内容正文:
Unit1
表语从句
1
CONTENTS
定义
虚拟语气
系动词
引导词
练习
2
part 1
定义
3
什么是表语?
I am a student.
He is selfish .
红体字有什么特点呢?
位置:系动词后(be)
形式:往往是名词、形容词
用来说明主语的身份、特征和状态
主+系+表
什么是表语从句?
1. My trouble is who I can turn to for help.
2.The fact is that we have lost the game.
在主从复合句中
用一个句子充当表语叫表语从句
用一个句子充当表语叫表语从句
定义
位于主句的系动词之后
对主语进行解释说明,使主语的内容具体化。
位置和作用
主语+系动词+ 引导词 +表语从句
结构
6
part 2
系动词
7
1
2
3
4
5
表状态:
appear, seem, remain, keep, stay
be动词
表证明:
turn out, prove
感官动词:
look, sound, feel, taste,smell
表变化:
become, get, turn,
grow, go, fall
8
part 3
引导词
9
引导词
连词
关系代词
关系副词
在从句中不作成分,只起连接作用
在从句中作主宾表定语
在从句中作状语
that, whether, as if/as though, because
what, which, who(m), whose,
whatever,whichever, whoever
when, where, why, how
除that外,其他引导词都有词义
10
The fact is that he doesn’t really try.
The trouble is that I have lost his address.
It seems that he was late for the train.
1. 由that引导,that本身没有词义,在句中只起连接作用,不充当句子成分。
that引导表语从句时,主句的主语常常是些抽象名词,如question, trouble, problem, result, chance, suggestion, idea, reason等。
11
1. The question is ______________________
2. What I doubt is _______________________
whether it is worth doing.
whether we can beat them.
2. whether 在句子中不充当任何成分,但具有“是否”的意义。注意:if不能引导表语从句。
The question is what caused the accident.
That mountain isn’t what it used to be.
The problem is whose work is the best.
The question is which of us should go.
The question is who(m) we should trust.
3. 由连接代词who, what, which, whom, whose, whatever, whoever, whomever, whichever 引导表语从句,并在句中作主语、宾语、表语、定语。
4. 连接副词 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。
This is why she was late for the meeting.
The question is how he did it.
That is where he was born.
That’s where I first met her.
5. as if/though引导表语从句时,在句子中不充当任何成分,但有意义。译为:似乎,好像。
He looks as if he were a rich man.
It sounds as if someone is knocking at the door.
as if/as though引导的从句如果是事实,用陈述语气;
如果与事实不符,就用虚拟语气
主句一般现在时,从句就用一般过去时(be动词用were);
主句是一般过去时,从句用过去完成时 )。
6.because引导的表语从句常用于“That's be