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徐名词性从句知识点总结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，名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。
（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：1、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）。
2、不可省略的连词：（1）介词后的连词（2）引导主语从句和同位语从句的连词不可省略。
That she was chosen made us very happy.We heard the news that our team had won.（二）主语从句1、主语从句在复合句作主语。
e.g. Who will go is not important.2、用it作形式主语，主语从句放在句末。
e.g. It doesn’t matter so much whether you will come or not.主要句型有：（1）It+be+形容词+that从句。
It is probable that he told her everything. 很可能他把一切都告诉她了。
（2）It+be+名词词组(no wonder, an honour, a good thing, a pity, no surprise, etc.)+that从句。
名词性从句与宾语从句的引导词名词性从句和宾语从句都是英语语法中的重要部分，它们由引导词引导，用来充当名词的作用。
本文将详细介绍名词性从句和宾语从句的引导词及其用法。
一、名词性从句的引导词名词性从句是指在句子中扮演名词角色的从句。
常见的名词性从句引导词包括：that, whether/if, what, whoever, whomever, whichever, whose等。
1. 连词that连词that用来引导主语从句、宾语从句和表语从句，常见用法如下：- 主语从句：That he is coming is good news.- 宾语从句：She said that she would come.- 表语从句：The fact that he passed the exam pleased his parents.2. 连词whether/if连词whether和if都可以引导主语从句、宾语从句和表语从句，两者可以互换使用。
常见用法如下：- 主语从句：Whether he will come or not is uncertain.- 宾语从句：I don't know whether/if she is happy or not.- 表语从句：The question is whether/if we should go or stay.3. 疑问词what疑问词what用来引导主语从句、宾语从句和表语从句，常见用法如下：- 主语从句：What he said is important.- 宾语从句：I don't know what he wants.- 表语从句：Her job is what she loves.4. 关系代词whoever/whomever/whichever/whose关系代词whoever/whomever/whichever/whose分别用来引导主语从句、宾语从句和表语从句，常见用法如下：- 主语从句：Whoever comes first will get a prize.- 宾语从句：I will give it to whomever needs it.- 表语从句：Whose decision it is remains unknown.二、宾语从句的引导词宾语从句是指在句子中充当宾语角色的从句。
三大宾语从句的用法及例句宾语从句是指在主句中作宾语的从句。
它有三种类型：名词性从句、形容词性从句和副词性从句。
本文将分别介绍这三种类型的宾语从句的用法，并举例说明，以帮助读者掌握宾语从句的用法。
一、名词性从句名词性从句在句子中充当名词的成分，包括主语从句、宾语从句、表语从句和同位语从句。
宾语从句作为动词的宾语，常由连接词that引导，也可以由wh-词引导，如what、who、when、where等。
在使用宾语从句时，需要注意一些关键点：1. 宾语从句的位置宾语从句通常位于及物动词、形容词后面，介词后面，或者某些专门的句式结构中。
例如：He said (that) he would come to the party.I wonder if she has received my letter.She told me where she had been.2. 连词的选择连接宾语从句的连词除了that外，还有wh-疑问词。
在一般情况下，that是最常用的连接词，而wh-词通常用来引导特殊疑问句和感叹句。
例如：I know that he is a good student.She asked where the library is.3. 虚拟形式的使用在名词性从句中，if引导的从句通常表示一种假设或虚拟的情况，因此在虚拟语气的用法上，宾语从句需注意与主句的时态形式和语气搭配。
例如：She would be happy if she were invited.I wish that he were here now.二、形容词性从句形容词性从句是用来修饰名词或代词的从句，通常由as, which, who, whom, whose, where, when, why, that等连词引导。
它为名词或代词提供更多的信息和限定。
在使用形容词性从句时，需要注意以下几点：1. 连词的选择形容词性从句的连接词相对灵活，通常可以根据具体情况选择合适的连接词。
英语语法解析名词性从句宾语从句在复合句（由一个主句和一个或几个从句构成的句子称为复合句）中作宾语的从句称为宾语从句。
宾语从句的位置宾语从句放在主句谓语动词（及物动词）或介词之后，作宾语。
He didn't know what he should do. 他不知道该怎么办。
（宾语从句做主句谓语动词know的宾语）You can give the book to whoever likes it. 你可以把这本书给任何喜欢它的人。
（宾语从句作介词to的宾语）重点提示：①在表建议，命令，劝告等含义的动词后的宾语从句中，谓语动词用虚拟语气，should+动词原形，should可以省略。
He suggested that we (should) set out immediately. 他建议我们立即出发。
The general ordered that we (should) attack at once. 将军命令我们立即进攻。
②宾语从句可以作介词的宾语，但that引导的宾语从句只用在except，but，in等少数几个介词之后作宾语。
He walked to school but that it rained. 要不是下雨，他就步行去上学了。
（but that要不是，若非）The meeting was put off in that something urgent happened. 因为发生了紧急的事情，会议被推迟了。
（in that因为，由于）宾语从句的连接词：从属连词：that，if，whether连接代词：what，who，whom，whose，which，whatever，whoever，whomever，whichever等连接副词：when，where，why，how1.that引导宾语从句的用法that引导宾语从句，本身没有意义，在从句中不做成分，一般可以省略。
He said (that) I could leave first. 他说我可以先走。
名词性从句的三种类型及例句解析名词性从句是指在一个句子中充当名词的从句。
它可以作主语、宾语、表语和同位语等，并能够起到连接子句与主句的作用。
在英语语法中，有三种主要类型的名词性从句：宾语从句、主语从句和表语从句。
本文将详细解析这三种类型，并举例说明其用法。
一、宾语从句宾语从句作为一个整体出现在主句中的动词后面，充当主句的宾语。
它常常引导由that、whether/if、wh-疑问词引导的从句。
下面是一些例句：1. 主句：He asked me a question.宾语从句：He asked me whether I had finished my homework.解析：宾语从句"whether I had finished my homework"作为动词"ask"的宾语，表达了一个疑问。
2. 主句：She doesn't know the answer.宾语从句：She doesn't know what the answer is.解析：宾语从句"what the answer is"作为动词"know"的宾语，表示对答案的不知道。
3. 主句：They wonder if he will come to the party.宾语从句：They wonder if/whether he will come to the party.解析：宾语从句"if/whether he will come to the party"作为动词"wonder"的宾语，表达了对他是否会来参加派对的疑问。
二、主语从句主语从句作为一个整体出现在句子的最前面，充当主句的主语。
它通常由that引导，也可以由wh-疑问词引导。
以下是一些例句：1. 主句：It is important to learn a foreign language.主语从句：That she is a hardworking student is important.解析：主语从句"That she is a hardworking student"作为句子的主语，强调了她是一个勤奋的学生的重要性。
名词性从句和宾语从句的用法名词性从句和宾语从句是英语语法中的两个重要内容，它们在句子中充当名词的角色，起到连接主句和从句的作用。
本文将详细介绍名词性从句和宾语从句的用法，并给出相应的示例。
一、名词性从句的用法名词性从句是指充当主句中某一成分的从句，它可以起到名词的作用，常用作主语、宾语、表语等。
名词性从句一般引导词有that, whether/if, who, whom, which, what等。
下面分别介绍名词性从句的三种常见用法。
1. 名词性从句作主语名词性从句作主语时，常用it作为形式主语，而将从句置于句末。
例如：It is important that you arrive on time.（你准时到达很重要。
）Whether he will come or not remains unknown.（他是否会来还不确定。
）2. 名词性从句作宾语名词性从句作宾语时，从句通常紧跟在一些动词、形容词或名词后面。
常见的动词有believe, think, know, consider, hope, want等。
例如：She believes that honesty is the best policy.（她相信诚实是最好的策略。
）They hope to find out what happened.（他们希望找出发生了什么事。
）3. 名词性从句作表语名词性从句作表语时通常使用it作为形式主语，而将从句放在后面。
例如：I find it interesting that he likes playing the piano.（我发现他喜欢弹钢琴很有趣。
）It is strange that she didn't come to the party.（她没有来参加晚会真奇怪。
）二、宾语从句的用法宾语从句是指充当主句中动词的宾语的从句，常用作及物动词的宾语、介词的宾语以及某些动词后面的宾补。
名词性从句之宾语从句任何一个句子中都不可以有两个谓语，所以在其中一个谓语前必须要有连词。
在从句中要用陈述句语序。
A.宾语从句的连接词1.从属连词主要有that, if, whether1)that引导表示陈述句的宾语从句（包括肯定句和否定句），连词由that引导，因为that在从句中不作任何成分，也没有任何具体意思，因此在口语或非正式文体中常省略。
eg: He told me that he would go to the college the next year.I know that she is losing weight.He believes (that) the boy in rags is his neighbor Mike.● that 常常在believe，suppose，think，say，see，know，hear等后面可以省略。
2)if和whether引导表示“是否”的宾从，在从句中不做任何成分，但有意思，所以不能省略(if、whether有时可以互换)eg: The two brothers didn’t know whether Henry would take the chance.I wander if you can help me with my computer.They ask me whether it’s necessary to cook the vegetables or not.◆if, whether在宾语从句中的区别①if和whether在作“是否”解时,引导宾语从句常放在动词know，ask，care，wonder，find out等之后。
②介词后一般不用if。
③whether后可以加or not,但是if不可以。
④不定式前只能用whether.eg：I can’t decide whether to stay. 我不能决定是否留下.小练习：1. I don't know _________ he will come tomorrow. _________ he comes, I'll tell you．2. I don't know _______ they have passed the exam.3. I found _______ I lost ten dollars.4. I believe _______ you are an honest man.5. I wonder _______you would mind me smoking here or not.2.连接代词what, who, whom ,whose , which. 因为连接代词在从句中担任一定的句子成分，具有一定的意义，所以不可以省略。
名词性从句和宾语从句的高级应用和辨析名词性从句和宾语从句是英语语法中重要的从句结构，能够用来充实句子并起到关键作用。
在本文中，我们将讨论名词性从句和宾语从句的高级应用以及如何正确辨析它们。
1.名词性从句的高级应用名词性从句可以在句子中充当主语、宾语、表语和同位语。
下面分别介绍它们的应用。
1.1 主语从句主语从句用来充当主句的主语，常用引导词有that, whether/if等。
例如：- That he is late again really annoys me.（他再次迟到真的让我很生气。
）- Whether she will come to the party is still uncertain.（她是否会来参加派对还不确定。
）1.2 宾语从句宾语从句用来充当主句的宾语，常用引导词有that, whether/if, who, what, when, where, why, how等。
例如：- She asked me if I could help her with the project.（她问我是否能帮她完成这个项目。
）- I don't know what they are talking about.（我不知道他们在谈论什么。
）1.3 表语从句表语从句用来充当主句的表语，常用引导词有that, whether/if, who, what, which等。
例如：- My biggest concern is whether they will accept the offer.（我最担心的是他们是否会接受这个提议。
）- The question is what we should do next.（问题是我们下一步应该做什么。
）1.4 同位语从句同位语从句用来对主句中的名词进行解释或补充说明，常用引导词有that, whether/if, who, what等。
例如：- The fact that he lied to us surprised everyone.（他向我们撒谎的事实让每个人都很惊讶。
一、宾语从句的引导词宾语从句通常由连词that和whether (if)、连接代词或连接副词以及关系代词型what引导：1. that引导We believe that he is honest. 我们相信他是诚实的。
The doctor insists that I give up smoking医生坚持要我戒烟。
I suggest that we should go tomorrow. 我建议我们明天走。
I suggested that we should go the next day. 我建议我们第二天走。
We learnt from his letter that he was in Spain. 从他的信里我们了解到他在西班牙。
The seller demanded that payment should be made within five days. 卖方要求5日内付款。
2. whether / if引导I don't know whether he'll arrive in time. 我不知道他是否能及时到。
I didn't know whether they liked the place. 我不知道他们是否喜欢这个地方。
I'll see whether I can induce him to accept it. 我要看看我是否能劝他接受。
I asked her whether she agreed. 我问她是否同意。
He enquired if her parents spoke Spanish. 他问她父母是否讲西班牙语。
I wonder if it's large enough. 我不知道它是否够大。
She didn't say if he was still alive. 她没说他是否还活着。
3. 连接代词引导I don't know who [whom] you mean. 我不知道你指谁。
名词性从句的用法解析在英语语法中，名词性从句是一个重要且常考的知识点。
它在句子中能起到名词的作用，包括主语从句、宾语从句、表语从句和同位语从句。
接下来，咱们就详细地聊聊这些名词性从句的用法。
一、主语从句主语从句就是在句子中充当主语的从句。
比如，“What he said is true”在这个句子中，“What he said”就是主语从句，整个句子表达的是“他说的话是真的”。
引导主语从句的连接词有很多，常见的有 that、whether、what、who、which、when、where、why、how 等。
需要注意的是，为了避免句子头重脚轻，常用 it 作形式主语，而把真正的主语从句放在句末。
例如，“It is important that we study hard”这里真正的主语是“that we study hard”，用 it 作形式主语让句子结构更平衡。
二、宾语从句宾语从句在句中充当宾语。
像“ I know that he is a good student”中，“that he is a good student”就是宾语从句，表明“我知道的内容是他是个好学生”。
宾语从句的引导词与主语从句类似，如 that、whether/if、what、who、which、when、where、why、how 等。
宾语从句的时态要根据主句的时态来变化。
一般情况下，如果主句是一般现在时，宾语从句可以根据实际情况用各种时态；如果主句是过去时，宾语从句通常要用相应的过去时态。
另外，宾语从句要用陈述句语序。
三、表语从句表语从句在句中充当表语。
比如说，“The problem is that I have no money” 这里的“that I have no money”就是表语从句，解释说明“问题”的具体内容是“我没钱”。
常见的引导词有 that、whether、as if ／ as though、because 等。
一、宾语从句的引导词
宾语从句通常由连词that和whether (if)、连接代词或连接副词以及关系代词型what引导：
1. that引导
We believe that he is honest. 我们相信他是诚实的。
The doctor insists that I give up smoking医生坚持要我戒烟。
I suggest that we should go tomorrow. 我建议我们明天走。
I suggested that we should go the next day. 我建议我们第二天走。
We learnt from his letter that he was in Spain. 从他的信里我们了解到他在西班牙。
The seller demanded that payment should be made within five days. 卖方要求5日内付款。
2. whether / if引导
I don't know whether he'll arrive in time. 我不知道他是否能及时到。
I didn't know whether they liked the place. 我不知道他们是否喜欢这个地方。
I'll see whether I can induce him to accept it. 我要看看我是否能劝他接受。
I asked her whether she agreed. 我问她是否同意。
He enquired if her parents spoke Spanish. 他问她父母是否讲西班牙语。
I wonder if it's large enough. 我不知道它是否够大。
She didn't say if he was still alive. 她没说他是否还活着。
3. 连接代词引导
I don't know who [whom] you mean. 我不知道你指谁。
Please tell me which you like. 告诉我你喜欢哪一个。
I'Il do whatever I can do. 我将做我所能做的事。
You can take whichever you like. 你爱拿哪个就拿哪个吧。
We'll do whatever we can to save him. 我们将尽我们所能来挽救他。
Take whichever seat you like. 你要坐哪个座就坐哪个座位。
Give it to whoever you like. 你把它爱给谁就给谁。
You don't know what you are talking about. 你在说什么，你自己也不知道。
Tomorrow at this time we’ll know who is elected. 明天这时候我们就会知道谁当选了。
4. 连接副词引导
He asked why he had to go alone. 他问他为什么必须一个人去。
You don't know when you are lucky. 你身在福中不知福。
I asked how he was getting on. 我问他情况怎样。
He knows where they live. 他知道他们住哪里。
Have you found out how wide the ditch Was? 你了解到那条沟有多宽吗?
I'd like to know when they will let him out. 我很想知道他们什么时候会放他出来。
We didn't know why he had answered in that fashion. 我们不明白他为什么这样回答。
5. 关系代词what引导
She has got what she wanted. 她要的东西得到了。
I want to tell you what I hear. 我想把听到的情况告诉你。
He could not express what he felt. 他无法表达内心的感受。
They did what they could to console her. 他们尽量安慰她。
They thought they could do what they liked with him. 他们以为他们可以对他为所欲为。
【注意】有时介词后可接一个宾语从句(但介词后通常不接that和if引导的宾语从句)：From what you say, he is right. 根据你所说的，他是对的。
有极个别介词(如but, except)可接that引导的宾语从句：
She remembered nothing about him except that his hair was black. 她对他什么都不记得，只记得他的头发是黑的。
比较下面两句用what引导的宾语从句，它们的意思不一样：
He began to think about what he should do. 他开始考虑应当怎样做。
二、宾语从句与形式宾语it
当宾语从句后跟有宾语补足语时，通常在宾语从句处使用形式宾语it，而将真正的宾语从句移至句末：
I think it best that you should stay here. 我认为你最好住这儿。
He hasn't made it known when he is going to get married. 他还没宣布他何时结婚。
She found it difficult to answer the question. 她发现回答这个问题很困难。
He feels it his duty to help others. 他认为帮助别人是他的责任。
He thought it best to be on his guard. 他认为他最好还是要警惕。
He made it a rule to speak in Parliament at least once every session. 他规定自己在议会每次开会时至少发一次言。
I find it interesting talking go you. 我觉得同你谈话很有意思。
I consider it wrong to cheat in an examination. 我认为考试作弊是不对的。
三、连词that的省略问题
引导宾语从句的连词that 通常可以省略：
She said (that) she would come to the meeting. 她说过要来开会的。
I promise you (that) I will be there. 我答应你我会去。
I hoped (that) I would / should succeed. 我曾希望我会成功。
He thinks (that) they will give him a visa. 他想他们会给他签证。
He thought (that) they would give him 3 visa. 他本想他们会给他签证。
I expect (that) the plane will he diverted. 我料想飞机会改变航线。
I expected (that) the plane would be diverted. 我本料想飞机会改变航线。
Everybody knows (that) money doesn't grow on trees. 众所周知，金钱是不会从树上长出来的。
I suggested (that) they should / shouldn't drive along the coast. 我建议他们沿着/ 不要沿着海岸开车。
【注】有时为了强调，that引导的宾语从句可位于句首，此时that不可省略：
That she is a good girl I know. 她是一个好姑娘，我是知道的。
四、宾语从句与否定转移
当动词think, believe, suppose, expect, imagine 后接一个表示否定意义的宾语从句时，其否定通常转移到主语：
I don't suppose that it is true. 我认为那不是真的。
I don't imagine that he will come. 我想他不会来的。
I don't think we need waste much time on it. 我想我们不必在这上面花太多时间We didn't think we'd be this late. 我们没想到我们会到得这么晚。
I don't suppose I'll trouble you again. 我想我不要再麻烦你了。
许老师英语培训。
