前发生的事。
所以我们在句子中使用过去时来表达主句。
When Dimitri came in from the fields, his wife told him…两个动作发生几乎同步。
②come in的含义come in表示回来，回到家里。
之前有说过，英语中介词的指向性。
in 就是“里”。
这里多说一个field这个单词。
③field的含义与用法field在文章中作“田地、牧场”之意。
但在以后的学术文章里，这个单词的主要用法是表示“领域”用。
She was established in the educational field. 她已在教育界安身立业。
Our research field is called computer vision and machine learning. 我们研究的领域称之为计算机视觉与机器学习。
④what与that和which引导的定语从句的区别定语从句大家用得多的，比较熟悉的是that和which作引导词，那么what也在作引导词时，与他们有什么区别呢？首先，what引导的名词性从句，that和which也可以表达出同样含义。
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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 doesn’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 what B. what that C. that that D. 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. where B. which C. what D. 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 _____looked like tiny insects. A. that B. something C. what D. 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. that B. which C. what D. 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=all that .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 ; what B. What ; that C. That ; that D. 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 back 4.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. while B. that C. if D. for 12．[93] _____ he said at the meeting astonished everybody present. A. What B. That C. The fact D. The matter 13．[96] _____ we can’t get seems better than _____ we have. A. What / what B. What / that C. That / that D. That / what 14．[98] _____ caused the accident is still a complete mystery. A. What B. That C. How D. Where 15．[01] A computer can only do _____ you’ve instructed it to do. A. how B. after C. what D. when Keys:11-15 BAAAC 三）选择题： 16．Air to us is ______water to fish. A. what B. that C. / D. like 17．China is not _____ it used to be . A. that B. what C. which D. / 18. After ______seemed to be ten years later, he returned to his hometown. A. what B. that C. / D. which 19.There are signs ______restaurants are becoming more popular with families. A. that B. which C. in which D. whose 20.It is pretty well understood ______controls the flow of carbon dioxide in and out the atmosphere today. A. that B. when C . what D. how 21.______fashion differs from country to country may reflect the culture differences from one aspect. A. What B. That C. This D. Which 22.----What made her parents so angry ? ----______ she had failed in the exam. A. As B. Because C. Since D. That 23.Information has been put forward ______more middle school graduates will be admitted into universities. A. while B. that C. when D. as 24.----Are you still thinking about yesterday’s game ? ----Oh, that’s ______.