雅思和托福语法中同位语从句和定语从句的区别?

Question

如题所述

Answer 1

For example:
The news that the number of privatevehicles will be restricted in urban areas is true.
‚The news that he obtained from thenews agency is true.
先看看这两个句子中，哪一个是定语从句，哪一个是同位语从句？
第一个是同位语从句，第二个是定语从句。这两个从句容易弄混淆是因为两者都可以用that做引导词，其次that引导的从句都是放在名词或者代词之后。
我们可以从两个方面进行区别：第一、从意义方面：定语从句是起到修饰限定的作用，而同位语从句主要是解释说明名词或者代词的具体内容，所有名词都可以有定语从句，但是不是所有词都能够有同位语从句，一般同位语从句所解释的都是一些本身词意比较抽象的，例如，fact，news以及suggestion等。第二、that引导词在定语从句中作句子成分，而在同位语从句中不做任何句子成分，以上面的例句为例，that在第二个句子中代替先行词news在定语从句中做obtained的宾语，而在同位语从句中，已经有相应的主语（number），谓语（restrict）了。

Answer 2

同位语从句是对一个抽象名词的具体解释,idea,thought,culture，news等，由that，whether引导。
例如：We heard the news that our team had won.
但是在某些名词(如demand, wish, suggestion, resolution等)后面的同位语从句要用虚拟语气
例如：hey were faced with the demand that this tax should be abolished(should可省略)

定从很难一两句话说清楚的.1:要有先行词，判断先行词在句中做什么成分，主语还是宾语。2.关系代词，关系副词来代替这个先行词。
关系代词：who，whom, that, which, whose 关系副词：where,when,why关系副词在定语从句中做状语等于介词+which。
eg:This is the house in which (where) I lived last year.
This is the reason for which (why) he was late for school.
That's the day on which (when) I met him in the street.