人教高中英语第一轮复习：复合句.docx

复 合 句
概念：复合句又称主从复合句，由一个主句和一个或多个从句构成，主句为句子的主体，从句不能独立，只能做句子的一个成分。
从句担任什么句子成分，这个从句就叫该成分的从句。
根据从句在句中的作用，可分为名词性从句、定语从句和状语从句。
一、名词性从句
名词性从句相当于名词，可作主句的主语、表语、宾语和同位语。因此，名词性从句可分为主语从句、表语从句、宾语从句、同位语从句四种。 (从属连词：用来连接主句和从句的连词称为从属连词)
从 属 连接词：that/whether/if 不充当从句的任何成分
连 词 连接代词：who/whom/whose、what、which当主/宾/表/定语
(标签) 连接副词：when/where/how/why 充当从句的状语
主语从句
由连接词引导
eg: That the earth turns around the sun is known to all.
Whether he will come or not is not yet known.
由连接代词引导
eg: Who will go is not important.
What we need is more practice.
由连接副词引导
eg: Where the meeting will be held hasn’t been decided.
When he will return is an important question.
另外也可以用it作形式主语，主语从句作真正主语放句子后面
eg: It’s a pity that she has made such a foolish mistake.
It’s reported that three people were killed in the traffic accident.
It doesn’t matter whether he will come or not.
表语从句
由连接词引导
eg: The question is whether we should ask them for help.
由连接代词引导
eg: China is not what it used to be.
由连接副词引导
eg: That is why he didn’t pass the exam.
表语从句还可以由as if /as though/ as/because来引导
eg: It looks as if it were going to rain.
Things are not always as they seem to be.
It’s because you eat too much.
宾语从句
宾语从句在复合句中作及物动词、介词、形容词的宾语。
I think that watching TV too much is bad for people’s health.
I wonder if you can do me a favour.
I wonder why he refused my