主语从句
九种英语主语从句
九种英语主语从句英语中的主语从句是一种句子结构，用来作为句子的主语。
它可以替代一个名词，在句子中起主语的作用。
以下是九种常见的英语主语从句：1. 以that引导的主语从句主语从句以that引导，用来表达它所引导的内容是主要的或重要的。
例如：That he arrived late was disappointing.2. 以whether或if引导的主语从句主语从句以whether或if引导，用来表达对某件事情的疑问或是不确定。
例如：3. 以疑问词引导的主语从句主语从句以疑问词引导，用来回答对某事情的问题。
例如：What she said was really surprising.4. 以动词不定式引导的主语从句主语从句以动词不定式引导，用来表达对某件事情的目的或意图。
例如：To finish the project on time is our main goal.5. 以-ing形式引导的主语从句主语从句以-ing形式引导，用来表达对某事情的现实、可能或不可能。
例如：Swimming in the pool is not allowed.6. 以从属连词that引导的主语从句主语从句以从属连词that引导，用来表达对某事情的描述、判断或信念。
例如：That he is a talented musician is well-known.7. 以it作为形式主语引导的主语从句主语从句以it作为形式主语引导，而真实主语通常位于句子后部。
例如：It is important to have a healthy lifestyle.8. 以as if / as though引导的主语从句主语从句以as if或as though引导，用来表达对某事情的比喻、相似或假设。
例如：He acted as if he knew everything.9. 以现在分词引导的主语从句主语从句以现在分词引导，用来表达对某事情的原因、结果或条件。
什么是主语从句
什么是主语从句？主语从句是指在一个句子中，作为主语的从句。
从句是由一个连接词引导的子句，它具有主语的功能，并在句子中起到主语的作用。
主语从句通常由连接词“that”、“whether”、“if”、“who”、“what”、“which”等引导。
以下是一些关于主语从句的例子：1. That从句：- "That he is late is not surprising."（他迟到并不令人惊讶。
）这个从句“That he is late”起到整个句子的主语作用。
2. Whether或If从句：- "Whether she will come to the party is still uncertain."（她是否会来参加派对还不确定。
）这个从句“Whether she will come to the party”作为整个句子的主语。
3. Wh-从句：- "Who will win the game is yet to be determined."（谁会赢得比赛还有待确定。
）这个从句“Who will win the game”起到整个句子的主语作用。
4. What从句：- "What she said was very inspiring."（她说的话非常鼓舞人心。
）这个从句“What she said”作为整个句子的主语。
5. Which从句：- "Which book to read is up to you."（读哪本书由你决定。
）这个从句“Which book to read”起到整个句子的主语作用。
主语从句在句子中起到主语的作用，它可以是句子的焦点，也可以用来引入一个话题或提出一个问题。
使用主语从句可以使句子更加丰富多样，并且可以帮助我们表达更复杂的思想。
在使用主语从句时，需要注意以下几点：-主语从句通常位于句子的开头或主语之后。
主语从句
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。
英语从 主语从句语法
英语从主语从句语法主语从句是英语语法中的一个重要概念，它在句子中充当主语的角色，起到引导整个句子的作用。
掌握主语从句的使用方法，对于提高英语语言表达能力和句子结构的多样性有着重要的意义。
本文将详细介绍关于主语从句的语法规则和使用技巧，以帮助读者更好地理解和运用主语从句。
一、主语从句的定义和特点主语从句是一种从句类型，它由一个引导词引导，放在句子的主语位置，起到句子的主语作用。
主语从句可以是一个单词或词组，也可以是一个完整的句子。
主语从句通常由连接词that, whether/if, who, which, when, where, why等引导。
二、主语从句的语法规则1. 引导词that引导的主语从句主语从句中的引导词that常常被省略，特别是在口语和非正式的写作中。
例如：“It is important to study hard.”（努力学习很重要。
）2. 引导词whether/if引导的主语从句引导词whether/if经常用于引导主语从句，表达对某件事情进行选择或疑问。
例如：“Whether we should go hiking tomorrow is still under discussion.”（我们是否应该明天去徒步还在讨论中。
）3. 引导词who, which, what引导的主语从句这些引导词引导的主语从句通常涉及人或事物的具体内容，用来强调或描述主语。
例如：“Who will be the winner of the competition is still unknown.”（谁会成为比赛的获胜者，还是未知的。
）4. 引导词when, where, why引导的主语从句这些引导词通常用来引导时间、地点和原因状语从句，也可以用作主语从句。
例如：“When the concert will take place is yet to be announced.”（音乐会将在何时举行，尚未宣布。
主语从句公开课PPT课件
主语从句可以包含丰富的信息， 包括时间、地点、条件、原因等
，使表达更加准确具体。
通过主语从句可以精确地描述某 个事件或情况，避免歧义和误解
。
主语从句还可以用来表达复杂的 观点和态度，使文章更具深度和
说服力。
增加文采和感染力
主语从句可以采用多种句式和表达方 式，如倒装句、强调句等，增加文章 的文采和感染力。
连接代词和连接副词引导的主语从句一般放在句首，谓语动词用单数形式。
连接代词what和which在引导主语从句时，有时可以互换使用，但which更强调选 择范围。
主语从句时态、语态和语气
03
问题
时态问题
主语从句时态与主句时态一致
01
主语从句中的动词时态通常与主句中的动词时态保持一致，表
示同时发生的动作或状态。
当主语从句中的主语是表示数量的短语（如a number of, the majority of等）时，谓 语动词的单复数形式取决于短语所修饰的名词。
主语从句中的主语是并列结构时，谓语动词用复数形式
当主语从句中的主语是由and连接的并列结构时，谓语动词用复数形式。
练习题讲解
选择题
通过选择题的形式， 让学生判断主语从句 中主谓一致问题的正
当主语从句中的主语是复数形式时，谓语动词必须与主语保持一致，也用复数形式。
特殊情况处理方法
主语从句中的主语是不定代词时，谓语动词用单数形式
当主语从句中的主语是不定代词（如something, nothing, anyone等）时，谓语动词 用单数形式。
主语从句中的主语是表示数量的短语时，谓语动词用单数或…
主语从句与形式主语的区分
形式主语it代替真正的主语从句，使句子结构更加平衡。需注意形 式主语与真正主语的区分。
(完整版)主语从句详解+例句
(完整版)主语从句详解+例句主语从句是复合句中的一个重要成分，由一个从句作为主语，起到句子中主语的作用。
本文将详细介绍主语从句的结构和用法，并提供一些例句进行说明。
1. 主语从句的结构主语从句由引导词和一个从句组成，引导词在句子中充当主语的角色。
常见的引导词有：- that- whether/if- who- whom- which- what- whoever- whatever主语从句的结构可以是以下几种形式：- 陈述句形式：[that + 陈述句]- 一般疑问句形式：[whether/if + 陈述句]- 特殊疑问句形式：[疑问词 + 陈述句]2. 主语从句的用法- 主语从句可以替代主句中的名词或名词短语作为主语，使句子更加简洁明了。
例如：- That he is late is unacceptable.（他迟到是不能接受的。
）- What you said surprised me.（你说的话让我很吃惊。
）- 主语从句常用于强调句型中，强调句型的结构为：[It + 系动词 + 主语从句 + 其他成分]。
例如：- It is important that we take action now.（我们现在采取行动是很重要的。
）- It doesn't matter what they think.（他们怎么想并不重要。
）3. 主语从句的例句- That he didn't show up was disappointing.（他没有露面是令人失望的。
）- Whether she will join us is still unknown.（她是否会加入我们还不知道。
）- Who will be the winner is yet to be determined.（谁将会是胜利者还有待确定。
）- It is surprising that they didn't invite him.（他们没有邀请他是令人惊讶的。
什么是主语从句
s 什么是主语从句？主语从句（Subject Clause）是一个从句，用来作为主句中的主语。
主语从句用来说明主句中的动作或状态的主体或发出者。
主语从句通常由连词that引导，但在口语中通常可以省略。
主语从句与主句的关系是主谓关系，它们共同构成一个完整的句子。
下面是主语从句的一些常见用法：1. 陈述事实或真理：主语从句可以用来陈述一个事实或真理，说明主句中的动作或状态所涉及的内容。
- That he is late again is really frustrating.（主语从句陈述事实）- It is important that we take care of our environment.（主语从句陈述真理）2. 表达观点或看法：主语从句可以用来表达某人的观点、看法或意见，说明主句中的动作或状态所涉及的观点或看法。
- Whether we should go on a vacation is a matter of personal preference.（主语从句表达观点）- It is my belief that honesty is the best policy.（主语从句表达看法）3. 提出问题：主语从句可以用来提出一个问题，说明主句中的动作或状态所涉及的问题。
- How we can improve our communication skills is a topic worth discussing.（主语从句提出问题）- Whether she will attend the meeting is still uncertain.（主语从句提出问题）主语从句与主句之间是一种主谓关系，用来说明主句中的动作或状态的主体或发出者。
在使用主语从句时，我们需要注意连词的选择，通常使用that来引导主语从句。
通过练习和阅读，我们可以提高对主语从句的理解和运用能力，使我们的表达更加准确、流畅和自然。
主语从句
13. __A__ matters most in learning English is enough practice.(2007全国卷Ⅱ)
Eg：Howthis happenedis not clear to anyone.（这事怎样发生的，谁也不清楚）
Eg：whyhe did itremains a mystery.（他为什么做那件事依然是一个谜。）
重点1：有时为了考虑句子平衡，it做形式主语,而将主语从句放在句末（尤其是当谓语较短时）。这分三种情况：
类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.
11. __C___ book you borrow must be returned within a week.
A. What B. Which C. Whichever D. That’s
12. __C__ wants to stay in a hotel has to pay their own way. (浙江2008)
It must beproved that…必须指出……
类似的过去分词还有：known; expected; believed; estimated;thought; hoped; noted; discussed; required; decided; suggested,etc.
Eg：It isthoughtthathe is the best player.(大家都认为他是最好的选手。)
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
主语从句 （the Subject Clause ）
定义： 定义： 用作主语的从句叫主语从句， 用作主语的从句叫主语从句，它是名 词性从句之一。引导主语从句的连接词有： 词性从句之一。引导主语从句的连接词有： 连词that, whether；连接代词who, ；
what和which；连接副词when, where, ； how和why。 。
4)由连接副词when, where, how和why引起 由连接副词 的主语从句 Why he came late to class this morning was not clear. 我们什么时间开会还没决定下来。 我们什么时间开会还没决定下来。 When we shall have the meeting hasn’t been decided yet. How they went through all the difficulties is still a mystery today. Where she will go travelling hasn’t been decided at last.
不管是谁，只要犯错就得改正。 不管是谁，只要犯错就得改正。 Whoever makes mistakes must correct them. Who makes mistakes must correct them. (x)
Whichever color he will choose is his own decision. Which color he will choose is his own decision. (x)
4. It must be pointed out that...必须指出 必须指出… It has been proved that... 已证明 已证明… It has been proved that at least thousands of buildings were damaged or destroyed.
主语从句不难学习是显而易见的。 主语从句不难学习是显而易见的。 That the subject clause is not difficult to learn is very obvious. 但是这类句子在大多数情况下会放到整个句子 的后部去，而用代词 作形式主语 作形式主语。 的后部去，而用代词it作形式主语。
Language Structure
Noun Clause
subject clause
Revision: 宾语从句 在复合句中作主句的宾语。 在复合句中作主句的宾语。 引导词 可省略), 有连词that (可省略 whether, if; 代词 有连词 可省略 有who, whose,what ,which; 副词 when ,where, how, why 等。如:
2. It +Vi.+从句 从句
It seems/appears that... 似乎 似乎… It happens that... 碰巧… 碰巧 It doesn’t matter that… …是无关紧要的 是无关紧要的 It matters a lot that… …是至关重要的 是至关重要的 It occurs to sb that… / It strikes sb that 某人想到 某人想到…
注意下面一些常用重点句型: 注意下面一些常用重点句型
1. It be + adj. / n. +从句 从句
It is a pity/shame/ that... 遗憾的是… 遗憾的是 It is possible that... 很可能… 很可能 It is (un)likely that... (不)可能 可能… 可能 It is (un)fortunate that… (不)幸运的是 不 幸运的是 It is clear/ obvious/evident that… 显而易见的是
任何想要生存的人不能不依靠社会。 任何想要生存的人不能不依靠社会。 (independent) 主语从句+系动词 表语 主语从句 系动词+表语 系动词 be independent of …can not be independent of society whoever…
Whoever wants to exist can not be
我没有想到汤姆会被选为学生会主席。 没有想到汤姆会被选为学生会主席。 汤姆会被选为学生会主席 (occur） 02’ (occur） 02 上海 It + vi. + that… that… It never occurred to me that didn’t didn t occur elect sb./make sb. chairman /didn’t It never occurred /didn t occur to me that Tom would/should be elected/made students’ chairman of the students Union.
2) 由连接词whether引起的主语从句： 引起的主语从句：
Whether Tom will sell the house is not yet decided. 他们是否能去野餐取决于天气情况。 他们是否能去野餐取决于天气情况。 Whether they can go to have a picnic depends on the weather. Whether he will be chosen as monitor next time is in doubt.
据证实, 据证实 在地震中至少有上千座楼房遭到破坏或彻 底毁掉。 底毁掉。
It must be pointed out that the earth is becoming warmer and warmer.
5. It is important / natural / necessary / essential/ strange that...
from being polluted.
It is strange that he should come late to class.
Practice:
1. _____ you don’t like him is none of my That business. 2. _____ he said at the meeting astonished What everybody present. 3. ________ the 2020 Olympic Games will Whether be held in Shanghai is not known yet. 4. ________ we’ll go camping tomorrow Whether depends on the weather. 5. ________ leaves the room last ought to Whoever turn off the lights.
5) whatever, whoever, whichever引导主语从句 引导主语从句: Whatever has been said here must be kept secret.
凡是在这里说的话都得保守秘密。 凡是在这里说的话都得保守秘密。 cf. What has been said here should be kept secret.
用法： 用法：
1) 由连词 由连词that引起的主语从句： 引起的主语从句： 引起的主语从句
老师愿意帮助学生学习更多，这是十分自然的。 老师愿意帮助学生学习更多，这是十分自然的。
That the teacher offer to help students to learn more is quite natural.
主语从句应使用虚拟语气, 主语从句应使用虚拟语气 谓语动词用 的形式。 “should + 动词原形”的形式。 It is important that we students should learn all
subjects well. NhomakorabeaIt is essential that man should prevent the earth
Rewrite the following: 1. We believe (that) he is honest. That he is honest ___________________is believed by us. 2. I asked whether/ if they had a cheap suit. Whether they had a cheap suit _____________________ is my question. 3. I really don’t know what he is doing. What he is doing _________________ is not known to me. Note: 主语从句也是陈述句语序
3) 由what, which, who等连接代词引起的
主语从句： 主语从句：
What he has done is a good example.
老师今天说的话是十分正确的。 老师今天说的话是十分正确的。
What the teacher said today was quite right.
Who will go there remains a question. Which color she will choose is not known yet.
遗憾的是，他未能利用好他的业余时间。 遗憾的是，他未能利用好他的业余时间。 It is a pity/shame that he failed to make good use of spare time. 显然他是起床晚了所以才会上课迟到 他是起床晚了所以才会上课迟到。 显然他是起床晚了所以才会上课迟到。 It is clear/ obvious that he came late to class for his getting up late. 昨天在街上我碰巧看到那个大家都喜爱的歌手。 碰巧看到那个大家都喜爱的歌手 昨天在街上我碰巧看到那个大家都喜爱的歌手。 It happened that I saw the popular singer in the street yesterday. 至关重要的是你做了什么而不是你说了什么 你做了什么而不是你说了什么。 至关重要的是你做了什么而不是你说了什么。 It matters a lot what you have done but not what you have said.