主语从句

主语从句的构成主语从句是一个包含主语成分的从句，它在句子中充当主语的角色。

主语从句通常由连接词引导，连接词的选择取决于从句的内容。

以下是构成主语从句的基本步骤：选择连接词：主语从句通常由连接词引导，这些连接词包括但不限于：that, whether, who, whom, whose, which等。

确定主语：主语从句中的主语通常是从句中的核心成分。

这可以是一个名词、代词、动名词或从句。

构建从句：使用连接词引导从句，并在从句中构建完整的句子结构，包括主语、谓语、宾语等成分。

下面是一些例子，展示了不同类型的主语从句：连接词"that"：That he arrived late surprised everyone.这里，主语从句"That he arrived late" 在句子中充当主语，表示一种令人惊讶的情况。

连接词"whether"：Whether she will come to the party is still uncertain.这里，主语从句"Whether she will come to the party" 表示一个未确定的情况。

连接词"who"：Who will be the next president is a matter of great debate.这里，主语从句"Who will be the next president" 充当主语，引导了整个句子。

连接词"whose"：Whose book that is on the desk is unknown.这里，主语从句"Whose book that is on the desk" 引导整个句子，表示书的归属未知。

需要注意的是，有时主语从句可以通过重组句子结构，使其更为简洁。

主语从句引导词及用法总结主语从句是复合句中的一种句子成分，常作为主句的主语，由关联词引导。

关于主语从句引导词及用法的总结既包括了关联词的分类、特点和用法，也包括了注意事项和例句的说明。

这篇总结将围绕主语从句引导词展开详细的介绍，希望对您有所帮助。

# 主语从句引导词及用法总结## 一、关于主语从句主语从句是指在复合句中作为主语成分的从句，由关联词引导。

主语从句在句子中起到表达主语的作用，因此在语法上具有非常重要的地位。

主语从句通常由连接词引导，而连接词又可分为关系代词和关系副词等。

接下来，我们将详细介绍主语从句中常见的引导词及其用法，以及一些需要特别注意的地方。

## 二、关于主语从句引导词的分类### 1. 关系代词关系代词在主语从句中的引导作用非常常见。

关系代词包括"that"，"which"，"who"，"whom"和"whose"等。

### 2. 关系副词关系副词在主语从句中的运用也是非常重要的。

关系副词包括"when"，"where"，"why"等。

### 3. 其他引导词除了关系代词和关系副词，有时候一些其他引导词也可以引导主语从句，比如"what"，"whom"等。

## 三、主语从句引导词的特点和用法### 1. "that"的用法- "that"常用于引导主语从句，并且在口语和书面语中都非常普遍。

例如："Ibelieve that he is telling the truth."（我相信他在说实话。

）- "that"在引导主语从句时可以省略，但有时候为了语句的清晰度和连贯性，也可以不省略。

例如："What she said is true."（她说的是真的。

主语从句主语从句的定义：在句子中起主语作用的从句叫主语从句，从句在句中充当主语成分。

主语从句的用法：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，在从句中充当从句的成分。

例如：What he wants to tell us is not clear.It is known to us how he became a writer.Where the English evening will be held has not yet been announced.That he will succeed is certain.Whether he will go there is not known.What he said is not sure.Where he hid the money is to be found out.Whoever comes is welcome.It’s certain that he will succeed.When they’ll start the project has not been decided yet.主语从句考点纵览三、综合练习1. His success was because of ________ he had been working hard.A. thatB. the fact whichC. the fact thatD. the fact2. “Is Mary from New York City” “I don't know _______.”A. from what city does she come fromB. from what city she comeC. what city does she come fromD. what city she comes from3. ________ makes mistakes must correct them.A. WhatB. ThatC. WhoeverD. Whatever4. The reason why I didn't go to Shanghai was ________ a new job.A. because I gotB. because of gettingC. I gotD. that I got5. It worried her a bit ____ her hair was turning grey.A. whileB. thatC. ifD. for6. Henry killed the dog. I'll ask him why ________.A. did he do thatB. he did thatC. he didD. he has done so7. Have you seen Henry lately My boss wants to know ________.A. how he is getting alongB. how is he getting alongC. what he is getting alongD. what is he getting along8. It is generally considered unwise to give a child ____ he or she wants.A. howeverB. whateverC. whicheverD. whenever9. He asked me ________ with me.A. what is the troubleB. what wrong wasC. what was the matterD. what trouble it is10. I am sure ________ he said is true.A. thatB. about thatC. of thatD. that what11. When and why he came here ________ yet.A. is not knownB. are not knownC. has not knownD. have not bee12. I wonder how much ________.A. does the watch costB. did the watch costC. the watch costedD. the watch costs13. Mary is ________ someone might recognize her.A. afraid ofB. afraid aboutC. afraid thatD. afraid for14.________ is no reason for dismissing her.A. Because she was a few minutes lateB. Owing to a few minutes lateC. The fact that she was a few minutes lateD. Being a few minutes late15. They came to the conclusion ________ by a computer.A. that not all things can be doneB. because of not all things be doneC. being not all things can be doneD. because not all things can be done16. Why the explosion occurred was ________ the laboratory attendant had been careless.A. forB. becauseC. sinceD. that17. I don't doubt ________ he'll come.A. thatB. ifC. whatD. whether18. —“Why did you go to the wrong class, Mr. Wang”—“Well, I forget _______ I was supposed to go to.”A. which the roomB. which roomC. what was the roomD. what room was it19. Output is now six times ________ it was before liberation.A. thatB. whichC. whatD. of which20. Mary: Helen is a mere washer woman, yet she's now buying a big house.Carol: Yes. Because she's always saved ________.A. what little she earnsB. how little she earnsC. for little she earnsD. with little she earns21. ______ surprised me most was ______ such a little boy of seven could play the violin so well.A. That…whatB. What…thatC. That…whichD. What…which22. We gave him ________ help we could.A. whichB. whatC. thatD. this23. She is pleased with what you have given him and ________ you have told him.A. thatB. whichC. all whatD. all that24. Excuse me would you please tell me ________A. when the sports meet is taken placeB. when is the sports meet going to be heldC. when is the sports meet to beginD. when the sports meet is to take place25. Do you happen to know ________A. what size shoes he wearsB. how big shoes he wearsC. what is the size of his shoesD. what number shoes are his26. This book will show you ________ can be used in other contexts.A. how you have observedB. how what you have observedC. that you have observedD. how that you have observed27. Where do you think ________A. has he goneB. has he beenC. he's goneD. was he28. Do you know ________A. how many populations there are in the worldB. how much population there is in the worldC. how many the population of the world isD. what the population of the world is29. Would you go and see ________ outsideA. what to take placeB. what Tom has happenedC. what is happeningD. what the matter had been30. The subject of "What is interesting is that I do not even know him." is_______.A. whatB. interestingC. What is interestingD. I31. ________ I think he is Charles.A. Who do you think he isB. Do you think who he isC. Whom do you think he isD. Do you think who he is32. He didn't know which room ________.A. they livedB. they lived inC. did they liveD. did they live in33. The little boy ate ________ his mother gave him.A. thatB. whichC. whateverD. no matter what34. The city is no longer ________.A. what it isB. that it used to beC. which it wasD. what it used to be35. My parents used ________ they had to get a new car for me.A. whichB. thatC. whatD. all what36. ________ we go swimming every day ________ us a lot of good.A. If…doB. That…doC. If…doesD. That…does37. ________ was the idea _______ the wife thought ofA. What…thatB. That…whatC. How…whyD. Why…how38. _______ did he tell his wife ________ he wished to doA. That…whatB. What…thatC. Where…whichD. Which…where39. One of the men held the view ________ the book said was right.A. what thatB. that whatC. that whichD. which that40. I have no idea ________ or not he has finished the work.A. ifB. thatC. whetherD. which41. —“Do you know ________”—“His father is a doctor.”A. what is his fatherB. who is his fatherC. what his father isD. who his father is42. Is this ________ we met each other two years agoA. placeB. place in whichC. whereD. place which43. It ________ Bob drives badly.A. thinks thatB. is thought whatC. thought thatD. is thought that44. We all know the truth ________ there are air, water and sunlight there are living things.A. whereB. whereverC. thatD. that wherever45. They discussed ________ they could settle the problem without others' help.A. ifB. thatC. whatD. whether46. She asked ________.A. what I was doing when she rang me upB. what was I doing when she rang me upC. when she rang me up what I was doingD. when did she ring me up what I was doing47. —May I borrow the ring—You can take _______ you like.A. no matter whatB. whichC. whicheverD. that48. He said that he was fond of ________.A. what beautiful isB. what is beautifulC. beautiful is whatD. what it is beautiful49. He insisted that he ________ in good health and _______ to work there.A. was, be sentB. is, is sentC. be, was sentD. be, send50. Do you know ________ he expects will give us a talkA. whoB. whomC. thatD. whose参考答案1-5.CDCDB 6-10.BABCD 11-15.ADCCA 16-20.DABCA 21-25.BBDDA 26-30.BCDCC 31-35.ABCDC 36-40.DABBC DDD 46-50.ACBAA。

主语从句的构成与用法在英语语法的广阔天地中，主语从句是一个颇为重要的概念。

它不仅丰富了句子的结构，还为我们更准确、丰富地表达思想提供了有力的工具。

那么，究竟什么是主语从句？它又是如何构成的？又有哪些用法呢？让我们一起来揭开它神秘的面纱。

首先，我们来了解一下主语从句的构成。

主语从句是在复合句中充当主语的从句。

简单来说，就是一个句子在另一个更大的句子里扮演了主语的角色。

它通常由以下几种连接词引导：1、 that 引导的主语从句：“That he is a good student is known to us all” （他是个好学生，这是我们都知道的。

）在这种情况下，that 在从句中不充当任何成分，也没有实际的意义，只是起到一个引导的作用。

2、 whether 引导的主语从句：“Whether he will come or not is still a question” （他是否会来还是个问题。

）whether 有“是否”的意思，引导主语从句时，表达一种不确定的情况。

3、连接代词引导的主语从句：像 who（谁）、what（什么）、which（哪个）等连接代词引导的主语从句，在从句中充当主语、宾语或定语等成分。

例如：“Who will be our monitor hasn't been decided yet” （谁将成为我们的班长还没有决定。

）“What he said is very important” （他说的话非常重要。

）4、连接副词引导的主语从句：常见的连接副词有 when（何时）、where（何地）、why（为什么）、how（如何）等，它们在从句中充当状语。

比如：“Where we will have the meeting is not decided” （我们将在哪里开会还没决定。

）接下来，我们看看主语从句的位置。

它通常有两种位置：一种是位于句首，这是比较常见的情况；另一种是用 it 作形式主语，而把主语从句放在句末，以保持句子的平衡，避免头重脚轻。

主语从句的构成主语从句是复合句中的一种从句类型，它在句中充当主语的角色。

主语从句的构成包括引导词和从句本身。

在英语中，常见的引导词有：1. 从属连词：that, whether/if2. 连接代词：what, which, who, whom, whose, whoever, whatever, whichever3. 连接副词：where, when, why, how主语从句通常位于句首或句中，具体位置取决于句子结构和表达的需要。

下面将分别介绍不同引导词的用法和主语从句的构成。

1. 引导词“that”主语从句中常用“that”作为引导词，尤其是在口语和非正式的书面语中，常省略该引导词。

例如：- That he didn't come surprised me.（他没来我感到吃惊。

）- It is important that you arrive on time.（你准时到达很重要。

）2. 连接代词“what, which, who, whom, whose, whoever, whatever, whichever”连接代词根据其所代表的内容不同，在主语从句中使用的方式也有所不同。

2.1. “what”用于对事物提问或引导名词性从句，如：- What you said is true.（你说的是对的。

）- What matters most is your health.（最重要的是你的健康。

）2.2. “which”用于对事物提问或引导名词性从句，且有明确限定范围，如：- Which book you choose is up to you.（你选择哪本书由你决定。

）- I'll take whichever route is shorter.（我会选择任何更短的路线。

）2.3 “who, whom, whose”用于对人提问或引导名词性从句，如：- Who will go with me is undecided.（谁和我一起去还没确定。

主语从句的正确使用技巧主语从句是复合句中的一种重要成分，用来引导句子的主语。

正确使用主语从句可以使句子表达更加准确、简洁。

本文将介绍主语从句的概念、用法以及一些常见的使用技巧。

一、概念主语从句是一个从句，作为一个整体在复合句中充当主语的角色。

主语从句通常由连接词引导，如：that, whether, if等。

二、用法1. 表示事实或观点：主语从句可以用来表达一个事实或观点，如：- That he is talented is undeniable.（他很有才华是不可否认的。

） - Whether he will succeed remains to be seen.（他是否会成功尚未可知。

）2. 引用他人的话语或看法：主语从句可以引用他人的话语或看法，如：- Her mother said that she had to go to bed early.（她妈妈说她得早点上床睡觉。

）- I believe what he said is true.（我相信他说的是真的。

）3. 引导疑问句：主语从句可以用来引导疑问句，如：- What he is looking for is a good job.（他正在寻找的是一份好工作。

）- How he managed to pass the exam remains a mystery.（他如何通过考试仍然是个谜。

）三、使用技巧1. 引导词的选择：根据从句所表达的具体内容，选择合适的引导词。

一般来说，较常用的引导词是that, whether和if。

例如：- They believe that he is innocent.（他们相信他是无辜的。

）- Could you tell me whether/if she is coming?（你能告诉我她是否来吗？）2. 将主语从句放在句首：若主语从句过长或复杂，为了更好的表达意思，可以将主语从句放在句首。

例如：- Whether he will win the game is still uncertain.（他是否会赢得比赛仍然不确定。

主语从句结构主语从句结构：It is+名称+从句，It is+形容词+从句，It is+不及物动词+从句，It+过去分词+从句。

主语从句结构及用法1.It 作形式主语和it引导强调句的比较①主语从句常用it作形式主语，一般常用句型为：It is+{名词/形容词/过去分词}+主语从句另外，还有一些比较多见的结构：It turned out that……;It has been proved that……;It happened/occurred that……;It is well-known that……等等②而强调句则不同，它的结构是：It+be+被强调部分+that+从句判断是否是强调句有一个方法，就是将that以后的“句子的其余部分”拿出来单独看，看有没有缺成分，缺的是什么成分，再把谓语动词后面that前面的那部分，带到你认为缺成分的地方，如果放进去是一句完整的句子了，那就说明是强调句。

2.用it 作形式主语的结构1It is +名词+that从句2it is +形容词+that从句3it +不及物动词+that从句4it is+过去分词+that从句3.主语从句不可位于句首的五种情况1if引导的主语从句不可居于复合句句首。

2It is said ,reported…结构中的主语从句不可提前。

3It happens…,It occurs…结构中的主语从句不可提前。

4It doesn’t matter how/whether…结构中的主语从句不可提前。

5含主语从句的复合句是疑问句时，主语从句不可提前。

4.What 与that 在引导主语从句时的区别What 引导主语从句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。

宾语从句用以区分主语从句的几个特征：1、引导词：what\which\whose\when\whether\if\where2、语序：宾语从句必须是用陈述语句。

（名词性从句都是陈述语序）宾语从句的引导词、连接词的区别、否定转移等现象。

主语从句引导词及用法总结主语从句是我们在英语学习中经常会遇到的一种句型结构，它起到了引导句子的作用，用来引导谓语动词的宾语。

在主语从句中，关键的作用就是由引导词来承担的。

引导主语从句的引导词有各种各样的，下面我们就来一一介绍主语从句引导词及其用法。

1. 关系代词 who/whom/thatwho/whom/that在主语从句中的作用是指代先行词，并在主语从句中充当主语，其用法和意义如下：- Who：用在指人的情况下，who引导的主语从句可以替代先行词为人的名词。

例如：I don't know who will come to the party.（我不知道谁会来参加派对。

）- Whom：也用在指人的情况下，但是一般用在非正式语境或口语中，用于宾语从句中。

例如：Whom do you think the prize should go to?（你认为奖应该给谁？）- That：在主语从句中，that可以指人或物，用于口语和书面语中，并且在非正式语境中常可省略。

例如：The person that makes mistakes should take responsibility.（犯错的人应该承担责任。

）2. 关系代词 which/thatwhich/that用于指代物体或概念，在主语从句中扮演主语的角色。

其用法和意义如下：- Which：强调从句中的物体或概念。

例如：The book which is on the table is mine.（在桌子上的书是我的。

）- That：用于口语和书面语中，可以代替先行词为物，且在非正式语境中常可省略。

例如：The car that was stolen has been found.（被偷的车已经找到。

）3. 关系代词 whatwhat在主语从句中的作用是代替先行词为整个事情或概念，其用法和意义如下：- What：用于代替整个事情或概念。

例如：What happened yesterday was unexpected.（昨天发生的事情是意外的。

主语从句的引导词主语从句是复合句的一种句子结构，它在复合句中作为主句的主语。

主语从句的引导词指的是引导该从句的词语，常见的有“that”，“whether”，“if”等。

本文将重点讨论这些主语从句的引导词的用法和注意事项。

一、引导词“that”引导词“that”是主语从句中最常见的引导词之一，用来引导陈述句的主语从句。

例如：1. That he is successful is not surprising.（他成功并不令人惊讶。

）2. That she has never been to Paris is a pity.（她从未去过巴黎真是遗憾。

）需要注意的是，当主语从句中的谓语动词是及物动词时，通常要保留从句中的主语，并在主句中使用it作为形式主语。

例如：1. It is important that we protect the environment.（保护环境是很重要的。

）2. It is necessary that she arrive on time.（她必须准时到达。

）二、引导词“whether”引导词“whether”通常用来引导一个陈述句作为主语从句，用于表示“是否”的意思。

例如：1. Whether he will come to the party is still uncertain.（他是否会来参加派对还不确定。

）2. Whether it's going to rain tomorrow is hard to predict.（明天是否会下雨很难预测。

）需要注意的是，当主句的谓语动词是一个疑问词时，可以使用“whether”或“if”引导主语从句。

例如：1. I don't know whether/if she can make it to the meeting.（我不知道她是否能参加会议。

）2. Can you tell me whether/if there is a bus to the airport?（你能告诉我是否有去机场的公交车吗？）三、引导词“if”引导词“if”也可以用来引导一个陈述句作为主语从句，与“whether”用法相似，用于表示“是否”的意思。

主语从句的引导词及用法解析主语从句是一个句子中的主语部分，它通常由一个引导词引导而成。

常见的主语从句引导词有：that, whether, what, if, who, whom, whose, which, whoever, whatever, whichever等。

本文将对这些引导词及其用法进行解析。

一、that1. 在主语从句中，that常用来引导宾语从句，表示某情况或事实。

例如：- That he is coming is not certain.(他是否来还不确定。

)- The fact that she failed the exam disappointed her parents.(她考试不及格这个事实让她父母失望。

)2. that可用来引导表语从句。

例如：- His suggestion is that we should start early tomorrow.(他的建议是我们明天早点出发。

)3. that还可用来引导主语从句中的主语部分，并在从句中充当形式主语。

例如：- That he is lazy is a fact.(他很懒是事实。

)二、whether/ifwhether和if一般可互换使用，用来引导主语从句表示“是否”。

例如：- Whether/if they will win the game remains to be seen.(他们是否会赢得比赛还有待观察。

)- I don't know whether/if she can come to the party.(我不知道她是否能来参加派对。

)三、what1. what可用来引导主语从句表示“某事物”或“某种情况”。

例如：- What he said was very interesting.(他所说的事情很有趣。

)- What you've done will have a great impact on our future.(你所做的事情对我们的未来会有很大的影响。