当前位置: 网校排名> 新东方在线> 高中英语语法知识点 名词性从句基础
新东方在线 高中教育培训

高中教育

发布时间: 2016年06月06日

高中英语语法知识点 名词性从句基础

 

高中英语语法知识点 名词性从句基础:

    一、名词性从句的基本概念

  在复合句中起名词作用的从句叫名词性从句,包括作主语从句、表语从句、宾语从句和同位语从句。

  (1)主语从句

  就是在复合句中作主语的从句。主语从句常用that, whether, who, whom, whose, what, which, when, where, how, why, whatever, whoever等引导。如:

  Whether he will be able to come remains a question. 他是否来还是问题。

  That China is a great socialist country is well known. 众所周知,中国是一个伟大的社会主义国家。

  注:为避免头重脚轻,使句子平衡,常用it作形式主语,而将主语从句后置。如上述第二例常说成:

  It is well known that China is a great socialist country.

  但是,由连接代词what, whatever, whoever等引导的主语从句一般不能用形式主语。如:

  What he found surprised me greatly. 他的发现使我非常吃惊。

  Whoever is finished may rest. 凡是做完工的人都可以休息。

  (2)表语从句

  就是在连系动词之后作表语的从句。引导表语从句的连接除与引导主语从句的连接词外,还有as if, as though。如:

  The question is whether he is able to do it alone. 问题是他能否单独做这件事。

  It looks as if (though) it is going to snow. 天好像要下雪似的。

  注意:要区分以下句式:

  1. that’s why 结果;that’s because 原因。2. the reason why /for…is that…

  He is absent. That’s because he is ill. 他缺席,这是因为他生病了。

  He is ill. That’s why he is absent. 他病了,这就是他缺席的原因。

  The reason why he is absent is that he is ill. 他缺席的原因是他生病了。

  (3)宾语从句

  就是在复合句中作宾语的从句。引导这宾语从句的连接词与引导主语从句的连接词基本相同。如:

  They didn’t say which they wanted. 他们没有说他们想要哪一个。

  I am sure (that) no harm will ever come to you. 我肯定你永远不会受伤害。

  I was surprised at what has happened.我对发生的事感到惊讶。

  注意:当think, believe, suppose等的疑问式后面跟连接代词或连接副词引导的宾语从句时,习惯上将这些连接词置于句首,即“连接代/副词 do you think /believe /expect 宾语从句的其余部分?”如:

  Who do you think is the best player this year? 你认为今年谁是最佳运动员?

  What do you suppose you will do after school? 你想放学后干什么?

  (4)同位语从句

  就是在句中作同位语的从句。它通常有放在thought, idea, news, word(=news), plan, doubt, question, fact, suggestion, belief等抽象名词的后面,说明这些词的具体内容或含义。同位语从句大多由that引导,也可由whether, how, when, where, why等引导,但不能由which引导。如:

  The idea that the earth is round is not a new one. “地球是圆的”这种观点并不新鲜。

  He must answer the question whether he agrees to it or not. 他必须回答他是否同意此事这们一问题。

  I have no idea when he will set out. 我不知他什么时候出发。

  注:有时,同位语从句并不紧跟在它所说明的词的后面。如:

  The whole truth came out at last that he was a wolf in sheep’s clothing. 真相终于大白了,他原来是一只披羊皮的狼。

 

相关链接:

高中辅导 
高一辅导 
高二辅导 
高考辅导 
学而思网校 

×
Baidu
map