4主语从句讲与练
英语句子成分和英语句子结构讲解及练习
英语句子成分和英语句子结构讲解及练习英语句子就像一座建筑，句子成分是构成这座建筑的各种材料，而句子结构则是建筑的框架。
理解句子成分和结构对于我们正确理解和运用英语至关重要。
接下来，让我们一起深入探讨。
一、英语句子成分1、主语主语是句子所描述的主体，通常是某人、某事或某物。
它是句子的核心，决定了句子要说的是谁或什么。
比如，“The dog is cute” （这只狗很可爱。
）中，“The dog”就是主语。
2、谓语谓语表示主语的动作或状态。
它通常由动词构成。
例如，“She sings beautifully” （她唱歌很好听。
）中的“sings”就是谓语。
3、宾语宾语是动作的对象，通常是接受动作的人或物。
比如，“He bought a book” （他买了一本书。
）中的“a book”就是宾语。
4、表语表语用于说明主语的特征、状态、身份等。
常见的系动词有 be （am/is/are）、seem、look 等，其后的成分就是表语。
例如，“She is happy” （她很开心。
）中的“happy”就是表语。
5、定语定语用来修饰、限定名词或代词。
它可以是形容词、名词、代词、数词、介词短语等。
例如，“The red car is mine” （那辆红色的车是我的。
）中的“red”就是定语。
6、状语状语用于修饰动词、形容词、副词或整个句子，表示时间、地点、原因、方式、程度等。
比如，“He runs fast” （他跑得很快。
）中的“fast”就是状语。
7、补语补语用于补充说明宾语或主语的情况。
例如，“We made him our monitor” （我们选他当班长。
）中的“our monitor”就是宾语补足语。
二、英语句子结构1、简单句简单句只有一个主谓结构，是最基本的句子类型。
例如，“I love you” （我爱你。
）2、并列句并列句由两个或两个以上的简单句通过并列连词（and, but, or 等）连接而成。
主语从句讲解及习题
名词性从句之主语从句一、名词性从句概述：在句子中起名词作用的各种从句统称为名词性从句。
根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从句。
二、主语从句定义：在句中起主语作用的从句称为主语从句。
引导主语从句的连接词主要有：单纯连词(that, whether/ if)、连接代词(what, whatever, who, whoever, whom, whose, which, whichever 等)和连接副词(when, where, why, how, whenever, wherever, however 等)。
1)that引导的主语从句(1)由连词that引导的主语从句:引导词that无含义/在句中不做成分/不可以省。
例如：That you will win the medal seems unlikely.你能得奖看起来不大可能。
That light travels in straight lines is known to all.众所周知，光沿直线传播。
That you don’t like him is none of my business.你不喜欢他不管我的事。
(2)形式主语it替代主语从句位于句首，that引导真正的主语从句会放到句子的后面。
常用的句式主要有如下几种：1.It+系动词+形容词+that从句。
如：It is necessary that … 有必要 .....It is clear that … 很清楚.....It is likely that … 很可能.....It is important that … 重要的是.....类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.例如：It was really astonishing that he refused to talk to you.It is essential that he should be here by the weekend.It seems obvious that we can not go on like this.It is necessary that you (should)master the computer.It is important that a student learn English well.It' s clear that they badly need help.It is likely that a hurricane will arrive soon.知识拓展：在“It is necessary / important/surprising/strange/unthinkable/unbelievable/incredible+that 从句”这类主语从句结构中，从句中谓语动词常用(should) +动词原形”，形式，即要用虚拟语气should 可省略。
主语从句超全讲解加练习
1〕从属连词：that，whether等.that 引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。
That he will win is certain.他肯定会赢。
Whether he’ll come here isn’t clear. 他是否会来这里还不清楚。
注意: 由that 引导的主语从句有时为了使句子结构平衡, 防止“头重脚轻”, 常用it 作形式主语, 而把从句放在后面。
例如:1. That he will refuse this piece of advice is impossible.2.That they should like each other is natural.这样就构成了下面一些常用句型:1) It is + n. +从句It is a pity/shame that... 遗憾的是……It is a surprise that…令人惊奇的是…It is a fact that… …是事实It is common knowledge that… …是常识______________(很遗憾)we lost the match._____________(这是事实)he cheated in the exam.2) It is + adj. +从句It’s certain that… 肯定…It is possible that... 很可能……It is unlikely that... 不可能……It is obvious that… 很明显…It is necessary \important \natural\... that…+(should) do________________(很可能)she will come back tomorrow.*_________________(很明显)this measure is effective.3) It +不及物动词+从句It happened that... 碰巧……It occurred to me that…我突然想起…_______________(刚好)I came into the office at that time.*____________________(我突然想起)I forget to sent the letter.4) It + be +过去分词+从句It is said that... 据说……It is known to all that... 众所周知……It is reported that... 据报道……It is believed that..人们相信/认为……It is suggested that + (should〕do... 建议……__________________(据报道)20 people were killed in the accident.*_______________(建议)we should eat more vegetable and do more exercise.2.连接代词who ，what ，which, whatever, whichever, whoever(Who, whom, which, what可以和ever构成合成词，和what一样引导从句，ever起到强调作用。
高中英语高考复习主语从句翻译练习(附参考答案和知识讲解)
高考英语主语从句翻译练习班级_考号姓名总分1.据估计，上海每年春节要接待几百万游客。
(It)2.还不知道是什么原因造成这次森林火灾。
(cause)3.你要一个人完成那项任务似乎很困难。
(seem)4.无论他为他的父母做什么，都会让他们很开心。
(top)5.据报道，很多大学生想毕业后自己创业。
(report)6.我突然想到我忘记通知他们考试的时间了。
(occur》7.这个课程的创新之处在于它很大程度上尊重了小学生的学习(What)8.据说每天喝适量的葡萄酒可以使人保持年轻。
(stay)9.他从没想到两家公司都会给他工作机会，但是他不知道该如何选择，因为它们都是行业内的翘楚。
(occur)10.随着社会竞争日益加剧,青年人掌握至少两门语言是十分必要的。
(It)11.将来过怎样的生活取决于你自己。
(be up to)12.这个游戏的独特之处在于它让孩子学会如何应对现实生活中的问题。
(What)13.建议该实验在低温下操作。
(suggest)14.任何能够采用新方法解决这道技术难题的人,都将受到奖赏。
(Whoever)15.让这所学校自豪的是超过90%的学生都被重点大学录取。
(What)16.人们普遍认为在公共场合大声说话是不文明行为,应该避免。
(It)17.我从未想到那些偏远山区的孩子们生活条件如此艰苦。
(occur)18.随着科技的发展，电脑是否会取代传统的教学方式成为了当下最热的话题之一。
(substitute)19.因为蓝色是天空和海洋的颜色,所以蓝色自然常和冷静,可靠和喜爱平静生活联系在一起。
(natural)20.但凡家境殷实的单身汉，必然想娶妻成家，这是举世公认的道理。
(It)附：参考答案1.It is estimated that Shanghai receives millions of visitors every Spring Festival.2.What caused the forest fire is still unknown.3.It seems very difficult that you are to complete the task alone.4.Whatever he does for his parents makes them feel on top of the world.5.It is reported that many college students want to start their own business after graduation.6.It suddenly occurred to me that I had forgotten to inform them of the time for the exam.7.What is original in this course is that it respects pupils， study habits to a great extent.8.It is said that drinking a proper amount of wine every day can help one to stay young.9.It never occurred to him that the two companies would both give him a job offer, but he didn，t know which to choose, because both of them belong to the top of the industry.10.It is necessary for the young to master at least two languages with the social competition getting increasingly fiercer11.It's up to you what kind of life you will lead in the future12.What makes this game peculiar lies in that it teaches kids how to handle the problems in real life.13.It is suggested that the experiment should be made under a low temperature.14.Whoever can adopt a new approach to solving the technical problem will/shall be awarded.15.What made the school proud was more than 90% of the students had been admitted to key universities.16.It is generally believed/ considered/ thought that talking loudly in public is uncivilized and should be avoided17.It never occurred to me that the living conditions of the children should be so hard in the remote mountainous areas18.With the advancement of technology, whether computers will substitute for traditional teaching means has become one of the hottest topics nowadays.19.Since blue is the colour of the sky and the sea, it is only natural that it should often be associated with calmness, reliability and preference for a peaceful life.20.It is a truth universally acknowledged that a single man in possession of a good fortune must be in want of a wife.附：知识讲解主语从句就是从句作句子主语,一般放在句首，即主句谓语动词之前。
高中英语主语从句教案
高中英语主语从句教案一、教学目标1. 让学生理解主语从句的概念和用法。
2. 培养学生正确运用主语从句进行句子构建的能力。
3. 提高学生英语思维和表达能力。
二、教学内容1. 主语从句的定义和结构。
2. 主语从句的引导词：that, whether, who, what, where, when, why, how等。
3. 主语从句在句子中的位置和作用。
4. 主语从句的时态和语态。
三、教学重点与难点1. 重点：主语从句的定义、结构和引导词。
2. 难点：主语从句的时态和语态的正确运用。
四、教学方法1. 采用实例讲解法，让学生通过具体例句理解主语从句的用法。
2. 采用练习法，让学生在实践中掌握主语从句的构建和运用。
3. 采用小组讨论法，培养学生合作学习和解决问题的能力。
五、教学过程1. 引入：通过一个谜语引发学生对主语从句的思考，激发学习兴趣。
2. 讲解：讲解主语从句的定义、结构和引导词，通过实例演示让学生理解。
3. 练习：设计一些练习题，让学生运用所学知识进行句子构建。
4. 拓展：讲解主语从句的时态和语态，让学生进一步掌握主语从句的用法。
5. 总结：对本节课的主要内容进行总结，强调重点和难点。
6. 作业：布置一些主语从句的练习题，让学生巩固所学知识。
六、教学评价1. 评价方式：课堂练习、小组讨论、课后作业。
2. 评价内容：主语从句的定义、结构、引导词及运用。
3. 评价标准：学生能正确理解主语从句的概念，熟练运用引导词构建句子，时态和语态运用准确。
七、教学反思1. 反思内容：教学方法、教学内容、学生反馈。
2. 反思过程：根据学生在课堂上的表现，及时调整教学方法，针对学生的薄弱环节进行重点讲解。
3. 改进措施：针对学生的掌握情况，调整教学进度和练习难度，提高教学效果。
八、教学拓展1. 拓展内容：主语从句与其他从句的区分，如宾语从句、定语从句等。
2. 拓展目的：帮助学生更好地理解和运用各种从句，提高句子构建能力。
主语从句教案
主语从句教案【教案】教学目标：1. 知识目标：了解主语从句的定义和用法，能正确使用主语从句构建句子。
2. 技能目标：能够根据语境判断主语从句的成立，并能够正确使用主语从句构建句子。
3. 情感目标：培养学生积极参与课堂讨论的意识，激发学生学习英语的兴趣。
教学重难点：1. 重点：主语从句的定义和用法。
2. 难点：从复杂的句子结构中找出主语从句。
教学准备：1. 教师准备课件、教案、录音机等教学工具。
2. 学生准备课本、笔记本等学习用具。
教学过程：Step 1: 导入新课（5分钟）1. 师生问好。
2. 教师通过图片、视频等展示不同句子的主语，并引导学生思考主语的作用和构成。
3. 引导学生总结主语的定义，并与学生一起列出几个例子。
Step 2: 规则讲解（10分钟）1. 教师介绍主语从句的定义和用法。
2. 教师通过示例句子解释主语从句的构建方法，并与学生一起分析句子结构。
3. 教师通过多个例子让学生掌握主语从句的构建要点，例如：主语从句一般由连接词（that, whether, if, who, whom, which, what, where, when, why等）引导，常常位于句首或句尾。
Step 3: 例句操练（10分钟）1. 教师呈现一些含有主语从句的例句，并以音频形式朗读。
2. 学生跟读例句，并找出主语从句的位置和引导词。
3. 学生用自己的话解释主语从句的作用和构建方法。
4. 教师对学生的答案进行点评和指导。
Step 4: 练习活动（15分钟）1. 教师提供一篇短文，并在短文中设置多个空格，要求学生使用主语从句填空。
2. 学生独立完成填空练习，并互相交换答案。
3. 教师核对答案，并对错误的地方进行解释和讲解。
4. 学生根据教师的解释和讲解对自己的答案进行修改。
Step 5: 拓展延伸（15分钟）1. 教师出示一些复杂句子，并要求学生根据语法知识和上课所学的内容分析句子结构，找出主语从句。
2. 学生分组讨论，互相交流分析结果，并提出自己的观点和解释。
主语从句表语从句学案和专项练习
Subject Clause and Predicative ClauseⅠ. 主语从句(Subject Clause)一定义：__________________________________________________.1. He is right .2. What he said is right .二.主语从句引导词1.主语从句的引导词与宾语从句一样。
〔但不用if 〔是否〕，只能用whether(是否)〕1) that 2) whether3) what , which ,who, whom, whose, whatever , whichever.....4) where , when , why, how, wherever, whenever .....5) how many , what color, how far等。
2. 引导主语从句的关联词除起连接句子的作用，绝大多数关联词在主从中要充当一定的句子成分。
3. 主语从句的语序是：关联词+S+V三. 主语从句引导词的用法:1. that 的用法：that 引导句意完整, 意义明确不缺成分的述句；无词义，在主从中不充当句子成分，不能省略。
仿照例子改写句子改成相应的主语从句Model: There is life on another planet (在另外的星球上)〔that 引导的主从〕 It is almost impossible.→That there is life on another planetis almost impossible(主从) s v.1). The scientist will give us a lecture ne*t week. It is true. →2). You don’t like him. It is none of my business.(不关我的事) →3).Her hair was turning gray(灰色). It worried her bit.→4). He told her everything. It is probable.→5). He sings so well. It is no surprise.→2. whether 的用法: whether引导的主从不缺句子成分，句意不完整，表达一种不确定，不明确的概念；whether当"是否"讲，在主从中不充当句子成分。
高中英语语法：四种名词性从句讲解与练习
名词性从句名词性从句相当于名词，可分别作主句的主语、表语、宾语和同位语。
因此，名词性从句可分为主语从句、表语从句、宾语从句和同位从句。
引导词：主语从句就是在复合句中用作主语的从句，引导主语从句的引导词主要有三类：一是that；二是whether；三是那些可以用作疑问词的词语，如what, who, which, when, where, how, why等（一）引导名词性从句的连接词1、连接代词：who, whose, whom, what, which。
有词义，在从句中担任成分，如主语、表语、宾语、或定语等。
2、连接副词：when, where, why, how。
有词义，在从句中担任成分，作状语。
3、连接词：that, whether, if, as if。
that 无词义，在从句中不担任成分，有时可省略；if (whether), as if虽有词义，但在从句中不担任成分。
注意：连接代词与连接副词在句中不再是疑问句，因而从句中谓语不用疑问式。
连接代词与连接副词在从句充当句子成分，连接词whether 和if（是否），as if（好象）在从句中不充当句子成分，只起连接作用。
根据句义，如果连接代词与连接副词，whether、if 和as if都用不上时，才用that作连接词（that本身无任何含义）。
一、主语从句与宾词从句连词、语序、时态相同。
只是不能用if, that 不可省；（一）、主语从句是一个句子，在句子中作主语成分。
（二），主语从句的特点1.与宾语从句使用同样的连接词，只是if 不能用；1）、陈述句用that。
2）、一般疑问句用whether。
3）、特殊疑问句用特殊疑问词what, which, who,when, where, why, how 等词引导。
2.经常隐身（以it为形式主语出现）。
例句：1.It's true that the earth is round.That the earth is round is true.2. 表是否的意思时，不能用if代替whether.It hasn't been decided whether he'll come or not.Whether he'll come or not hasn't been decided.3. 从句语序为主谓宾正常语序。
主语从句(精讲精练)
主语从句一．主语从句的结构：主语从句+ 谓语动词+ （宾语）+ 状语或其他That he failed the math exam surprised all of us.That you joined us made all of us happy.That he didn’t care for money was a lie.Whether we’ll go out for an outing depends on the weather.What he did added to our difficulty.What surprised everybody was that he didn’t come to the meeting.二、主语从句的词有从属连词、连接代词、连接副词。
从属连词：that，whether1.that 引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。
That he will win is certain.That the earth travels around the sun is a well-known fact.●注意: 由that 引导的主语从句有时为了使句子结构平衡, 避免“头重脚轻”, 常用it 作形式主语, 而把从句放在后面。
That he will win is certain.=It is certain that he will win.That the earth travels around the sun is a well-known fact.=it is a a well-known fact that the earth travels around the sun2.whether引导主语从句只起引导作用，在主语从句中不充当任何成分,意思为“是否”Whether he’ll come here isn’t clear. 他是否会来这里还不清楚。
高中英语语法主语从句
高中英语语法学习指导：主语从句讲与练 2004/03/31 08:51 英语辅导报高中英语语法学习指导：主语从句讲与练 2004/03/31 08:51 英语辅导报一、主语从句的概念与类型主语从句在复合句中作主句的主语,引导主语从句的词有从属连词that, whether以及连接代词who, what, which, whoever, whatever, whichever和连接副词when, where, why, how等.例如:That she was chosen made us very happy.她当选了使我们很高兴.What caused the accident is a complete mystery.是什么导致了这次事故还完全是一个谜.Whether she will come or not is still a question.她是否来还是一个问题.Which team will win the match is still unknown.哪个队会赢得这场比赛还不知道.Whoever comes to the party will receive a present.参加聚会的每一个人都将收到一份礼物.When they will start has not been decided yet.他们何时出发还没决定.注意:上述例句中的主语从句都是放在句首,但有时为了使句子结构平衡,避免"头重脚轻",常用it作形式主语,而把从句放在后面.例如:It is a pity that she has made such a mistake.她犯了这样一个错误,真是遗憾.It depends on the climate whether they are going shopping today.他们是否今天去购物还得看天气情况.这样就构成了下面一些常用句型:1)It is + adj. / n. +从句It is a pity/shame that...遗憾的是……It is possible that...很可能……It is unlikely that...不可能……2)It +不及物动词+从句It seems/appears that...似乎……It happened that...碰巧……3)It + be +过去分词+从句It is said that...据说……It is known to all that...众所周知……It is reported that...据报道……It is believed that...据信……;人们相信……It is suggested that...有人建议……It must be pointed out that...必须指出……It has been proved that...已证明…….例如:It is believed that at least a score of buildings were damaged or destroyed.据信,至少有二十座楼房遭到破坏或彻底毁掉.It is suggested that the meeting should be put off.有人建议会议延期召开.It's reported that three people were killed in the accident and five were hurt badly.据报道,事故中三人丧生,五人重伤.It is known to all that Taiwan is an inseparable part of China.众所周知,台湾是中国不可分割的一部分.[巩固练习]1. Does _______ matter if he can't finish the job on time?A. thisB. thatC. heD. it2. It worried her a bit _______ her hair was turning grey.A. whichB. thatC. ifD. for3. _______ is a fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. It二、学习主语从句应该注意的几个问题1)引导词that与whatwhat既有引导主语从句的作用,同时又在从句中作句子成分(主语、宾语、表语等).这时what相当于all that/everything that...,常译成"所……的(东西、事情、话等.)";而that只起连接作用,本身无实际意义,在从句中也不担当任何句子成分.但that引导的主语从句放在句首时,不能省略that.例如:What is done can't be undone. (谚语)已成定局,无可挽回.What we can't get seems better than what we have.我们得不到的东西似乎比已得到的要好.That we should work out a plan to deal with the present serious situation is important.我们应该制定一项计划来应付目前严峻的形势,这一点非常重要.That a new teacher will come to teach us geography is true.一位新老师将来教我们地理,这是真的.[巩固练习]4. _______ what they told me really true?A. HasB. IsC. DoesD. Have5. It matters little _______ a man dies, but _______ matters much is _______ he lives.A. how; what; howB. how; it; howC. why; it; whyD. that; what; that6. _______ she couldn't understand was _______ fewer and fewer students showed interest in her lessons.A. What; whyB. That; whatC. What; becauseD. Why; that7. It is pretty well understood _______ controls the flow of carbon dioxide in and out the atmosphere today.A. thatB. whenC. whatD. how8. _______ fashion differs from country to country may reflect the cultural differences from one aspect.A. WhatB. ThatC. ThisD. Which9. -What made her parents so angry?- _______ she had failed in the examination.A. AsB. BecauseC. SinceD. That2)引导词if和whetherif和whether引导动词后的宾语从句时一般可通用,但介词后的宾语从句、主语从句(放在句首时)、表语从句常由whether引导.例如:Whether she will go home or not is unknown.她是否回家还不得而知.Whether we shall raise ducks or geese remains to be decided.我们是养鸭还是养鹅仍没决定.=It remains to be decided whether/if we shall raise ducks or geese.但我们不能说If we shall raise ducks or geese remains to be decided.[巩固练习]10. _______ we'll go camping tomorrow depends on the weather.A. IfB. WhetherC. ThatD. Where3)其它引导词连接代词who, which, whom, whose有各自的意义,起连接作用,并在从句中充当语、宾语、表语、定语等;连接副词when,where, why, how等有各自的意义,起连接作用,并在从句中充当状语.[巩固练习]11. -Do you remember _______ he came?-Yes, I do. He came by car.A. howB. whenC. thatD. if12. It was a matter of _______ would take the position.A. whoB. whoseC. whomD. whomever13. -I drove to Zhuhai for the air show last week.-Is that _______ you had a few days off?A. whyB. whenC. whatD. where14. I read about it in some book or other, does it matter _______ it was?A. whereB. whatC. howD. which三、语气在It is necessary / natural / important / strange...+ that-clause这类句型里,that所引导的主语从句中谓语动词用"should +原形",表虚似语气.例如:It is necessary that the problem should be settled at once.这个问题必须马上解决.It's strange that he should have gone away without telling us.他竟然没向我们说一声就走了,真是奇怪.[巩固练习]15. It is necessary that a college student _______ at least a foreign language.A. mastersB. should masterC. masteredD. will master四、以it作形式主语的主语从句与强调句型的区别"It be + adj./n. + that-clause"与强调句型均有It be...that...之类的语言标志,但不同的是:①前者中的that从句是主语从句.若删掉其中的It be和that,则剩余部分不论结构还是语意都不能成为一个句子;但若将后者中的It be和that去掉,则剩余部分的结构和语意仍能构成一个完整的句子.②强调句型译为汉语时可加上"正是……"或"就是……"之类的字眼,而主语从句则不可以.请比较下面两个句子:It is surprising that Mary should have won first place.令人惊奇的是玛莉竟然获得了第一名.It is Mary that has won first place.正是玛莉得了第一名.第一句话中的It是形式主语,that引导的是主语从句.句中的It is和that无法删除,一旦删除句子就不成立.第二句是强调句型,其中的It is和that可以去掉,因为没有It is和that句子仍然很通顺.Key: 1-5 DBDBA 6-10 ACBDB 11-15 AAADB(文/李来生《英语通》高二版2004年第2期；版权归英语辅导报社所有，独家网络合作伙伴新浪教育，未经许可，不得以任何形式进行转载。
高中英语从句精讲与练习(附答案)
高中英语从句讲解与练习（1）表语从句1．定义：用作表语的从句叫做表语从句。
2．引导表语从句的关联词的种类：(1) 从属连词that。
在从句中不做成分。
如：The trouble is that I have lost his address.麻烦是我把他的地址丢了。
The reason was that he was late for school.(2) 从属连词whether,as,as if。
如：1.He looked just as he had looked ten years before.他看起来还与十年前一样。
2.The question is whether they will be able to help us. 问题是他们是否能帮我们。
注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如：All this was over twenty years ago, but it’s as if it was only yesterday.这都是20多年前的事了，但宛如昨天一样。
The key is whether we can solve the problem.//It looked as if it was going to rain.注：能跟表语从句的谓语动词一般为系动词be, seem, look，sound等。
如：He looked just as he had looked ten years before. 他看起来还与十年前一样。
It sounds as if someone is knocking at the door.连接代词who, whom, whose, what, which, whoever, whatever, whichever 在表语从句中做主语、宾语等。
如：The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。
主语从句 讲解与练习
C.It+be+过去分词 (said, reported, thought, expected, announced, arranged, etc.) +that从句 It is said that Mr. Green has arrived in Beijing.
D.It+(seems, happens, appears等不及物动词及短 语)+that从句 It happened that I was out that day. It seems that she is not in a good mood.
E.It+(doesn’t matter, makes no difference,etc)+ 连接代词或连接副词引导的 主语从句 It doesn’t matter whether she will come or not.
ቤተ መጻሕፍቲ ባይዱ
主语从句与强调句的区别
1). 在主语从句中，把It be … that 去掉之后，句子成分不完整；在 强调句中，则是个完整的句子； 2). 主语从句多种引导词；强调句 的引导词只有：that, who。
What you said is of great importance. How he was successful is still a puzzle.
3.主语从句置于句首时，必 须由连接词引导，不能省略 这些连接词；但是如果用it 作形式主语，主语从句后置 时，则从属连词that可以省 略。 That he is a hero is known by everyone.
Subject Clauses 主语从句
A tree has fallen across the road.
主语从句讲解和练习题
高考英语主语从句定义：用作主语的从句叫主语从句，它是名词性从句之一。
主语从句的时态：不受主句的时态影响和限制。
引导主语从句的连接词有：从属连词: that, whether；连接代词: who (whoever), whom, whose, what (whatever)和which (whichever)；连接副词: when, where, how和why。
连接词：1. 从属连词：that，whether1）that引导主语从句只起引导作用，在主语从句中不充当任何成分，that本身无实际意义，但不能省略。
2）whether意为“是否”，放在句首句末皆可。
由whether引导的名词从句做主语，表语，介词宾语，同位语时！不可用if代替。
a.That price will go up is certain.b. Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
2. 连接代词who ，what ，which, whatever, whichever, whoever (Who, whom, which, what 可以和ever构成合成词，和what一样引导从句，ever起到强调作用。
此类主语从句不能用形式主语it引导，它们在句子中担任成分，不能省略，语序为陈述语序，既有疑问含义,又起连接作用,同时在从句中充当各种成分。
Which side will win is not clear. Whoever breaks the law will be punished.Whatever he did is right. Who killed the scientist remains a question.1）What和that引导的主语从句的区别：that 只起引导作用，不充当任何成分，没有意思。
What 不仅起引导作用，还要充当一定成分(主语、宾语或表语)，意思是：“什么”。
主语从句翻译讲解及练习
tomorrow depends on the weather. 她干了什么尚不清楚。 What she has done is not clear. 她去了哪儿，还不知道。 Where she has gone is not known.
句子翻译练习
你需要的是更多的练习。 What you need is more practice. 他是否加入我们，没有太大的差别。 It doesn’t make any difference whether they join us
or not. 很明显他已经尽力而为了。 That he has done his best is obvious. 他们什么时候来还不知道。 When they will come is still not known.
It is believed that…
人们相信……
It is known to all that…
从所周知……
It has been decided that… 已决定……
形式主语句
c.
It + be +名词+ that-从句
It is common knowledge that… ……是常识
句型二：Whether + 完整句=名词
Whether you can succeed in making your dream come true depends on hard work more than luck.
Whether computer can replace the role of teachers has long been a hot topic.
主语从句知识点总结框架
主语从句知识点总结框架一、主语从句的概念主语从句是指在一个复合句中作为主语的名词性从句。
主语从句一般由关联词引导，如that,whether,what,who,whom,which等等。
二、主语从句的特点1. 位置：主语从句一般位于主句的谓语动词之后，但有时也可以位于谓语动词之前。
2. 谓语动词的形式：谓语动词的形式由主语从句的先行词来决定。
三、主语从句的引导词1. that引导主语从句2. whether引导主语从句3. what引导主语从句4. who引导主语从句5. whom引导主语从句6. which引导主语从句四、主语从句的使用1. 主语从句常用于描述客观事实、真理、普遍规律以及理论性问题。
2. 主语从句也可以用来表达一些模糊的意义或不确定的语境。
3. 主语从句在日常生活中的应用非常普遍，是一个重要的语法知识点。
五、主语从句的注意事项1. 主语从句与主句的谓语动词一定要保持一致。
2. 在使用主语从句时，需要注意它与其他成分的搭配和语境的逻辑关系。
3. 避免重复使用主语从句，可以使用it代替主语从句来避免重复。
六、主语从句的练习1. 例句1：It's important that we finish the project on time.2. 例句2：The problem is whether we should choose option A or option B.3. 例句3：What you said is true.七、主语从句的扩展应用1. 在口语交际中，主语从句也有着广泛的应用，常见于日常生活中的对话、演讲、辩论等场合。
2. 在文章或书面语言中，主语从句也经常出现，可以增加语言的表达力和语言的多样性。
八、主语从句的语法分析1. 主语从句的关联词通常是连接主语从句与主句的桥梁，连接关系密切。
2. 主语从句中的谓语动词形式由其先行词来决定。
九、主语从句的应用技巧1. 在使用主语从句时，要注意与主句的谓语动词保持一致。
主语从句详解及练习_附答案
高二年级语法要点剖析（李翌洋）一、名词性从句主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。
因此，这四种从句通称为名词性从句。
引导名词性从句的连接词可分为三类：连接词：that, whether, if （不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which.连接副词：when, where, how, why1. 主语从句作句子主语的从句叫主语从句。
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：（1）What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。
注意：有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。
主语从句后的谓语动词一般用单数形式。
常用句型如下：（1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句（3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：It is necessary (important, natural, strange, etc.) that …It is a pity (a shame, no wonder, etc.) that…It is suggested (requested, proposed, desired, etc.) that…2. 宾语从句名词句用作宾语的从句叫宾语从句。
名词性从句重点语法讲解及专项练习习题
名词性从句讲解主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。
因此，这四种从句通称为名词性从句。
引导名词性从句的连接词可分为三类：连接词：that, whether, if （不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which.连接副词：when, where, how, why考点：1. 考查名词性从句的语序问题2. 考查引导词that与what的区别3. 考查it在名词性从句中作形式主语或形式宾语的用法4. 考查whether与if的区别5. 考查名词性从句的虚拟语气问题语法要点剖析：1. 主语从句作句子主语的从句叫主语从句。
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：That he is the best student in the class is obvious.What he wants to tell us is not clear.Where the English evening will be held has not yet been announced.☆有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。
主语从句后的谓语动词一般用单数形式。
常用句型如下：（1）It + be + 名词+ that从句（2）It + be + 形容词+ that从句（3）It + be + 动词的过去分词+ that从句（4）It + 不及物动词+ that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：It is necessary (important, natural, strange, etc.) that …It is a pity (a shame, no wonder, etc.) that…It is suggested (requested, proposed, desired, etc.) that…It appears that…（似乎……）It happens that…（碰巧……）练习：It worried her a bit ____ her hair was turning grey.A. whileB. thatC. ifD. for2. 宾语从句名词句用作宾语的从句叫宾语从句。
主语从句讲解和练习题
主语从句讲解和练习题公司内部编号：（GOOD-TMMT-MMUT-UUPTY-UUYY-DTTI-高考英语主语从句定义：用作主语的从句叫主语从句，它是名词性从句之一。
主语从句的时态：不受主句的时态影响和限制。
引导主语从句的连接词有：从属连词: that, whether；连接代词: who (whoever), whom, whose, what (whatever)和which (whichever)；连接副词: when, where, how和why。
连接词：1. 从属连词：that， whether1）that引导主语从句只起引导作用，在主语从句中不充当任何成分，that本身无实际意义，但不能省略。
2）whether意为“是否”，放在句首句末皆可。
由whether引导的名词从句做主语，表语，介词宾语，同位语时！不可用if代替。
price will go up is certain.b. Whether they would support us was a problem. 他们是否会支持我们还是一个问题。
2. 连接代词who ，what ，which, whatever, whichever, whoever (Who, whom, which, what可以和ever构成合成词，和what一样引导从句，ever起到强调作用。
此类主语从句不能用形式主语it引导，它们在句子中担任成分，不能省略，语序为陈述语序，既有疑问含义,又起连接作用,同时在从句中充当各种成分。
Which side will win is not clear. Whoever breaks the law will be punished.Whatever he did is right. Who killed the scientist remains a question. 1）What和that引导的主语从句的区别：that 只起引导作用，不充当任何成分，没有意思。
高中从句练习题及讲解
高中从句练习题及讲解
1. 题目：请用定语从句描述你最喜欢的季节。
答案：我最喜欢的季节是春天，春天是万物复苏，鲜花盛开的季节。
2. 题目：使用宾语从句写一个关于你梦想的句子。
答案：我梦想有一天能够环游世界，见识不同的文化和风景。
3. 题目：用状语从句描述你早晨起床后的活动。
答案：早晨起床后，我总是先喝一杯温水，然后开始我的晨练。
4. 题目：使用主语从句写一个关于学习的重要性的句子。
答案：学习新知识是提高个人能力的重要途径，这对我来说是不言
而喻的。
5. 题目：用同位语从句描述你的朋友。
答案：我的朋友，一个热情开朗的人，总是能在困难时刻给我鼓励。
6. 题目：使用条件状语从句表达对未来的期望。
答案：如果我能够努力学习，我相信我将来会成为一名优秀的科学家。
7. 题目：用虚拟语气的从句写一个关于过去的假设。
答案：如果我去年没有参加那个夏令营，我就不会认识那么多有趣
的人。
8. 题目：使用让步状语从句描述一个不变的事实。
答案：尽管天气很冷，但我还是坚持每天早晨跑步。
9. 题目：用强调句型写一个关于友谊的句子。
答案：正是那些困难时刻，让我意识到了朋友的重要性。
10. 题目：使用原因状语从句解释为什么你选择学习这门课程。
答案：我选择学习这门课程是因为我对这门学科充满了浓厚的兴趣。
这些练习题覆盖了从句的多种类型，包括定语从句、宾语从句、状语从句、主语从句、同位语从句、条件状语从句、虚拟语气、让步状语从句、强调句型和原因状语从句。
通过这些练习，可以帮助学生更好地理解和运用英语中的从句结构。
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第四讲主语从句讲与练一、主语从句的概念与类型主语从句在复合句中作主句的主语.例如:That she was chosen made us very happy.她当选了使我们很高兴.What caused the accident is a complete mystery.什么导致了事故还完全是个谜. Whether she will come or not is still a question.她是否来还是一个问题.Which team will win the match is still unknown.哪个队会赢得这场比赛还不知道. Whoever comes to the party will receive a present.参加聚会的人都将收到一份礼物. When they will start has not been decided yet.他们何时出发还没决定.二、引导主语从句的连接词有：1,从属连词：that，whether；2,连接代词：who, whose, whom, which, what, whoever, whomever, whichever, whatever等；3,连接副词：when，where，how，why及whenever,wherever,however等。
1）从属连词：thatThat she left him made him sad.That he will come is certain.特点：Eg: ______ you don’t like him is none of my business.A. WhatB. WhoC. ThatD.Which注：that从句作主语时，常用it作形式主语，常见的句型有四种：1. It + be + 名词/名词词组＋that从句It is common knowledge that… …是常识It is a surprise that …. 令人惊奇的是…It is a fact that…… 事实是……2. It + be + 形容词＋that从句It is necessary that… 有必要…It is important that …. 重要的是…It is obvious that…… 很明显……3. It + be + 过去分词＋that从句It is believed that… 人们相信…It is known to us/all that …. 众所周知…It has been decided that……已经决定……4. It + 不及物动词＋that从句It appears that… 似乎…It happens that …. 碰巧…It occurred to me that…… 我突然想起改写：1.That we shall be late is certain.--2. That the earth is round is known to all.--3. That you missed the chance is a pity.--____ is reported that 3 college students died in the Yangtze River in order to save two boys.A.ItB.AsC.ThatD.What链接虚拟语气1.在It + be+suggested/advised/ordered/requested/ insisted/required 中, that从句的谓语也应该用“should + 动词原形\”的形式, should可以省略。
2.用于It is important / natural / necessary /strange/ impossible that...句型中, 主语从句应使用虚拟语气, 谓语动词用“should + 动词原形”的形式, should可以省略。
It is advised that the meeting _____(2005江西）A. delayB. be delayedC. delaysD. should delayIt is strange that he _______so.（2008江西）A. thinksB. thinkC. thoughtD. will think2）whether引导的主语从句Whether he likes it is still a question.Whether I will pass the exam is hard to say.Whether we will go to the park depends on the weather.特点:______we will go camping tomorrow depends on the weatherA. IfB. WhetherC. ThatD. Where3）用连接代词引导的主语从句(在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分).例如：What you need is more practice.你所需要的是更多的训练。
What I want to know is this. 我想知道的就是这事。
Whatever we do is to serve the people.我们无论做什么都是为人民服务。
______ we can’t get seems better than_____ we have.A. What; thatB. What; whatC. That; thatD. That; what______ has helped to saved the girl is worth praising.(2004全国）A. WhoB. The oneC. AnyoneD. Whoever 4）用连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句中作状语。
)eg:Where we should leave it is a problem.When they will come hasn’t been made pubic.他们什么时候来还不知道。
Eg:______ he was late for school again puzzled me.A. WhereB. WhenC. WhatD. Why_____and _____the 30th Olympic Games will be held is known to us all.A. What; whereB. When; whereC. that ;whetherD. Why; that思考的问题：1、如何区分what 和that2、如何区分what和whatever，who和whoever3、如何区分whatever和however4如何区分that和whether三．选择题：1. _____ as much as one-fifth of all timber harvested is not used.A. The estimateB. The estimateC. They are estimatedD. It is estimated that2. _____ some mammals came to live in the sea is not known.A. WhichB. SinceC. AlthoughD. How3. _____ we have achieved is attributed to the guidance of our parents.A. WhoeverB. WhateverC. HoweverD. That4. _____ wealthy does not necessarily mean that a man is greedy.A. For the reason that he isB. Just because he isC. The reason of beingD. That he is5. Although _____ happened in this developed country sounds like science fiction, it could occur elsewhere in the world.A. whichB. whatC. howD. it6. _____ she had forgotten to take her notebook.A. That occurred to herB. She occurred thatC. To her that occurredD. It occurred to her that7. I am sure that _____ she said is wrong.A. whichB. allC. thisD. what8. We lost our way in the forest, and _____ made matters worse was that it was getting dark.A. thatB. whichC. itD. what9. _____ some mammals came to live in the sea is not known.A. WhichB. SinceC. AlthoughD. How10. _____ or not is still uncertain.A. He’s comingB. If he is comingC. That comingD. Whether he’s coming11. It’s _____ he’ll be able to come.A. doubt whetherB. doubtfulC. doubt itD. doubtful whether12. _____ he is at work in the heart of the big city or at home in the quiet suburb, Dick’s life is tied to machines.A. WhetherB. TillC. IfD. Unless13. _____ he saw both surprised and frightened him.A. ThatB. WhenC. WhatD. Which14. _____ is a spell of warm sunshine.A. What do we all need.B. What all we needC. What we needD. What we all need15. _____ is a pity that he should feel so upset.A. WhatB. ThatC. HeD. It16. _____ a spoonful of soil can tell us so much about the structure and early history of the moon.A. RemarkableB. Quite remarkablyC. It is remarkable thatD. It is remarkable fact that17. _____ you nominate will be elected.A. WhoB. WhomC. WhomeverD. That’s18. _____ book you borrow must be returned within a week.A. WhatB. WhichC. WhicheverD. That’s19. _____ of us gets home first starts cooking.A. WhoB. WhichC. WhicheverD. Anyone20. _____orders he gives are obeyed.A. WhicheverB. WhichC. WhateverD. What四、主语从句在写作中：假定你是李华，自制一些中国结（Chinese knot）。