名词性从句之主语从句讲解
名词性从句(宾语从句、表语从句、主语从句)讲解与练习
名词性从句〔宾语从句、表语从句、主语从句〕六大根本句型1主系表句型----- be 〔连系动词do〕2、主谓宾----- do〔vt〕3、主谓----- do(vi)----(不及物动词)4、主谓宾补----do(vt)5、主谓宾宾---do(vt) 记双宾语的动词一定要记。
6、There be (不及物动词do)--------be (不及物动词)宾语从句定义：在主谓宾句型的宾语的位置上把做为名词的宾语扩展成一个be句型或者do句型。
可以用以下公式进展表示：主语+谓语+从句。
宾语从句的连词① that , ②whether(or not)或if; ③which(whichever),who(whoever)，whom(whomever) ，whose(whosever)，what(whatever); ④when(whenever)，where(wherever)，why，how(however); ⑤ how many, how much, how long, how often，how soon宾语从句的形式：1、主谓宾句型的宾语从句: 作为名词的宾语扩展成一个be句型或者do句型。
He knows the newsHe knows that the teacher is in classroom2、主谓宾宾---do(vt) 句型的宾语从句，把直接宾语变为一个be或do句型。
He tells me the newsHe tells the news to meHe tells me that she is a teacherHe tells that she is a teacher to me3、主谓宾补句型的宾语从句需要it来做形式宾语I find Chinese important主谓宾补I find that we make a quick decision about this matter important主谓宾语从句补I find it important that we make a quick decision about this matter主谓形式宾语补宾语从句I think it necessary that we take plenty of hot water every day .我认为每天多喝开水是有必要的.I feel it a pity that I haven’t been to the get-together.我没去聚会,感觉非常遗憾.I have made it a rule that I keep diaries.我每天写日记成了习惯.4、宾语从句的省略形式：某些形容词后面可以带宾语从句，其形式为sb+be+形容词+that宾语从句：这一类形容词通常是表示人物的心理，情感等状态的形容词如：sure, certain, glad, please, happy, sorry, afraid, satisfied, surpriseda. I am glad (that) you helped me.b、I am sure (that) you can pass the exam.1、I am glad of your help.2、I am sure about your exam.分析：上面句子中介词后面所跟成分都做介词宾语。
名词性从句用法详细讲解文档
高一语法专题：名词性从句在句子中起名词作用的从句叫名词性从句。
名词性从句的功能相当于名词词组，它在复合句中能担任主语、宾语、表语、同位语，因此根据它在句中不同的语法功能，名词性从句又可分为主语从句、宾语从句、表语从句、同位语从句。
引导名词性从句的词叫做连接词，包括：1. 连词（在名词性从句中只起连接作用，不作成分）2. 连接代词（在名词性从句中作主语、宾语或表语）3. 连接副词（在名词性从句中作状语）I 主语从句：是在主句中作主语的从句。
它由连接词引导，通常位于谓语动词之前。
连接词：1. 连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether。
That he got the first prize excited him much.他获得一等奖一事使他非常兴奋。
It is doubtful whether we can get there on time.我们能否按时到达那儿还不确定。
1）that引导的主语从句：在从句中不作任何成分，也没有实际意义。
一般情况下that不可省略。
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.你不喜欢他不关我的事。
2Whether he can finish his task on time is of great importance.他是否能按时完成任务非常重要。
Whether you can succeed or not depends on howhard you work at it.你能否成功取决于你努力的程度。
2.连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语，有具体意义且不能省略。
常见的连接代词有who, whom, whose, what, which,whoever, whomever, whatever, whichever。
名词性从句_语法讲解
单个的主语从句作主语时，谓 语动词用单数形式。如果是两 个或两个以上的主语从句作主 语，谓语动词则用复数形式。 Where and when he was born has not been found. When the person was murdered and why he was murdered are still unknown.
I
名词性从句的种类
• 1.When we will start is not clear.
主语从句
• 2.Mrs Black won’t believe that her son has become a thief. 宾语从句
• 3. My idea is that we should do it right now. 表语从句 • 4.I had no idea that you were her friend.
宾语从句
在复合句中作主句的宾语,放在实义动词或介词的后 面.引导词有连词that (that 常可省略),whether, if; 代词有who, whose, what ,which; 副词有when ,where, how, why 等.如:
We believe (that) he is honest.
(4)用if不用whether的情况:
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 \ essential that…. It’s important that…. It’s natural that…. It's strange that …
同位语从句
名词性从句详解(主语从句、并与从句、表语从句与同位语从句)
主语从句如果一个句子在复合句中充当主语,那么这个句子就是主语从句。
主语从句主要有以下三类：1．由what等代词引导的主语从句：这类主语从句可由三类代词引起：1)whatWhat you need are more friends．What I did made my teacher angry．2)whateverWhatever I have done is for you.Whatever has been done here is helpful for your future．3)whoeverWhoever comes here will be welcome．Whoever take part in the activity will get reward．what 引导的主语从句，主句谓语动词通常用单数形式，但有两种特殊情况：a)what在从句中作主语时，主句谓语动词的单复数与从句的谓语动词保持一致。
What makes him happy also makes me happy.What are put into the box are important to me.b) 当主句中的表语是复数时，主句谓语动词用复数，否则用单数。
What he gave are five books.2．由that引导的主语从句：这类主语从句大多数用it作形式主语，而真正的主语放到句子后部，以保持句子的平稳，也有少数直接用这种从句作主语，不用it。
（主语从句位于句首时，that不可省略；当用it作形式主语，真正的主语放置在句尾，且谓语动词为seem、appear、be a pity、be a wonder、be likely时，that可省略。
）1）It’s a pity(that)you can’t come to my party．2）That she works hard makes her leaders satisfied．3）That Jack becomes a doctor is his mother’s wish. 3．由连接代（副)词及whether引导的主语从句：这类主语从句可以直接放在句首，也可以放到句尾，前面用先行词it作形式上的主语。
主语从句讲解及练习
主语从句一.概念：主语从句、表语从句、宾语从句和同位语从句在复合句中的作用相当于名词，因此这四种从句被称为名词性从句。
①主语从句名词性从句共有四种: ②表语从句③宾语从句④同位语从句我们先看几个句子：是谁开始先出招没什么大不了Who takes the first step is not a big deal.…这就是你要离开的原因That’s why you go away....告诉我今夜你想要梦什么Tell me what you want to dream of tonight.最后你会发现每个爱情都危险这个事实Finally you’ll find out the fact that every love is dangerous一．名词性从句的连词连接词：that，if/whether(是否)连接代词：what（+ever）, who(+ever), whom(+ever) , which(+ever), whose连接副词：when, where, how, why, whenever, wherever, however二、主语从句的连词分三类（1）从属连词引导的主语从句（that whether if）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。
That 引导主语从句通常用it 作形式主语。
例如：That you will win the medal seems unlikely.That you are so indifferent bothers（使…恼怒）me.That she survived the accident is a miracle.（奇迹）whether 引导的主语从句: whether有含义(是否)/在句中不做成分/不可以省。
注意：引导主语从句，在开头不能用if，只能用whether。
Whether we will hold a party in the open air tomorrow depends on the weather.Whether she is coming or not doesn’t matter too much.It’s uncertain whether/if he will come. {不是在句首}（2）用连接代词引导的主语从句在由连接代词what（+ever）, who(+ever), whom(+ever) , which(+ever), whose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.What I want to know is this.Whatever we do is to serve the people.注：whatever / whoever的功用whatever, whoever在主语从句中不含疑问意义。
名词性从句详解及练习
各类从句详解英语从句可以分为名词性从句、定语从句和状语从句三大类：下面我们逐一进行说明：一、名词性从句（主语从句、表语从句、宾语从句、同位语从句）主语从句、表语从句、宾语从句和同位语从句在复合句中的充当的成分和其名称相同，分别作主句的主语、表语、宾语和同位语。
上述这四种从句均被称为名词性从句。
所有的名词性从句均不能用逗号分开，并且它们都用相同的关联词，关联词如下：①主从连词：that (无意义), whether (是否), if (是否)（在句子中不充当任何成分）②连接代词：who (谁), whom (谁), whose (谁的), what (什么), which (哪一个)③连接副词：when (什么时候), where (什么地方), how (怎样), why (为什么)主从连词只起连接作用，连接代词和连接副词除了起连接作用外，还充当从句某一个成分。
另外，可以用whatever, whichever, whoever, who(m)ever等连接代词引导名词性从句，来加强语气。
下面分别对各种名词性从句进行介绍（一）主语从句（subject clause）在主句中用作主语的主谓结构称之为主语从句。
例如：That he will come to the discussion is certain.他来参加讨论是确定的。
That the moon moves round the earth is well known to all of us.月球绕地球转动，这是我们大家都熟知的。
When the meeting is to be held has not yet been decide.会议什么时候召开还没有决定。
主语从句放在句首，句子常常显得比较笨重，因此通常可以把it放在句首，作形式主语，而将主语从句放在后面。
例如上面的句子可以分别改写为：It is certain that he will come to the discussion.It is well known to all of us that the moon moves round the earth.It has not yet been decide when the meeting is to be held.下面再举一些例句：What they are after is profit.他们追求的是利润。
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……
初中从句知识点总结讲解
中级教育学校从句知识点总结讲解一、什么是从句从句是指在复合句中充当句子成分的一部分的句子。
它可以在主句中作主语、宾语、定语、状语等成分。
从句分为名词性从句、定语从句和状语从句三种。
二、名词性从句名词性从句可以在句子中充当主语、宾语、表语和同位语等成分，常见的名词性从句有主语从句、宾语从句、表语从句和同位语从句。
1. 主语从句主语从句在句中充当主语，常用毗连词有that, whether, if等。
例如：- That he is a good student is well known to everyone. 意思是“他是一个好同砚这是大家都知道的。
”- Whether he will come to the party is still uncertain. 意思是“他是否会来参与派对还不确定。
”2. 宾语从句宾语从句在句中充当宾语，常用毗连词有that, whether, if等。
例如：- He said that he would go shopping with me tomorrow. 意思是“他说他明天会和我一起去购物。
”- I don't know whether she can pass the exam.意思是“我不知道她是否能通过考试。
”3. 表语从句表语从句在句中充当表语，常用毗连词有that, whether,if等。
例如：- The fact is that he is a liar.意思是“事实是他是一个说谎者。
”- My concern is whether we can finish the project on time.意思是“我关注的是我们是否能按时完成项目。
”4. 同位语从句同位语从句在句中充当同位语，常用毗连词有that, whether, if等。
例如：- The news that he got the first prize made me happy. 意思是“他获得第一名的消息让我很兴奋。
高中英语主语从句
高中英语主语从句主语从句，在英语语法中，是一个句子作为主语，它可以是陈述句、疑问句或者是特殊疑问句。
这种从句在高考英语中占据了重要的地位，因此，理解和掌握主语从句的用法对于高中生来说至关重要。
我们要理解什么是主语从句。
主语从句就是一个句子在复合句中充当主语，例如：What he said is not true.在这个句子中，“What he said”就是一个主语从句。
主语从句有三种类型：陈述句、疑问句和特殊疑问句。
陈述句作为主语从句时，通常以that引导，例如：That he will come to the party is certain.疑问句作为主语从句时，通常以whether或what引导，例如：Whether he can come is still a question.特殊疑问句作为主语从句时，通常以who、what、which等引导，例如：Who will come is not clear.在理解了主语从句的基本概念和类型之后，我们还需要掌握如何正确使用主语从句。
使用主语从句时，需要注意以下几点：主语从句的引导词要使用正确；主语从句的时态要和主句保持一致；主语从句的语序要使用陈述句语序。
除了正确使用主语从句，我们还需要理解主语从句的省略情况。
在某些情况下，主语从句可以省略掉that，例如：It is certn (that) he will come.这种情况下，it是形式主语，真正的主语是that he will come。
高中英语主语从句是一个重要的语法知识点，需要我们熟练掌握并正确运用。
只有通过不断的练习和学习，我们才能在高考中取得优异的成绩。
（2）主语从句一般用什么引导词？引导词在从句中担任什么成分？（3）主语从句的时态有什么特殊之处？请举例说明。
（4）主语从句与宾语从句、表语从句有什么异同点？通过预习题，我们对主语从句有了初步的了解。
接下来，我们将深入学习主语从句的构成、用法以及与其他从句的区别。
名词性从句_语法讲解
now.
表语从句
• 4.I had no idea that you were her friend.
同位语从句
什么是名词性从句?
在英语的句子结构中，本来该由名词充当的主语、宾 语、表语和同位语，由一个句子来充当,这个句子就叫 名词性从句。
主语从句 ( The Subject Clause)
名
词 宾语从句 ( The Object Clause) 性
I 名词性从句的种类
• 1.When we will start is not clear.
主语从句
• 2.Mrs Black won’t believe that her son has
become a thief.
宾语从句
• 3. My idea is that we should do it right
错误 That he will not come to the meeting this evening is true.
3).whether可以引导主语从句 解释为”是否”,但if不能.
4).whoever, whatever, whichever等词可以引导主 语从句, 但no matter who, no matter what 等不能, 它们只能引导让步状语从句.
2).连接代词: who, whom, whose, what, which, whoever, whatever, whichever
Whose bag is it ?
It can`t be told. Whose bag it 来自s can`t be told.
It can`t be told whose bag it is .
Will we visit the Great Wall tomorrow? It has not been decided.
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名词性从句之主语从句讲解
文件管理序列号：[K8UY-K9IO69-O6M243-OL889-F88688] 名词性从句---主语从句 1. What is needed for the space trip is careful preparation.
2. Her wish is that she can lose weight soon. 3. I think that woman can reach every high achievements in many fields of science. 4. We were very excited at the news that our team had won. 引导名词性从句的关联词可分为三类： 一．从属连词：that（无任何词意） whether, if（均表示“是否”表明从句内容的不确定性） as if ,as though（均表示“好像”，“似乎”）以上在从句中均不充当任何成分 二．连接代词：what, who, whom, which，whose, whatever, whoever, whichever(作主宾表定) 三．连接副词：when, where, how, why(作状语) I. 主语从句 1.定义：在句子中担当主语的是一个从句,这个从句就叫做主语从句。 2.位置：主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。 3.引导主语从句的关联词： (1)从属连词that,whether,if (在从句中不充当成分，仅起连接作用) That Jack won the match yesterday surprised us. Whether he’ll come here isn’t clear. (此处不能用if) (2)连接代词who, whom, whose, what, which, whoever, whatever, whichever(充当主宾表定) What she did is not known. Whoever comes is welcome. (3)连接副词 where,when,how,why(在从句中充当状语) How this happened is not clear to anyone. When the meeting will be held is decided by our manager. 4.有时为了避免头重脚轻，常用it作形式主语，而把真正主语放在句子末尾。 How the book will sell depends on its author. = It depends on its author how the book will sell. That he is the best student in the class is obvious. = It is obvious that he is the best student in the class. 用it作形式主语的几种常见结构： (1) It is ＋ 名词 ＋ 从句 It is a fact that … 事实是… It is an honor that …非常荣幸 It is common knowledge that …是常识 (2) It is ＋ 形容词 ＋ 从句 It is natural that… 很自然 It is strange that… 奇怪的是… (3) It is ＋ 不及物动词 ＋ 从句 It seems that… 似乎… It happened that… 碰巧… It appears that… 似乎… (4) It ＋ 过去分词 ＋ 从句 It is reported that… 据报道… It has been proved that… 已证实… It is said that… 据说… 注意：主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首。(例子见上面) (2) It is said , (reported) …结构中的主语从句不可提前。 例如：It is said that President Xi will visit our school next week. (3) It happens…, It occurs… 结构中的主语从句不可提前。 例如：It occurred to him that he failed in the examination. (4) It doesn’t matter how/whether …结构中的主语从句不可提前。 例如：It doesn’t matter whether he is wrong or not. (5)含主语从句的复合句是疑问句时，主语从句不可提前。 例如： Is it likely that it will rain in the evening 5.语序：主语从句用陈述语序。(关联词位于句首不能省略) How he became a great scientist is known to us all. Who the watch belongs to is unknown. That he finished writing the composition in such a short time surprised us all. 6.主语从句中注意的事项： 1）主语从句后的谓语动词一般用单数。 Whatever he says is of no importance. Whoever says this is wrong. 但谓语动词用单数还是复数，不可一概而论，而要视句子的意义而定 What I need is money. What I need are books. 2）what 与that 在引导主语从句时的区别： what 引导主语从句时在从句中充当句子成分，如主语、宾语、表语，而that则不作任何成分。 What you said yesterday is right. That she is still alive is a consolation. 3）it作形式主语和it用于强调句的比较： it作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化；而it用于强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人时也可用who/whom。 ①主语从句常用it作形式主语，一般常用句型为：It is+{名词/形容词/过去分词}+主语从句例如： It is still a question whether she will come or not. It is strange that you should like him. It is still unknown which team will win the match. ②而强调句则不同，它的结构是：It+be+被强调部分+that+从句 强调主语：It is the times that produce their heroes.时势造英雄 强调宾语：It is English that Prof.Lin teaches us. 强调状语：It was in shanghai that I saw the film. 判断是否是强调句有一个方法，就是将that以后的“句子的其余部分”拿出来单独看，看有没有缺成分，缺的是什么成分，再把谓语动词后面that前面的那部分，带到你认为缺成分的地方，如果放进去是一句完整的句子了，那就说明是强调句。 It is still a mystery what caused the accident. It is a mystery that his death remained. 4）whether与if whether引导主语从句时,常置于句首(此时whether不能用if代替),也有后移的用法(此时whether可以用if代替) Whether they will come is not yet known. It is not yet known whether/if they will go there. whether和if的区别还有： 1. 引导表语从句用whether The question is whether you should accept it. 2. whether可以引导从句作介词的宾语 I’m not interested in whether they’ll go or not. It depends on whether we have got enough money. 3. whether可以直接跟动词不定式连用 I didn’t know whether to laugh or to cry. She hasn’t decided whether to go or not. 4. 与or not连用时，只能用whether。 I don't know whether I should go there or not.
随堂练习： 1. has helped to save the drowning girl is worth praising. A. Who B. The one C. Anyone D. Whoever 2. It was he said disappointed me. A. what ; that B. that; that C. what; what D. that; what
3. we’ll go camping tomorrow depends on the weather. A. If B. Whether C. That D. Where 4. he said at the meeting surprised everybody present. A. What B. That C. which D. who 5. was to return to school. A. That really interested him B. What really interested him
C. Which really interested him D. That interest him really