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高中英语名词性从句知识讲解以及练习题附答案一、名词性从句概述名词性从句是一种充当名词作用的从句，通常在主句中作主语、宾语、表语或同位语。
它通常由引导词（如that, whether, if, who, whom, whose, which, what等）引导，并且从句中含有一个主语和谓语。
名词性从句的种类有很多，包括主语从句、宾语从句、表语从句和同位语从句等。
下面我们将逐一介绍这些从句。
二、主语从句主语从句作为一个名词，通常位于句首，是一个句子，主要作用是作为主句的主语。
引导主语从句的词：What (什么)；Whether (是否)；If (是否)；That (那个)。
例句：What he said is true. (他说的是真的。
)Whether it will rain tomorrow is uncertain. (明天是否会下雨还不确定。
)If you go, I will go too. (如果你走，我也跟着走。
)That he is coming is good news. (他来的消息是好消息。
)注意：主语从句的谓语动词通常要用单数形式。
What引导的主语从句通常用来表示“事物”的概念。
三、宾语从句宾语从句是一个名词，通常位于主句的动词后面，作为主句的宾语。
它可以由常见的宾语从句引导词引导，例如whether, if, that, who, whom, whose, what, when, where, how等。
引导宾语从句的词：Whether (是否)；If (是否)；That (那个)；Who (谁)；Whom (谁)；Whose (谁的)；What (什么)；When (何时)；Where (何处)；How (如何)。
例句：I know that he is coming. (我知道他要来。
)I wonder if he is telling the truth. (我想知道他是否说了真话。
高二英语名词性从句知识精讲高二英语名词性从句知识精讲人教版一. 本周教学内容：第五单元语法：名词性从句1. 名词性从句2. 同位语从句3. 同位语从句与定语从句的辨析4. what; whatever; whoever; where引导的名词性从句5. it 作为形式主语的句型二. 知识总结与归纳：（一）名词性从句的结构：名词性从句起名词作用在句中做主语，表语，宾语和同位语构成：主语从句；表语从句；宾语从句和同位语从句。
引导名词性从句的连词有三类：that；whether; wh-疑问词。
例句：1.The result of this French influence was that the English language ended up with many French words such as table, animal and age.2. They realize that it is of great value to record and teach them to the younger generation.3. I want to tell the reader that these hills and fields are most beautiful, with many small and clear rivers, and rich fields bearing fruit and grain.4. Some people feel that Wales is an ancient fairy land.5. What interested him was that the whole world had been mapped 70 years before Columbus.6. What is certain that the book has made many people think about the achievements of Zheng He and other Chinese captains and their role in discovering the world.7. That most of these are now threatened and may disappear is a serious matter to the people in Britain.8. This gave him the idea that the Chinese perhaps first discovered America.（二）同位语从句在名词idea; fact; news; thought; suggestion/advice; problem; proof等词后面带上that+陈述句这部分从句解释了前面的那些名词所指的内容，与那些名词起着同等作用的句子成分，叫同位语从句。
高二英语名词性从句通用版【本讲主要内容】名词性从句：1. 主语从句，表语从句，宾语从句和同位语从句的结构2. 名词性从句的连词及用法3. It在名词性从句中的用法【知识总结归纳】（一）名词性从句起名词性作用在整个句子当中充当以下作用：1. 做主语，成为主语从句：例：That most of these are now threatened and may disappear is serious matter to the people in Britain.2. 做宾语构成宾语从句：例：They realise that it is of great value to record and teach them to the younger generation.3. 做表语构成表语丛句：例：The result of so much French influence was that the English language ended up with many French words such as table, animal and age.4. 在idea , plan , thought , fact , news, hope, possibility agreement等名词后面解释这些名词的内容，做这些名词的同位语构成同位语丛句。
例：The idea that England stands for Fish&Chips, Speakers’ Corner, Big Ben and the Tower of London is past.（二）名词性从句的连词：名词性从句必须有一个连词引导。
根据名词性从句表达的内容使用不同的连词。
1. 从句表达陈述的内容用连词that引导：例：（1）That it is a competition between two of the oldest and most famous universities in the world may be new to you.（2）The result that Oxford beat Cambridge by afoot in 2003 surprised many.（3）Do you know that there is a boat race between Oxford and Cambridge every year ?（4）One of the biggest chanllenge is that what Menzies believes to be America on the map is, perhapes, Antartica.（5）The reason seems to be that different periods are related to different kinds of achievement.注意：在宾语从句中that可以省略。
名词性从句详解名词性从句包括主语从句、表语从句、宾语从句、同位语从句。
其关联词有连接词that，if，whether；疑问代词who，what，which和疑问副词when，where，how，why等。
一.语法讲解1.主语从句主语从句在句中做主语。
它可以放在主句谓语动词之前，但多数情况由it作形式主语，而把主语从句放在主句之后。
例如：Who did that is known to all.It is interesting that you should like him.2.表语从句表语从句在句中作表语，位于主句中的系动词之后。
如：The question is who can complete the difficult task.表语从句不能用if引导，但可用as if引导。
例如：He looked as if he was going to cry．3.同位语从句同位语从句跟在名词后面，进一步说明该名词的具体内容。
引导同位语从句的名词主要有fact，news，promise，idea，truth等。
连接词用that（不用which），及连接副词how，when，where，why等。
例如：His delay is due to the fact that the car went wrong halfway．The news that our team has won the match is true.She asked the reason why there was a delay．4.宾语从句1.宾语从句在句中作及物动词或介词的宾语。
例如：We can learn what we did not know．He will talk to us about what he saw in the U.S.如果主句的谓语动词是及物动词make，find，see，hear等，则把宾语从句置于宾语补足语之后，用it作为形式宾语。
（完整版）高考英语【名词性从句】专题十名词性从句第一节基本知识与基本概念【什么是名词性从句？】顾名思义，主语从句在句子中作主语。
有时本身出现在主语的位置上，也有时出于句子结构的考虑退到句子的尾部，前面用形式主语it代替。
从句作主语时，谓语动词一般为单数形式。
如: What I saw was beyond any verbal description.That his hair was turning grey worried him a bit.Why the company denied the contract is still unknown.When and where the government will build a city square is under discussion.It is pretty annoying that a small part of the machine is missing.It remains to be seen whether the new novel will be well received.【宾语从句】在句子中作宾语的从句就是宾语从句。
由于这是同学们接触比较早的一种从句，应该问题不大。
所以在近年的高考题中，以宾语从句的知识作为考点的题目较少。
但是，宾语从句也有自己的特殊情况，如介词的宾语，形容词的宾语，宾语从句提前和并列的宾语从句等现象。
如：We assumed that there would be more than 100 guests.He told the police in detail what he saw and heard.Nobody is sure what humans will look like in a million years.That will depend on whether they can get the chance.Whether I will have the time I am not sure at the moment.The conductor complained that we were not gifted in singing and that he would never come again.【表语从句】表语从句的最重要脸谱就是它们应该出现在系动词的后面。
