名词性从句的主语从句
3. That What the professor said is of great importance.
that引导主语从句时无词义。What the professor said表示“教授所说的”。
主语从句常见错误 下列各句均有一处错误，请改正并分析原因。
1. Light travels faster than sound is common knowledge.
That that虽无词义但引导主语从句位于
2. Whether If she’s coming or not doesn’t matter much.
请你归纳 ？
为了使句子保持平衡，常用 it ______ 来代替主语从句，而把主语 后面 ，尤其是连词 that 从句放到 ______ 引导的主语从句常用于此种句式中。
常用句型如下： It+ be +名词+ that 从句 It+ be + 形容词+ that从句 It+ be + 动词的过去分词+ that从句 It+ be + 不及物动词+ that从句
(4)._________ we can protect the How grain needs to be discussed. How many (5). ___________people died from starvation that year will never be known. often (6).How __________he’ll go to see his grandmother depends on the time he can spare.
2) 连接代词: who, whom, whose, what, which, whoever, whatever, whichever等。
(1).It is clear who is afraid of having a change in land ownership. Whose bag it is can not be (2)._________ told. What (3).__________ India needs is a law to make land ownership fairer.Leabharlann 1： That What
二. 用适当引导词填空，使下列主语从 句意思和结构完整。 1. _______ That he finished writing the composition in such a short time surprised us all. Whether / Where we will go for an 2. _______________ outing tomorrow remains unknown. 3. It is a pity ______ that we won’t be able to go to the south to spend our summer holidays.
1. It’s likely/possible/important/necessary/clear that… 很可能/重要的是…/必要的是…/很清楚…
2. It’s known/reported/ thought/said that…据说/据报 道… 3. It seems/appears/happens that…显然、明显、 碰巧.. 4. It’s been announced/declared that… 已经通知/宣布… 5. It’s no wonder that…并不奇怪/无疑… 6. It’s a pity/a fact /a common knowledge (众所周知） / a common saying（俗话说）that…
6. When and where the meeting will be held still remain remain a question.
主语从句表示单一概念时，谓语要用 单数形式。
一、改错
she wants to know is which dress she should buy. 2: He That he will give up his job surprises all of us. 3:NoWhoever matter who breaks the law will be punished. Whether 4:If the meeting will be held in our school is not known yet. 5: That worried her a bit was that he What couldn’t get in touch with her friend. 6: It He is said that he has gone to America.
请观察下列句子, 注意主语从句的特点。
1. That the earth travels round the sun is a wellknown fact. 2. whether the artist can do it or not is uncertain. 3. Who will act the lead in the play has not been decided yet. 4. Where the young man has gone is not known. 5. When and where the test will be given is not yet decided.
3) 连接副词: when, where, why, how, how many, how much ,how long, how soon, how often When (1). _________we’ll start tomorrow will be told soon. Where (2). __________we can buy oxen is something we need to find out. (3)._____________he came here is not How / When known.
8. _____ Who was responsible for the accident is not yet clear. 9. ____________________ When/Where/Whether they will have the sports meet is still a question. 10. It doesn’t matter ______ what she looks like.
归纳总结：
主语从句引导词的选择主要是根据从 句的结构和意义来选择： 1.如果从句的意义和结构完整，则用 that。 2.如果从句的意义和结构不完整，则 根据从句的意义和结构选择相应的引 导词。
完成下面主语从句
Whether the meeting will be held on time is 1. _______ not known yet. 2. ________ Whoever leaves the room last ought to turn off the light. That 3. ________ he has become a rich man is known to all in our town. What 4. ________ I need is more time. Whether/Where we will go for an outing 5. _______________ tomorrow remains unknown.
4. Where will the trees be planted has not been decided.
将will置于trees之后。主语从句要 用陈述句语序。
5. No Whoever matter who breaks the rule will be punished.
引导让步状语从句时二者可互换，但引 导名词性从句时只能用whoever。
主语从句引导词的选择
1).连接词: that, whether That he will win is certain. 例:(1)._______ that (2).It has been reported ______sales of beef in China will increase. Whether we shall raise ducks or (3).________ geese remains to be decided. (4).__________ Whether he ’ll join us in the discussion is of great importance.
that 和what 的选用
that 和 what 都可引导主语从句。 但是，what除起连接作用外，还在主语 从句中充当成分，可做从句的主 语、宾语、或表语。而that在主语从 句中不充当任何成分，只起连接作用。
翻译和分析下列句子
1. It is well reported that a storm is coming. 2. It is true that the earth moves around the sun. 3. It is a pity that I missed the train. 4. It doesn’t matter whether he will come or not. 5. It seems that it is going to rain. 6. It happened that they didn’t know my address.
名词性从句与主语从句
名词性从句与主语从句在英语语法中，名词性从句和主语从句是重要的从句类型。
它们都属于从属从句，扮演着整个句子的一个成分。
本文将详细介绍名词性从句和主语从句的定义、特点和用法，并举例说明其在实际应用中的运用。
一、名词性从句的定义和特点1. 定义：名词性从句是指在复合句中充当名词成分的从句。
它可以充当主语、宾语、表语和同位语等。
2. 特点：a. 通常由连词that, whether/if, who, whom, which, what, when, where, why, how等引导；b. 在从句中担任名词的职能，整个从句作为整体在句中起到名词的作用；c. 可以替换为一个单词或短语，使句子更加简洁明了；d. 名词性从句的引导词根据从句所充当的成分来选择。
二、名词性从句的用法名词性从句的常见用法包括主语从句、宾语从句、表语从句和同位语从句。
下面将分别进行讲解。
1. 主语从句主语从句在句子中充当主语的角色，常以that, whether/if, who, whom, which, what, when, where, why, how等引导。
例如： - Whether we can finish the project on time is still uncertain.- That he stole the money is beyond doubt.- How to solve this problem remains a challenge.2. 宾语从句宾语从句在句子中充当宾语的角色，常以that, whether/if, who, whom, which, what, when, where, why, how等引导。
例如： - She asked me where I had been all day.- I don't know if he will come to the party.- We should consider whether this plan is feasible.3. 表语从句表语从句在句子中充当表语的角色，常以that, whether/if, who, whom, which, what, when, where, why, how等引导。
名词性从句的种类与作用
名词性从句的种类与作用名词性从句是指在句子中充当名词的句子成分，它能够承担名词所具有的各种功能，如主语、宾语、表语、同位语等。
名词性从句的使用可以使句子更加丰富，表达更加准确。
本文将介绍名词性从句的种类及其作用。
一、主语从句主语从句是名词性从句的一种常见形式，它在句子中充当主语的角色，起到句子的主题和核心的作用。
主语从句通常以“that”或“whether”引导。
例如：1. That he is a talented musician is well known to everyone.2. Whether she will come to the party is still uncertain.主语从句常常用于强调句和形式主语的表达中，使句子更加生动有力。
二、宾语从句宾语从句作为动词的宾语出现，可以回答“what”、“where”、“which”、“who”等疑问词引导的问题。
它常见于及物动词后，也可用于介词后。
例如：1. She asked me what I wanted for dinner.2. He told me where he had been yesterday.宾语从句的作用是充当动词的宾语，使句子更加完整，表达更加准确。
三、表语从句表语从句用来修饰名词或代词，充当表语的角色，常以“that”或“whether”引导。
表语从句通常出现在“be”动词后或感官动词后。
例如：1. The question is whether we should go or stay.2. His wish is that he could travel around the world.表语从句可以在句中起到进一步解释、说明或补充的作用，使句子更加丰富多样。
四、同位语从句同位语从句指的是对名词或代词进行解释、说明或补充的句子，常见于名词后面，起到进一步解释名词的作用。
同位语从句通常以“that”引导。
名词性从句专项---主语从句,宾语从句,表语从句,同位语从句
名词性从句专项一、知识梳理/提炼要点一：句子的分类根据句子的结构可分为：①简单句——一主一谓。
②并列句——由等立连词and, but, so, for把两个（以上）的简单句连在一起构成。
③复合句——一个主句+从句（一个或以上）构成。
根据从句在复合句中的作用，分为名词性从句、定语从句和状语从句。
名词性从句包括主语从句、表语从句、宾语从句、同位语从句。
要点二：名词性从句总述1. 主语从句——在句中作主语，可用it作形式主语，把真正的从句放在句尾。
如：It is still a mystery how the prisoner escaped.犯人是如何逃跑的是个谜。
主语从句中，谓语动词一般用单数。
What引导的主语从句，可根据表语决定。
如：What he needs is that book?What he needs are some book?主语从句常用的结构有：It is well known/reported/thought/said/… that…It is natural/surprising/necessary/certain/true/clear… that…It is a pity/a shame/an honor/no surprise/no wonder… that…It doesn’t’t matter whether…It seems\appears that…It happens that…2. 表语从句——位于系动词之后充当复合句的表语，引导词that 一般可以省略，还可用as if/as though/because/why引导。
如：The question is who can complete the difficult task.问题是是能完成这项艰巨的任务。
３．同位语从句——跟在名词后面，进一步说明该名词的具体内容。
名词主要有：fact, news （word）, promise, idea, truth, thought, suggestion, hope, proposal, doubt等。
名词性从句-主语从句
主语从句的构成
主语从句的构成包括引导词和陈述句两部分。引导词是主语从句的开头，陈述句则是主语从句的具体 内容。
例如：“That he will come is certain.”这个句子中，“that”是引导词，“he will come”是陈述 句，合起来构成了主语从句“that he will come”。
特殊情况下的语序变化
在某些特殊情况下，如强调或倒装句中，主语从句的语 序可能会发生变化。例如，“It is he who is responsible for the accident.”（是他负责这起事故。）
主语从句的省略
省略条件
主语从句在某些情况下可以省略，通常是在从句内容与主句内容重复或从句内容不重要的情况下。
THANKS
感谢观看
名词性从句-主语从 句
目录
• 主语从句的定义 • 主语从句的引导词 • 主语从句的句型结构 • 主语从句的用法 • 主语从句的注意事项
01
主语从句的定义
什么是主语从句
主语从句是名词性从句的一种，在句子中充当主语成分，表示句子中的主要内容。 主语从句通常由一个连词引导，如that、whether等，后面跟随一个完整的句子。
引导词who
总结词
表示人或身份
详细描述
who作为主语从句的引导词，通常表示人或身份，在句子中起到连接主语和谓语的作用。例如，“Who will win the game is still unknown.”（谁将赢得比赛仍然未知。）
引导词which
总结词
表示选择或范围
详细描述
which作为主语从句的引导词，通常表示选择或范围，在句子中起到连接主语和 谓语的作用。例如，“Which team will win the game is still unknown.” （哪个队将赢得比赛仍然未知。）
名词性从句和主语从句的区别
名词性从句和主语从句的区别名词性从句和主语从句是英语语法中两个重要的从句类型，它们在使用和功能上有着一些区别。
本文将对名词性从句和主语从句的区别进行详细介绍。
一、名词性从句的定义和功能名词性从句是在句子中充当名词的作用，可以作为主语、宾语、表语或同位语。
名词性从句通常由连接代词（如what, who, whom, which, whoever, whatever）或连接副词（如when, where, why, how）引导。
名词性从句在句子中的功能类似于名词，用于表达陈述、提问、建议、愿望、要求、目的、理由等。
二、主语从句的定义和功能主语从句作为句子的主语，从句中的谓语动词所表示的是主句中的主谓关系。
主语从句通常由连接代词（如what, who, whom, which, whoever, whatever）或连接副词（如when, where, why, how）引导。
主语从句在句子中的功能是充当整个句子的主语，用于表达主谓关系，而且不能省略。
三、名词性从句和主语从句的区别1.位置不同：- 名词性从句可以出现在句子的主语、宾语、表语和同位语等位置，位置较为灵活。
- 主语从句只能作为句子的主语出现，位置不可变。
2.引导词不同：- 名词性从句常由连接代词或连接副词引导。
- 主语从句也常由连接代词或连接副词引导，但通常只由连接代词引导。
3.结构不同：- 名词性从句在结构上是完整的句子，包含主语、谓语和其他成分。
- 主语从句在结构上只包含主语部分，谓语动词在主句中。
4.可替换性不同：- 名词性从句可以被代替为一个单词或一个词组。
- 主语从句在句子中起到主语的作用，不能被代替。
四、名词性从句和主语从句的例句说明1. 名词性从句的例句：- I don't know what he said.（主语从句作宾语）- Tell me where she lives.（主语从句作宾语）2. 主语从句的例句：- What he said is interesting.（名词性从句作主语）- Where she lives is a mystery.（名词性从句作主语）综上所述，名词性从句和主语从句在使用和功能上存在区别。
名词性从句主语从句
主语从句 （Noun Clauses as the Subject）
定义：用作主语的从句叫主语从句，它是 名词性从句之一。引导主语从句的从属连词 有：that, whether；连接代词who, what和 which；连接副词when, where, how和why。
Part four
Rules
例1.When will he come is not known. 正：When he will come is not known.
规律一、主语从句一律用陈述语 序, 即主语在前，谓语在后。
例2. He will not come to the meeting this evening is true.
12
1. _W__h_e_n she will be back is still a question. 2. W__h_a_t_ you told me just now was really a surprise. 3. _W__h_e_re we will hold the basketball game
_I_t_o_c_c_u_r_re_d__t_o_m__e_t_h_a_t_(我突然想起)I forgot to send 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...据相信……;人们相信…… It is suggested that + (should）do... 建议……
名词性从句和主语从句的差异
名词性从句和主语从句的差异名词性从句和主语从句是英语语法中常见的两种从句结构。
尽管它们在句法结构上有一些相似之处，但它们在语法功能和用法上存在显著差异。
本文将详细介绍名词性从句和主语从句的差异，以及它们在句子中的应用。
1. 名词性从句名词性从句是一个完整的句子，其在句子中担任名词的功能。
名词性从句可以充当主语、宾语、表语或同位语。
它通常由连接词引导，如what、where、when、who、which、whether等。
名词性从句通常以陈述句的形式出现，例如：- What she said is true.（她所说的是真的。
）（名词性从句作为主语）- I don't know where he went.（我不知道他去了哪里。
）（名词性从句作为宾语）- His question is whether she will come or not.（他的问题是她是否会来。
）（名词性从句作为表语）- The fact that he passed the exam surprised us.（他通过考试的事实使我们很吃惊。
）（名词性从句作为同位语）名词性从句可以在句子中起到名词的作用，承担特定的语法角色，并且可以被代词所替代。
2. 主语从句主语从句是一个完整的句子，用作主句中的主语。
它通常由连接词引导，如that、whether、who、which等。
主语从句通常以陈述句的形式出现，例如：- That he doesn't like tomatoes surprises me.（他不喜欢西红柿让我很惊讶。
）- Whether we should go camping is still undecided.（我们是否应该去露营还没有决定。
）主语从句在句子中起到名词的作用，承担主语的语法角色。
它和名词性从句一样，在结构和功能上都类似，但主语从句只能用于句子的主语部分。
3. 尽管名词性从句和主语从句之间存在一些相似之处，但它们在语法功能和用法上有一些显著差异。
名词性从句有哪些
名词性从句有哪些名词性从句共有四种，分别是主语从句（整个从句在主句中做主语），表语从句（整个从句在主句中做表语），同位语从句（整个从句在主句中做同位语），宾语从句四类（整个从句在主句中做宾语）。
名词性从句有哪些1、主语从句例如：It + be + 形容词/名词/动词过去分词 + that 从句It is strangethat he knows nothing about it.从句：He knows nothing about it.主句：It is strange something (= He knows nothing about it).连接词在从句中是否充当成分：否连接词是否可省：否2、宾语从句例如：that 引导的宾语从句I think that English is important.从句：English is important.主句：I think something (= English is important).连接词在从句中是否充当成分：否连接词是否可省：是3、表语从句用法和结构同宾语从句，区别在于：系动词后面所接的从句为表语从句，而及物动词后面所接的从句为宾语从句。
例如：- that 引导的表语从句The truth is that English is important.从句：English is important.主句：The truth is something (= that English is important).4、同位语从句同位语从句就是在复合句中作名词的同位语的名词性从句。
同位语从句对于名词进一步解释，说明名词的具体内容，一般由that引导，同位语从句有时可以不紧跟在它所说明的名词后面，而是被别的词隔开。
名词性从句的分类与用法总结主语从句宾语从句表语从句等
名词性从句的分类与用法总结主语从句宾语从句表语从句等名词性从句的分类与用法总结名词性从句是英语中的一种复合句结构，用来充当主句中的名词成分。
名词性从句可以分为主语从句、宾语从句、表语从句和同位语从句等。
下面将对这些名词性从句的分类与用法进行总结。
一、主语从句主语从句在句中充当主语的角色，常常以以下引导词引导：that, whether, who, whom, which, what, whoever, whomever, whichever, whatever等。
例如：1. Whether we will win the game is still uncertain.是否我们会赢得比赛还不确定。
2. It is important that she attends the meeting.她出席会议很重要。
二、宾语从句宾语从句在句中充当动词的宾语，常常以以下引导词引导：that, whether, who, whom, which, what, whoever, whomever, whichever, whatever等。
例如：1. He asked me if I had finished my homework.他问我是否我已经完成了作业。
2. Can you tell me what time the bus leaves?你能告诉我公交车什么时候开吗？三、表语从句表语从句在句中充当表语的角色，常常以以下引导词引导：that, whether, who, whom, which, what, whoever, whomever, whichever, whatever等。
例如：1. His wish is that he becomes a successful businessman.他的愿望是他成为一名成功的商人。
2. The problem is how we can solve it.问题是我们如何解决它。
名词性从句
名词性从句一名词性从句包括主语从句、宾语从句、表语从句、同位语从句。
1．主语从句：主语从句在整个句子中作主语。
(1)不同于其它的连词，它不充当句子的成分，只是单纯的连接词，通常不可以省略,有时为了保持句子平衡, that从句后置, 而由it作形式主语。
其他类似句型还有：It + be +important/ necessary/ obvious + that 从句It + be +reported/believed/thought/has been decided + that从句It + be +a pity/a shame/a fact/a surprise/ common knowledge+ that从句It + happens/occurs/seems/appears + that 从句That the driver could not control his war was obvious.It was obvious that the driver could not control his car.(2)if 不能用在主语从句中，而是用whether Whether he left (or not) is unknown(3)当主语从句作主语时，谓语动词一般用第三人称单数What we need is more time and money.What we need are many more books.2.表语从句：表语从句出现在系动词后，充当表语。
其基本结构为: 主语 + 系动词 + that从句。
The trouble is that we are short of money.Go and get your coat. It’s where you left it.3.宾语从句：及物动词，形容词和介词后加宾语从句作其宾语。
(1)宾语从句时态与主句相呼应，但宾语从句表示的是客观真理或普遍现象除外The teacher told us that the earth moves aroundthe sun(2)连词whether和 if可以互换，但注意下列情况连词后紧跟or not时用whether I want to knowwhether or not they will come. 作介词宾语是用whether引导宾语从句He wasinterested in whether he saw her there. 连接词后直接加不定式，不能用if只能用whether Hedoesn’t know whether to stay or not. 如果宾语从句是否定时，一般用if引导I care ifhe will not attend the meeting.(3)当宾语从句后带宾补时，要用“主语+谓语+it +宾补+that-clause,that不可省略I think it certain that she will do well inher exam.(4)当主语是I, we ，主句用think, believe, suppose, expect, imagine五个动词时，用否定转移I don’t think he will win the game, will he?(5)that在宾语从句常可以省略，但由and或 but连接两个或多个宾语从句时，仅可以省略第一个连词that He said (that) he had eaten nothing but that he wasn’t hungry.(6)注意区别if引导的宾语从句和条件状语从句I don’t know if he will come.If he comes, I’ll let you know.注意：beg, insist, desire, command, order, suggest, advise, demand, require, request等动词如果后面加上宾语从句的话, 从句谓语部分必须用should do。