英语表语从句和同位语从句的用法及详解
英语表语从句和同位语从句的用法及详解
英语表语从句和同位语从句的用法及详解英语表语从句和同位语从句的用法及详解以下是店铺整理的英语表语从句和同位语从句的用法及详解，希望对大家有所帮助表语从句的引导词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 requirement was (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。
名词性从句之表语,主语,同位语从句
表语从句是在复合句中作表语的名词 性从句, 放在系动词之后,一般结构是 主语+系动词+表语从句
可以接表语从句的系动词有be, look, remain, seem等。另外,常用的还有 the reason why … is that … 和It is because …等结构。例如：
It 的用法： （形式主语）
It’ possible/important/necessary/clear… that……
很可能/重要的是…/必要的是…/很清楚…
It’s said/ reported… that..据说/据报道…
It’s been announced/declared that..已经通知/宣 布…
2. The reason is ___ he is unable to operate the machine.
A. because B. why C. that D. Whether 3 .That is ___ they separated.
A. that B. what C. which D. where 4.Jane is no longer ___ she was four years ago.
7) How we can help the twins will be discussed
at the meeting.
8)When they’ll start the project has not been
decided yet.
考点一:主语从句后置!
为了避免主语冗长,句子头重脚轻,经常用it作 形式主语,主语从句放在后面作真正的主语.
注 意：
表语从句同位语从句
不同点
表语从句的引导词可以省略，而同位 语从句的引导词不可以省略；表语从 句的引导词没有实际意义，而同位语 从句的引导词通常有实际意义，如时 间、地点、方式等。
表语从句与同位语从句的例
04
子
表语从句的例子
01
The problem is who we can get to replace her. （表语从句）
不同点
表语从句通常放在系动词后面，表示主语的性质、身份、特征等；同位语从句通常放在名词或 代词后面，表示该名词或代词的具体内容。表语从句可以用that引导，也可以省略；同位语从 句通常用that引导，不可省略。
表语从句与同位语从句的引
03
导词
表语从句的引导词
that
在表语从句中，that 只起到连接作用，没 有实际意义，可以省
01
表语从句通常用于描述主语的 性质、状态或身份，而同位语 从句则用于对名词或代词进行 补充说明。
02
表语从句通常用系动词be引导 ，而同位语从句则用连词引导 ，如that、whether等。
03
表语从句在句子中充当谓语的 成分，而同位语从句则对名词 或代词进行补充说明，不充当 谓语。
THANKS
语从句）
02
The idea that children should be disciplined is
widely accepted.（同位语从句）
03
The fact that she didn't tell anyone about it
remains a mystery.（同位语从句）
表语从句与同位语从句例子的比较
用法
通常在复合句中充当同位语，放 在名词或代词后面，表示该名词 或代词的具体内容。
知识讲解高考总复习：表语从句及同位语从句
引导词的区别
表语从句的引导词：that、 what、which、who、 whose等
同位语从句的引导词：that、 which、who等
时态的区别
表语从句的时态： 根据主句时态选择
同位语从句的时态： 不受主句时态限制
表语从句的时态变 化：随主句时态而 变化
同位语从句的时态 变化：不受主句时 态影响
语从句
what：表示什 么，在表语从 句中充当成分
who：表示谁， 在表语从句中 充当主语或宾
语
表语从句的时态
表语从句的时态与 主句保持一致
常见的表语从句时 态有现在时、过去 时和将来时
时态的用法取决于 主句的时态和语境
需要注意时态的正 确使用和表达意义
表语从句的省略
表语从句可省略主语和系动词，保留其他成分 省略后需注意语法正确性和句子完整性 省略后通常用逗号代替连词，保持句子流畅 省略在书面语中更为常见，需谨慎使用
省略的区别
表语从句可以省略主语和系动词，只保留表语部分 同位语从句不能省略主语和系动词，但可以省略表语部分 表语从句省略后，句子结构仍然完整；同位语从句省略后，句子结构可能不完整 表语从句省略后，意义表达可能不够清晰；同位语从句省略后，意义表达可能相对完整
THANK YOU
汇报人：XX
表语从句通常由that、whether、what、who、where等引导，可以表示主语的 性质、特征、属性或状态。
表语从句在句子中充当名词的作用，与主语一起构成主系表结构。表语从句的引导词在句子中充成分，如主语、宾语等，不可省略。
表语从句的引导词
that：无实际 意义，只起连
接作用
whether：表 示是否，常与 形容词或名词 连用，引导表
从句的引导词及其用法详解
从句的引导词及其用法详解从句是句子中的一种结构，在复合句中充当各种成分，以扩展、修饰或限制主句的意义。
从句可以由从属连词引导，这些从属连词也被称为从句的引导词。
在本文中，我们将详细介绍从句的引导词及其用法。
一、引导名词性从句的引导词名词性从句可以充当主语、宾语、表语或补语，根据其用法可以分为主语从句、宾语从句、表语从句和同位语从句。
以下是这些从句的引导词及其用法：1. 主语从句：作为主句的主语，引导词包括：that, whether, who, what, which等。
例如：- That he is late is a real problem.（他迟到是个真正的问题。
）- Whether she will come to the party is still uncertain.（她是否会来参加派对还不确定。
）- Who will be the next president is yet to be decided.（谁将成为下一任总统尚未决定。
）2. 宾语从句：作为主句的宾语，引导词包括：that, whether, if, what, who, whom, which, how, when, where等。
例如：- I don't know if he will be able to come.（我不知道他是否能来。
）- She asked me what my favorite color is.（她问我最喜欢的颜色是什么。
）- Can you tell me where the nearest bank is?（你能告诉我最近的银行在哪吗？）3. 表语从句：充当主句的表语，引导词只有一个，即that。
例如：- The fact that she passed the exam made her very happy.（她通过了考试的事实让她非常高兴。
）- His belief is that hard work leads to success.（他的信念是努力工作会带来成功。
高中英语知识点归纳从句的分类与用法
高中英语知识点归纳从句的分类与用法从句是英语中十分重要的语法结构之一。
它可以在句子中充当名词、形容词或副词的作用。
了解从句的分类和用法对于理解和运用英语非常有帮助。
本文将对高中英语中的从句分类和用法进行归纳总结。
一、名词性从句名词性从句可以在句子中作主语、宾语、表语或同位语等，常见的名词性从句有以下几种：1. 主语从句主语从句在句子中作主语，常以连接词that或whether引导。
例如：- That he has passed the exam is good news.- Whether she will come to the party is still uncertain.2. 宾语从句宾语从句在句子中作宾语，常以连接词that或wh-引导。
例如：- She said that she would be there on time.- I don't know what his name is.3. 表语从句表语从句在句子中作表语，常以连接词that或wh-引导。
例如：- My biggest hope is that we can achieve success together.- The question is whether she will accept the job offer.同位语从句用来对某个名词或代词进行解释或说明，常以连接词that引导。
例如：- The fact that he broke his promise disappointed me.- Her announcement that she was going to retire surprised everyone.二、形容词从句形容词从句用来修饰名词或代词，常以连接词that, which, who, whom, whose, when, where, why等引导。
例如：- The book that I borrowed from the library is very interesting.- I know a girl whose father is a famous actor.三、副词从句副词从句用来修饰动词、形容词或副词，常以连接词that, if, whether, because, although, when, where, how等引导。
高中英语知识点归纳同位语从句与表语从句的区别
高中英语知识点归纳同位语从句与表语从句的区别同位语从句和表语从句在英语语法中都属于从属从句的一种，但它们在使用和功能上有一些明显的区别。
同位语从句主要用来解释或者说明前面的名词或代词，而表语从句则用来描述或者说明主语的状态或性质。
本文将对这两个知识点进行归纳和总结，以帮助高中英语学习者更好地理解和运用它们。
一、同位语从句同位语从句用来解释或者说明前面的名词或代词，通常与这个名词或代词具有同位关系。
在同位语从句中，从句作为一个整体来充当名词的同位语。
1. 连接词：常见的引导同位语从句的连词有：that, whether, if, who, what, when, where, why等。
2. 位置：同位语从句通常位于主句中的名词或代词之后。
3. 功能：同位语从句的功能在于进一步解释或说明前面的名词或代词。
例句1：I have no idea whether he will come tomorrow.译文：我不知道他明天是否会来。
解释：这个例句中的同位语从句whether he will come tomorrow解释了名词idea的具体内容。
例句2：She asked me if I had finished my homework.译文：她问我是否完成了作业。
解释：这个例句中的同位语从句if I had finished my homework解释了名词asked的具体内容。
二、表语从句表语从句用来描述或者说明主语的状态或性质，通常与主语之间具有被动关系。
在表语从句中，从句的主语必须和主句的主语保持一致。
1. 连接词：常见的引导表语从句的连词有：that, whether, if, who, what, when, where, why等。
2. 位置：表语从句通常位于系动词（be动词、感官动词、使役动词等）之后。
3. 功能：表语从句的功能在于描述或者说明主语的状态或性质。
例句3：The fact is that he is not coming to the party.译文：事实是他不来参加聚会。
表语从句与同位语从句
主语从句 subject clause
名词性从句 noun clause
宾语从句 object clause
表语从句 predicative clause 同位语从句 appositive clause
His story is interesting. What he said is interesting. I heard his story. I heard what he said. I listen to his story. I listen to what he said. This is his story. This is what he said. The idea of going there is good. The idea that we should go there is good.
总结：当从句原来是特殊疑问句时， 变成名词性从句还用原来的特殊疑 问词来引导。
同位语从句的引导词
• 同位语从句的引导词有： • that, whether，what, which, who • when, where, how, why
1. 如同位语从句意义完整，应用that引导同位语从句。
（即that 不充当任何成分，只起连接作用，不可省略）
• 例：The general gave the order that the soldiers should cross the
总结：当从句原来是陈述句时，变 成名词性从句用that引导。
3.Does your sister get up early? Do you know?
→ Do you know if/ whether your sister gets up early? 4.Do animals have the same senses as humans? I often wonder. → I often wonder if/ whether animals have the same senses as humans.
高中英语知识点归纳表语从句与同位语从句的区别
高中英语知识点归纳表语从句与同位语从句的区别高中英语知识点归纳——表语从句与同位语从句的区别表语从句和同位语从句是英语语法中相似但又有细微差别的两个概念。
在句子中，它们都可以作为主语、宾语或表语，但它们在句法结构和使用方法上有一些显著的区别。
本文将重点介绍表语从句和同位语从句的区别，帮助读者更好地理解并正确运用这两个知识点。
一、表语从句表语从句是一个从句，用来作为句子的表语。
它通常用来描述或说明主语的状态、性质、身份、职业等。
表语从句一般由连接词that引导，连接词that在口语中常被省略。
1. 结构及例句：表语从句的结构为：主语 + be动词/系动词 + that从句。
例如：- My dream is that I can travel around the world one day.（从句作主语）- The fact is that he didn't pass the exam.（从句作表语）2. 特点：- 表语从句中的谓语动词通常是be动词或系动词。
- 表语从句中的连接词一般为that，有时也可以用whether或其他连接词。
- 当主句的主语和表语从句的主语一致时，表语从句的主语可以省略，而只保留连接词和谓语。
二、同位语从句同位语从句是一个从句，用来解释或说明前面的名词或代词的含义、意义等。
同位语从句常常用来作为名词的同位语，起到进一步解释说明的作用。
1. 结构及例句：同位语从句的结构为：名词/代词 + 连接词 + 从句。
例如：- The fact that he didn't pass the exam disappointed his parents.（从句作同位语）- I have no idea who will be the winner.（从句作同位语）2. 特点：- 同位语从句中的连接词可以是that、whether、if等。
- 同位语从句同样可以出现在句子的各个位置，可以作为主语、宾语或表语。
表语从句与同位语从句课件+2023届高考英语复习
I have no idea what he is doing now.
二、 同位语从句的引导词
类别
例词
说明
连接代词
who, whom, what, which, whose, 有意义，在从句中做主 宾表定
连接副词 when, where, how, why
有意义，在从句中作时 间地点方式原因状语
从属连词 that, whether
不做成分，that无意义， whether为“是否”之意
例句呈现 1. I heard the news that our team had won. 2. I come here with a message that he would be absent. 3. The story goes that he was rescued at last. 4. The rumer spread that a new school will be built here. 5. He must answer the question whether he agrees with it or not. 6.I have no idea who will go there. 7. I have no idea which book you like best.
③名词doubt之后课跟同位语从句，主句为肯定句用 whether引导，主句为否定句时用that引导。
eg. There is some doubt whether they will come to help us.
There is no doubt that Taiwan belongs to China.
名词性从句之表语,主语,同位语从句
A. because B. why C. that D. Whether 3 .That is ___ they separated.
A. that B. what C. which D. where 4.Jane is no longer ___ she was four years ago.
A. is B. are C. has D have
Appositive Clauses 同位语从句
同位语从句在句中充当同位语从句成分，其一般
跟在一些抽象名词（ idea ；belief ； fact ；
truth ； problem ；news 等）后面，对名词作
进一步解释说明.
n.+ 连接词 + 从句
A. whether B. that C. what D. when
6.What I say and think ___ none of your business.
A. is B. are C. has D have
4. It’s known to us all ___ a form of energy .
名词主语+be+that引起的表语从句
在这种句型中，常用表示事实，真理的名词， 如：fact, truth 或表示看法，观点的名词，如： idea,opinion,belief,view,feeling,suggestion,plan等 作主语。
如：
1.The fact is that our team has won the game.
A. what B. which C. that D. when
表语从句和同位语从句
表语从句一、概念表语从句是在复合句中作表语的名词性从句.放在系动词之后,一般结构是”主语+系动词+表语从句”可以接表语从句的连系动词有be, look, remain, seem等.可以接表语从句的系动词有：1.be（being,been,am,is,are,was,were)2. feel , seem , look, appear ,sound, taste , smell3. stand , lie , remain ,keep, stay4. become ,get , grow , turn ,go ,come, run, fall5. prove, turn outThe 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.引导表语从句的词：从属连词that、whether、as though、as if（That引导表语从句时，在口语中可以省略.）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.●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.例如：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.The problem was that it was too valuable for everyday use.问题是它作为日常之用太贵重了. What she couldn’t understand was that fewer and fewer students showed interest in her lessons. 我们不能理解越来越少的学生对他的课不感兴趣.●由关系代词引导的表语从句.关系代词who, what, which, whom, whose, whatever, whoever, whomever, whichever等引导表语从句，在句中作主语、宾语、表语，关系代词不能省略.例如：The question is which of us should go.问题是我们哪一个应该去.The problem was who could do the work.问题是谁能做这项工作.That's what he is worrying about.那就是他在担心的事.That's what we should do.那是我们应该做的.●由关系副词引导的表语从句.关系副词when, where, how, why 除在句子起连接作用外，在从句中还充当时间，地点，方式或原因状语，本身具有词义.例如：Go and get your coat. It's where you left it. 去把雨衣拿来.就在你原来放的地方.I had neither a raincoat nor an umbrella. That’s why I got wet through. 我们既没伞也没雨衣，这是我们淋湿的原因.That is how mice ruin many stores of grain every year.那就是老鼠是怎样每年损害大量粮食的. That is what he is worried about.那就是他所担心的.●由连词because，as if/as though等引导的表语从句.It looked as if it was going to snow.看起来好像要下雪了.That's because we never thought of it.这是因为我们从未想过此事.It seems as if he didn’t know the answer.好像他不知道答案.注意A. 表语从句一定要用陈述语序.False: The question is when can he arrive at the hotel.Right: The question is when he can arrive at the hotel.B.不可以用if，而用whether 连接表语从句(as if 例外）.（引导宾语从句时可以互换if/whether ，位于介词后要用whether，位于句首时要用whether.）引导表语从句，主语从句，同位语从句时要用whether.False: The question is if the enemy is marching towards us.Right: The question is whether the enemy is marching towards us.Right: It looked as if he had understood this question.C.不像宾语从句，在有表语从句的复合句中，主句时态和从句时态可以不一致.Right: The question is who will travel with me to Beijing tomorrow.Right: The question is why he cried yesterday.D. that在表语从句中不可以省掉.单项选择1.The question is ________ we will have our sports meet next week.A. thatB. ifC. whenD. whether2．The reason why he failed is ________he was too careless.A. becauseB. thatC. forD. because of3. Go and get your coat. It’ s ________you left itA. whereB. thereC. there whereD. where there4．The problem is _________to take the place of TedA. who can we getB. what we can getC. who we can getD. that we can get5. What I want to know is ______ he likes the gift given by us.A. thatB. ifC. whetherD.不填6. The reason is_________ I missed the bus.A. thatB. whenC. whyD. what7. That is _____ we were late last time.A. thatB. whenC. whyD. what8. She looked _________ she were ten years younger.A. thatB. likeC. asD. as though9.—I fell sick!--I think it is _______ you are doing too much.A. whyB. whenC. whatD. because10. The reason why he hasn’t come is ___________.A. because his mother is illB. because of his mother’s being illC. that his mother is illD. for his mother is ill11. —He was born here.-- That is _______ he likes the place so much.A. thatB. whatC. whyD. how12.That is ______ Lu Xun once lived.A. whatB. whereC. thatD. why13．_______your father wants to know is________ getting on with your studies.A. What; how are youB. That；how you areC. How；that you areD. What；how you are14. The trouble is__________ we are short of tools.A. whatB. thatC. howD. why that15. America was __________was first called India by Columbus.A. whatB. whereC. the placeD. there where16. China is becoming stronger and stronger. It is no longer_________ .A. what it used to beB. what it was used to beingC. what it used to beingD. what it was used to be17. ________he really means is ________he disagrees with us.A. What … thatB. That … whatC. What … whatD. That … what18. The energy is ________ makes the cells able to do their work.A. thatB. whichC. whatD. such19 —I drove to Zhuhai for the air show last week.—Is that_____ you had a few days off？A. why B .what C. when D. where20 .I had neither a raincoat nor an umbrella ____I got wet through.A. It’s the reasonB. That’s whyC. There’s whyD. It’s how21. See the flags on top of the building? That was ______ we did this morning.A. whenB. whichC. whereD. what22. --- Are you still thinking about yesterday’s game? ---Oh, that’s _____.A. what makes me feel excitedB. whatever I feel excited aboutC. how I feel about itD. when I feel excited23. What surprised me was not what he said but ______ he said it.A. the wayB. in the way thatC. in the wayD. the way which句子翻译1.这就是我想做的________________________________________________________2.这房子正是他最需要的东西.__________________________________________________________2.这就是Henry 怎样解决问题的_____________________________________________________3.问题是谁能完成这项困难的任务________________________________________________________4.今天讨论的话题是未来的学校会是怎样的_________________________________________________5.他迟到的原因是交通拥堵._______________________________________________________________6.事实是他对我撒谎了.___________________________________________________________7. You are saying that everyone should be equal, and this is ______________________________ _______________ . (disagree) 你一直说每个人应该是平等的这就是我不同意之处.9.Your coat is still _______________________________________________ . (where) 你的外套仍然在你放的地方.10.I had neither a raincoat nor an umbrella. That is ______________________________________ ___ through. (get) 我既没有雨衣也没有雨伞.这就是为什么我全身被淋湿的原因.11. It sounds ____________________________________________________ the door.(as if) 听起来好像某人正在敲门.12. It seems ______________________________ interested in Henry. (become) 好像伦敦所有人都变得对亨瑞感兴趣.13.The last time we had great fun was ________________________________________________ _____ the Water Park.(visit) 上一次我们玩得很开心的时候是我们正在参观水族公园的时候.同位语从句1.什么是同位语从句？在主从复合句中作同位语的从句称为同位语从句，常放在fact, news, idea, truth, hope, problem, information, wish,promise, answer, evidence, report, explanation, suggestion, conclusion等抽象名词后面，说明该名词的具体内容。
【高中英语】英语名词性从句：表语从句,同位语从句
【高中英语】英语名词性从句：表语从句，同位语从句1.表语以及表语从句先看下面两个句子：第一个：It is a question。
第二个：The discussion is whether the book is worth reading。
这两个句子放在一起比较，我们发现，第一句话很简单，就是一个“主语+系动词+表语”的结构。
而第二句话是be动词之后出现了一个句子：whether the book is worth reading，根据这个句子出现的位置，我们把它称为表语从句。
基本构成是：引导词+陈述句。
能够引导表语从句的引导词主要有：that，以及whether、what、how 等疑问词。
2.同位语以及同位语从句先看下面两个句子：第一句：We found out them urderer, Tom。
第二句：We found out the fact that he was killed。
这组的第一句里，the murderer与Tom地位等同，同指一个人。
去掉其中的任何一个，句子还会保持语法上的正确性，比如去掉themurderer或Tom，这句话都不会有语法错误，这就是同位语。
同位语的部分变成一个句子的形式就生成了相应的从句叫做同位语从句。
同位语从句出现在句子中名词性成分之后，这个名词一般是专有名词或比较抽象的概念，比如说：fact(事实)、idea(想法)、theory(理论)、assumption(假设)等等，后面常出现由that引导的同位语从句。
常用来引导同位语从句的引导词主要包括：that、whether等。
感谢您的阅读，祝您生活愉快。
初中英语同位语从句、主语从句及表语从句
初中英语同位语从句、主语从句及表语从句同位语从句，主语从句和表语从句一、同位语从句1.同位语：当两个指同一事物的句子成分放在同等位置时，一个句子成分被用来说明或解释另一个句子成分，前者就叫做后者的同位语。
这两个句子成分多由名词或代词担任。
同位语通常放在其说明的名词或代词之后。
eg:We have two children, a boy and a girl.eg:We ,the chinese people , are determinded to build China into a powerful an prosperous country.2.同位语从句：与先行词（名词或代词）同位或等同的从句叫做同位语从句。
同位语从句的先行词多为fact, news, idea, opinion, thought, suggestion, promise, word(消息), message, request, order, proposal, plan, question等，多由连接代词that引导。
eg:The fact that the money has gone doesn’t mean it was stolen.eg:The hope that he may recover is faint.3.同位语从句的引导词及特点：1）连接代词that 引导的同位语从句中，that只起连接作用,不充当句子的成分。
2）连接代词who, which, what和连接副词where, when, why, how引导的同位语从句中，其引导词在句子中起连接作用即将主句与从句连接起来，且要在从句中充当成分。
3）从属连词whether, if引导同位语从句中，whether, if只起连接作用，不在句子中充当成分，也不替代先行词。
注：连接代词与连接副词，关系代词与关系副词的区别如下：连接代词和连接副词是引导同位语从句的，其在句子中起连接作用即将主句与从句连接起来，且要在从句中充当成分（that除外）；关系代词与关系副词是引导定语从句的，其在句子中除了具备与连接代词和连接副词同等的作用外，即起连接作用（连接主从句），在句子中充当成分，而且还要替代先行词。
表语从句与同位语从句
• The order that we received yesterday was that we should send a few people to help the other groups. • 我们昨天收到的命令是我们应该派几个人 去帮助别的几个小组 • (定语从句,是名词order的修饰语,that在从句 中作received的宾语,可以省略)
•
• 3.如同位语从句意义不完整，需增加"什么 时候"、"什么地点"、"什么方式"等含义，应 用when, where, how等词引导同位语从句。 • I have no idea when he will be back • I have no impression how he went home, perhaps by bike
三。 连接代词 引导 （who、whom、which） • you are not who i thought you were • the question is whom we should trust • what i want ot know is which road we should take.
判断题
• The possibility that the majority of the labour force will work at home is often discussed. • (同位语从句) • We are not looking into the question whether he is worth trusting. • (同位语从句) • Word came that he had been abroad. • (同位语从句)
表语从句和同位语从句的区别
表语从句和同位语从句的区别同位语从句和表语从句，都属于名词性从句，也就是说，这两类从句在句子中都充当名词性成分。
表语从句，是指在句子中充当表语成分的，所谓表语，就是对主语说明，一般前面有系动词。
同位语从句，是用来对前面的名词作进一步的说明，一般用that作引导词。
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 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。
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。
5. 由关系代词型what引导He is no longer what he was. 他已经不是以前的他了。
6. 由as if / as though引导It is not as though we were poor. 又不是我们家里穷。
引导同位语从句的词语通常有连词that，whether，连接代词和连接副词等。
1. 由that引导We heard the news that our team had won. 我们听到消息说我们队赢了。
（注意1）在某些名词如demand, wish, suggestion, resolution等后面的同位语从句要用虚拟语气。
（注意2）引导同位语从句的连词that通常不省略，但在非正式文体中也可以省去。
如：He gabbed his suitcase and gave the impression he was boarding the Tokyo plane. 他拿起了手提箱，给人的印象是他要登上飞往东京的飞机了。
必考点04 主语、表语与同位语从句(解析版)
必考点04 主语、表语与同位语从句题型一主语从句【解题技巧提炼】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、宾语从句、表语从句和同位语从句。
所以充当主语的从句叫主语从句。
主语从句的常用引导词有：（1）连接词that;（2）连接词whether;（3）连接代词:what, who, which, whom, whose,whatever, whoever, whomever, whichever等;（4）连接副词:when, where, how, why, whenever, wherever 等。
一、that引导的主语从句1.that引导主语从句时只起连接作用,在句子中不作任何成分,也无任何意义。
that引导主语从句时通常不能省略,尤其是位于句首时。
*That he will win the medal seems unlikely.他似乎不大可能获得奖牌。
2.有时为了平衡句子结构,用it充当形式主语,而将that从句置于后面。
*It is certain that she will do well in her exam.毫无疑问,她考试成绩会很好。
3.主语从句中常用it作形式主语的句型有:(1)It+be+形容词(clear, obvious, true, possible, certain, important, necessary, strange, natural, likely, surprising, vital等) + that从句*It is obvious that he has done what he can to help you.很明显,他已经尽了最大努力来帮助你。
(2)It+be+名词(词组)(a pity, a shame, an honour, a fact, no wonder, no surprise等) + that从句*It’s an honour that we have been invited to the party.很荣幸我们能被邀请参加宴会。
表语从句、同位语从句
三．表语从句表语从句在复合句中作表语的名词性从句，放在系动词之后，一般结构是“主语＋连系动词＋表语从句”。
可以接表语从句的连系动词有be, look, remain, seem等。
引导表语从句的that常可省略。
另外，常用的还有the reason is that… 和It is because 等结构。
例如：1) The question is whether we can make good preparation in such a short time.2) This is why we can’t get the support of the people3) But the fact remains that we are behind the other classes.4) The reason he is late for school is that he missed the early bus.四．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。
1. 同位语从句的功能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，例如：1) The king’s decision that the prisoner would be set free surprised all the people.2) The order that all the soldiers should stay still is given by the general.2. 同位语在句子中的位置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。
例如：He got the news from Mary that the sports meeting was put off.5. 同位语从句，即与先行词同位或等同的从句，其先行词多为belief, doubt, fact, hope, idea, news, promise, question, remark, reply, report, thought, truth 等；其引导词多为that（在口语中可省去），也可用whether what、when、where等，如：There can be no doubt that we'll finish in time.Most people are familiar with the idea that all matter consists of atoms.We should discuss carefully the important question whether or not we can complete the task within a week.I have on idea when he will come back home.I have on idea where he comes from.注意that 在同位语从句中不作任何句子成分，只起引导从句的作用，。
表语从句和同位语从句
我的问题是他是否离问词 ） 当表语从句为疑问的语气时， 疑问词来引导， 当表语从句为疑问的语气时，用wh-疑问词来引导， 疑问词来引导 要注意从句的语序为陈述语序 陈述语序。 要注意从句的语序为陈述语序。
1. My question is who left.
1.Africa is a big continent. 2. The patient is out of danger. 3. The sun is up. 4. The egg smells smelly. 5. Her job is selling computers. 6. The baby seems to be asleep.
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
二.引导表语从句的关联词 引导表语从句的关联词 引导表语从句的引导词有以下几类： 引导表语从句的引导词有以下几类： 引导词有以下几类 • 1）that---不能省略 ） 不能省略
The trouble is that I have lost his address.
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英语表语从句和同位语从句的用法及详解英语表语从句和同位语从句的用法及详解
表语从句的引导词
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asif,asthough,because等连词。
1.由that引导
Thefactisthathedoesn’treallytry.事实是他没有做真正的努力。
ThetroubleisthatIhavelosthisaddress.麻烦的是我把他的地址丢了。
Mysuggestionisthatweshouldtellhim.我的建议是我们应该告诉他。
Hissolerequirementwas(is)thatthesystemwork.他唯一的`要求是这个制度能起作用。
Myideaisthatweshouldstartmakingpreparationsrightnow.我的意见是我们马上就开始做准备工作。
2.由whether引导
Thequestioniswhetherthefilmisworthseeing.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
YouarenotwhoIthoughtyouwere.你已不是我过去所想像的人。
Theproblemiswhowecangettoreplaceher.问题是我们能找到谁去替换她呢。
Thequestioniswho(m)weshouldtrust.问题是我们应当相信谁。
WhatIwanttoknowiswhichroadweshouldtake.我想知道的是我们
应走哪条路。
4.由连接副词引导
Theproblemishowwecanfindhim.问题是我们如何找到他。
ThatwaswhenIwasfifteen.这是我15岁时发生的事。
That’swhereIfirstmether.那就是我第一次遇见她的地方。
That’swhyhedidn’tcome.这就是他没有来的缘故。
That’swhyIobjecttotheplan.这就是我反对这个计划的原因。
That’swhereyouarewrong.这就是你不对的地方。
5.由关系代词型what引导
That’swhatIwanttostress.这是我想强调的。
That’swhatweareherefor.我们来这里就为了这个。
Fameandpersonalgainiswhatthey’reafter.他们追求的是名利。
Heisnolongerwhathewas.他已经不是以前的他了。
6.由asif/asthough引导
Itisn’tasifyouweregoingawayforever.又不是你离开不回来了。
NowitwasasthoughshehadknownMillieforyears.现在好像她认识米莉已有好多年了似的。
Itisnotasthoughwewerepoor.又不是我们家里穷。
同位语从句的引导词
引导同位语从句的词语通常有连词that，whether，连接代词和连接副词等。