高中英语名词性从句详细讲解
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名词性从句
概念
在复合句中起名词作用的从句叫作名词性从句。
种类
主语从句、宾语从句、表语从句和同位语从句。
注:由于名词性从句在句中不同的句法功能(即名词性从句在复合句中,能充当主语、宾语、表语、同位语等。),相应地,名词性从句可以分为主语从句、宾语从句、表语从句和同位语从句。
引导词
类别 功能 例词
从属连词 指起连接作用,不充当从句中的任何成分 that, whether, if
连接代词 既起连接作用,本身又作从句的主语、宾语、表语或定语 who, whom, whose, which, what,
whoever, whatever, whichever
连接副词 既起连接作用,本身又作从句的状语 when, where, how, why,whenever,wherever,however
主语从句
主语从句可直接放在句首,也可用形式主语it代替,而将主语从句后置。
that引导的主语从句
1) that引导的主语从句置于句首(that此时在从句中不充当任何成分,无含义,只起连接作用,不能省略)
That the earth moves around the sun is known to all.
注:从句作主语,谓语动词用单数形式。
2) 在that引导的主语从句中,常用it作形式主语,that引导的真正的主语从句后置,常见的此类句型有:
① It+系动词+形容词+that从句。
常用于这种结构的形容词有:
necessary 必要的 certain 明确的
right 正确的 clear 清晰的
(un)likely (不)可能的 possible 可能的
strange 奇怪的 obvious 明显的
natural 自然的 important 重要的
名词性从句
一.定义:
在句子中起名词作用的句子叫名词性从句 (Noun Clauses)。 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、介词宾语等,因此根据它在句中不同的语法功能,名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
1. His words are true. What he said is true.
2. The dog sensed something good. The dog sensed that there was something good nearby.
3. These are his words. These are what he said.
4. My Maths teacher, Mr He, is a kind person. The news that the plane had crashed made us sad.
二.引导名词性从句的连接词
连词:在从句中不充当成分,只起连接作用 that, 无实义
whether, if 是否
as if \ as though 似乎,好像
连接代词:有词义,在句中担任主语,表语,定语或宾语。 what, 什么 who, 谁
whom, 谁,作宾语 whose, 谁的 which, 哪一个
whatever, whoever……也可以引导。 连接副词:有词义,在句中担任状语。
when ,什么时候 where, 什么地方 why, 为什么 how ,怎么样
how many, how much, how often
三.主语从句
1. 作句子主语的从句叫主语从句。
What he wants to tell us is not clear. 他要跟我们说什么,还不清楚。
1 名词性从句
PART 1
完成以下题目,并分别指出它们是什么从句
1.______ the baby could speak made his parents very happy.
A. That B. What C. Why D. If
2. I wonder ______ you will go shopping or stay at home.
A. that B. if C. whether D. what
3. This is ______ he was often late for school.
A. what B. that C. why D. whether
4. We all know the truth ______ the earth ______ around the sun.
A. if; moved B. that; moves C. why; move D. whether; move
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、介词宾语等。
His job is important. (主语)
What he does is important. (主语)
This is his job. (表语)
This is what he does every day. (表语)
I don’t like his job. (宾语)
I don’t like what he does every day. (宾语)
高考英语名词性从句知识讲解
名词性从句是指在复合句中起名词作用的句子,功能相当于名词词组。
名词性从句在复合句中能作主语、宾语、表语、同位语等,根据在句中的语法功能可分为主语从句、宾语从句、表语从句和同位语从句。
一、主语从句
【定义】
在复合句中,作主语的句子称为主语从句。
常见的连接词:(连接词在句中不能省略)
that, whether, who, what, whatever, whoever, where, when, why, how等。
【用法】
1.连接词 that 引导
That we should learn English well is very important.
主语从句中 we should learn English well句子完整,不缺成分,用that引导,that 不能省
连接词whether,if 引导
whether 引导的主语从句可放句首,也可放句中,表 “是否”
if 引导的主语从句只能引导动词后的宾语
Whether I will go or not depend on the weather.
It remains to be seen whether / if they can finish the task in time.
2.连接代词what, who, which, whose, whatever, whichever,whoever等引导
What matters most is your attitude.
3.连接副词when,where,why,how等引导
How he made it is still unknown.
4.it作形式主语
为了避免句子头重脚轻,通常把形式主语it放在句首,真正的主语放在句子后面。
常见句型:
(1) It is + n.+ that + 句子
It is +(a pity / a shame / a fact …)+ that ...