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英语语法名词性从句：表语从句用法解析英语语法名词性从句：表语从句用法解析引导表语从句的词有连词that，whether，连接代词和连接副词，关系代词型what，以及as if，as though，because等连词。
1.由that引导The fact is that he doesn’t really try.事实是他没有做真正的努力。
The trouble is that I have lost his address.麻烦的是我把他的地址丢了。
My suggestion is that we should tell him.我的建议是我们应该告诉他。
His sole require mentw as(is)that the system work.他唯一的要求是这个制度能起作用。
My idea is that we should start making preparations right now.我的意见是我们马上就开始做准备工作。
2.由whether引导The question is whether the film is worth seeing.问题是这部电影是否值得看。
【注意】whether可引导表语从句，但与之同义的if却通常不用于引导表语从句。
3.由连接代词引导You are not who I thought you were.你已不是我过去所想像的人。
The problem is who we can get to replace her.问题是我们能找到谁去替换她呢。
The question is who(m) we should trust.问题是我们应当相信谁。
What I want to know is which road we should take.我想知道的'是我们应走哪条路。
4.由连接副词引导The problem is how we can find him.问题是我们如何找到他。
高中英语表语从句详解1、概述用作表语的从句叫作表语从句，它位于主句中的连系动词之后。
引导表语从句的词有从属连词that、whether、as though(if)；关系代词who, what, which, whom, whose, whatever, whoever, whomever, whichever等；关系副词when, where, why, how, however, whenever, wherever等。
可以接表语从句的连系动词由be, look, remain, seem等。
That引导表语从句时，在口语中，间或可以省略。
The trouble is that we are short of money.困难是我们资金短缺。
That is why stone walls are used instead of fences around New England fields.这就是为什么在新英格兰用石头墙而不用栅栏的原因。
At that time, it seemed as if I couldn't think of the right word anyhow.当时,我似乎怎么也想不出一个恰当的字眼来。
2、由从属连词that，whether引导的表语从句。
that在引导表语从句时无词义，而whether有词义，意为、“是否”。
这时主句的主语常常是些抽象名词，如question(问题)，trouble(麻烦)，problem(问题)，result(结果)，chance(可能性)，suggestion(建议)，idea(想法)，reason(理由)等。
表语从句对主句主语进行说明、解释，使主语的内容具体化。
The trouble is (that) she has lost his money. 麻烦的事是他丢了钱。
The question is whether we need more ice cream.问题是我们是否还需要一些冰淇淋。
英语表语从句表语从句：就是用一个句子作为表语。
说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语。
表语从句是名词性从句的一种。
表语从句的基本结构是：“主语+连系动词+关联词+表语从句”。
连接表语从句的连接词有：that, what, who, when, where, which, why, whether, how,，whoever whomever，whichever，whatever 等。
例如：The question is when he can arrive at thehotel. His suggestion is that we should stay calm.①语序：从句的语序必须是陈述句语序，即“主语+谓语”这种形式。
②时态：当主句是一般现在时或一般将来时的时候，从句可以是任何时态，而当主句是一般过去时的时候，从句，从句时态必须是过去时范围的时态，即（一般过去时，过去进行时，过去完成时，过去将来时）。
③连接词：当从句意思完整，主句意思肯定时，连接词用that，且可以省去，当从句意思完整，主句意思不确定或含否定含意时，常用if 或whether （是否），当从句意思不完整时，连接词则是代替不完整部分的特殊疑问词。
根据关联词来区分,表语从句可以分为六种:一、由that 引导的表语从句The trouble is that he misunderstood 麻烦的me 是他.误解了我。
有时，引导表语从句的连词that 可以省略The truth is (that) I’ didnt finish my term essay 事实. 是我没有写完学期论文。
二、由连接代(副)词引导的表语从句连接代词who, whom, whose, what, which, whoever, whatever, whichever；连接副词where, when, how, 。
202X届高考英语语法之表语及表语从句用法归纳讲义表语介绍表语是连接系动词（be动词，如is, am, are, was, were等）和名词、形容词或代词的一种修饰成分，在句子中起补充说明主语的作用。
表语的主要作用是对主语进行补充说明或描述，使句子更加完整、具有逻辑。
以下是表语的用法归纳讲义。
1. 表语是名词的情况在句子中，名词可以作为表语来对主语进行说明、描绘或定义。
例如：- My mother is a teacher.我的妈妈是一名老师。
- The book is very interesting.这本书很有趣。
2. 表语是形容词的情况在句子中，形容词可以作为表语来对主语进行描述或评价。
例如：- She is happy.她很开心。
- The weather is cold.第1页/共4页天气很冷。
3. 表语是代词的情况在句子中，代词可以作为表语来代替主语，或者对主语进行指代。
例如：- It is me.是我。
- The winner will be him.胜利者将是他。
表语从句介绍表语从句是一种从句，用来充当主句中的表语，表达主句中的主语或宾语的属性、状态、性质等。
表语从句的引导词有that, whether, if等，根据具体语境使用不同的引导词。
例如：- I think that he is a good student.我认为他是个好学生。
- The question is whether he can pass the exam.问题是他能否通过考试。
以下是表语从句的用法归纳讲义。
1. 表语从句作主语表语从句可以充当主句中的主语，表示主句的主语的属性、状态、性质等。
例如：- What he said is true.他说的是真的。
- Whether he can come is not clear.他是否能来还不确定。
2. 表语从句作宾语表语从句也可以充当主句中的宾语，表示主句的宾语的属性、状态、性质等。
高中英语语法之表语及表语从句用法归纳讲义表语用法表语是用来说明主语的身份、特征和状态的，它常位于联系动词（be, become, appear, seem等）之后。
一、名词作表语Africa is a big continent.非洲是个大洲。
That remains a puzzle to me.这对我还是个难题。
二、代词作表语What's your fax number?你的传真号是多少？三、形容词作表语I feel much better today.我今天感觉好多了。
四、数词作表语She was the first to learn about it.她是第一个知道的人。
五、不定式或ing形式作表语Her job is selling computers.她的工作是销售电脑。
Our next step was to get raw materials ready.我们下一步是把原料准备好。
六、介词短语作表语The patient is out of danger.病人脱险了。
I don't feel at ease.我感到不自在。
七、副词作表语The sun is up.太阳升起来了。
I must be off now.现在我得走了。
八、从句作表语This is what he said.这就是他所说的话。
表语从句解析名词性从句指充当名词成分的从句，下分很多类型，是英语学习的重点，可以说搞懂了名词性从句，你的英语水平就极大的提升了一个level，而表从句则是名词性从句非常重要的一种类别，也是最难搞懂的一个类别！一、概念：要弄懂什么是表语从句，就一定要知道什么是表语。
表语用来说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语。
二、关联词：1. 连系动词有be，look，seem，sound，appear等。
eg. It looks as if a huge diamond.2. 从属连词whether，as，as if / though。
高中英语语法学习之主语从句与表语从句英语中，主语从句和表语从句是两种常见的从句类型。
它们可以修饰主句，使句子更加完整和丰富。
下面将介绍它们的用法和特点。
一、主语从句正确，主语从句是一个完整的从句，它作为主句的主语。
在英语中，主语从句通常由连词引导，如that、whether、if等。
例如:The book that I read last night was very interesting.(我昨晚读的这本书非常有趣。
)Whether he will pass the examination is still unknown.(他是否能够通过考试仍然不知道。
)If he doesn't come to the meeting, we won't be able to vote on the motion.(如果他不参加会议，我们就无法进行投票。
)thatthat可以引导主语从句，表示某个事实或观点。
例如:I saw the man that I had been looking for.(我看到了我一直在找的那个人。
)在这个例句中，that引导了一个主语从句，它修饰了主句中的谓语动词see。
通过使用that,我们可以更清晰地表达某个事实或观点，使句子更加具体和丰富。
whetherwhether可以引导主语从句，表示某个问题或情况是否成立。
例如:Whether we will go to the beach tomorrow is still up in the air.(我们明天去海滩是否成行还有待决定。
)在这个例句中，whether引导了一个主语从句，它修饰了主句中的谓语动词will go。
通过使用whether,我们可以更清晰地表达某个问题或情况是否成立，使句子更加具体和丰富。
iff可以引导主语从句，表示某个条件是否成立。
例如:If you don't finish your homework, you won't be able to watch TV tonight.(如果你不完成你的作业，今晚就不能看电视了。
高中英语语法：表语从句以及主语从句分析英语的语法一直是一个非常重要的成分，是英语学习汇总必不可少的一个基石，在高中英语的学习中，如果能够掌握一个比较全面熟练的语法知识体系，在后续的英语学习过程中会非常容易并且游刃有余，今天就让我们一起来学习关于高中英语语法中的：表语从句以及主语从句吧。
一、表语从句1.定义：用作表语的从句叫做表语从句。
2.构成：关联词+简单句3.引导表语从句的关联词的种类：(1)从属连词that。
如：The trouble is that I have lost his address.麻烦是我把他的地址丢了。
(2)从属连词whether,as,as if。
如：He looked just as he had looked ten years before.他看起来还与十年前一样。
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。
能跟表语从句的谓语动词一般为系动词be,seem,look等。
如：It looked as if it was going to rain.看起来天要下雨了。
(3)连接代词who,whom,whose,what,which,whoever,whatever,whichever 连接副词where,when,how,why。
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。
The question is how he did it.问题是他是如何做此事的。
专业英语语法表语从句表语从句是一个句子，用作主语、宾语、主语补语、宾语补语中作表语的从句。
以下是一些常见的专业英语语法中的表语从句结构：1. 主语 + be动词 + 表语从句：例如：The main challenge is that how to improve efficiency.2. 宾语 + 动词 + 表语从句：例如：I believe that the market will recover soon.3. 主语 + 动词 + 宾语 + 表语从句：例如：They found it difficult to accept that they had failed.4. 动词 + 表语从句：例如：The problem is whether we can find a solution.5. There be + 表语从句：例如：There are many factors that contribute to global warming.在表语从句中，常见的引导词有：that, whether, if, who, whom, which, whose等。
例如：- I don't know if she will come to the meeting.（我不知道她是否会来参加会议。
）- The problem is that we don't have enough resources.（问题在于我们资源不足。
）需要注意的是，表语从句中的引导词一般不可以省略，且在从句中充当句子成分，不可以省略。
另外，表语从句常常用陈述语序。
更多关于表语从句的内容，可以参考专业英语语法书籍或者语法学习资料。
Grammar explanation for attributive clause in college entrance examination
⾼考英语学习资料之⾼考语法专项补充 -表语从句 主讲教师 Alex 彭 ⼀．概念
表语：表⽰事物的 和 。
表语从句：是指在复合句中充当 成分的句⼦。
⼆．表语从句考点
1．引导表语从句的引导词的选择。
2．表语从句的语序( ）。
三．表语从句的引导词
四. 四类引导词引导的表语从句：
1．由连词that 引导的表语从句:引导词that 含义，在句中不做成分。
E.g. The trouble is that I have lost his . ⿇烦的是我把他地址弄丢了。
His sole r was that the system work. 他唯⼀的要求是这个制度能起作⽤。
2． ⽤连词 whether, as if = as though(似乎，好像), because 引导的表语从句:引导词有含义,在句中不做成分,不可省。
E.g ．The question is whether the film is seeing. 问题是电影是否值得看。
All this was over twenty years ago, but it’s as if it was yesterday.这都是20多年前的事了，但宛如昨天⼀样。
Now it was as though she had known Millie for years.现在好像她认识⽶莉已有好多年了似的。
It is not as though we were poor.又不是我们家⾥穷。
It’s because I passed a slip of paper for John to Helen in class.这是因为我上课时替约翰传纸条给海伦。
注：表“因为”的其他词，⽐如since, as 就不可以引导表语从句；If ⼀般不⽤来引导表语从句；能跟表语从句的⼀般是系动词，be. seem, look 等。
3．⽤连接代词引导的表语从句：who, whose, whom, which, what, whoever, whomever, whichever, whatever ，其连接代词在句中起名词性作⽤，担当⼀定成分.
E.g ．You are not who I thought you were.你已不是过去我所想象的那个⼈。
What I want to know is which road we should take. 我想知道的是我们应该⾛那条路。
4．⽤连接副词引导的表语从句：when, where, why, how 及whenever, wherever, however ，其连接副词有含义,在句中作状语。
E.g ．The question is how he did it.问题是他如何做到的。
That’s where I first I met her.那就是我第⼀次见她的地⽅。
That’s why I o to this plan.这就是我反对这个计划的原因。
That was when I was fifteen.那是我15岁发⽣的事。
表语
从句句(1)从属连词 ---- ⽆无词义，不不充当成分 (2)从属连词whether, as if, as though, because ---- 词义，不不充当成分 (3)
连接代词who, whom, what, whose, which 及其变化形式 ---- 有词义，充当成分 (4)连接副词when, where, why, how 及其变化形式 ---- 有词义，充当成分
五．注意点：
1. 名词性从句的语序都是。
2．r eason做主语时的表语从句的连接词要⽤that, ⽽不能⽤why或because.
E.g. The reason for such a serious accident is that the driver was too careless and drunk.这样⼀场严重事故的原因完全是由于司机太粗⼼和喝酒太多造成的。
3.两个常⽤句型That is why … 强调; That is because … 强调。
E.g. He didn’t see the film last night. That is because he had to help his little sister with her homework. (第⼀句话说明结果，第⼆句话说明原因。
) He had seen the film before. That is why he did not see it last night.(第⼀句话说明原因，第⼆句话说明结果。
)
六. 课堂练习
1. The question is _______ we will have our sports meet next week.
A. that
B. if
C. when
D. whether
2. The reason why he failed is _______ he was too careless.
A. because
B. that
C. for
D. because of
3. Go and get your coat. It’s _______ you left it.
A. where
B. there
C. there where
D. where there
4．The problem is _______ to take the place of Ted.
A. who can we get
B. what we can get
C. who we can get
D. that we can get
5. What I want to know is ______ he likes the gift given by us.
A. that
B. if
C. whether
D.不填
6. The reason is _______ I missed the bus.
A. that
B. when
C. why
D. what
7. That is _______ we were late last time.
A. that
B. when
C. why
D. what
8. She looked _______ she were ten years younger.
A. that
B. like
C. as if
D. whether
9.—I fell sick! —I think it is _______ you are doing too much.
A. why
B. when
C. what
D. because
10. The reason why he hasn’t come is ______.
A. because his mother is ill
B. because of his mother’s being ill
C. that his mother is ill
D. for his mother is ill
11. —He was born here. -- That is _______ he likes the place so much.
A. that
B. what
C. why
D. how
12. That is ______ Lu Xun once lived.
A. what
B. where
C. that
D. why
13．______ your father wants to know is ______ getting on with your studies.
A. What; how are you
B. That; how you are
C. How；that you are
D. What; how you are
14. The trouble is ______ we are short of tools.
A. what
B. that
C. how
D. why that
15. America was ______ was first called “India” by Columbus.
A. what
B. where
C. the place
D. there where。
