怎么区分名词从句和定语

Question

如题所述

Answer 1

回答如下：
1. 顾名思义，名词从句就是相当于名词的从句。名词从句包括主语从句、宾语从句、表语从句和同位语从句，其作用就是作句子的主语、宾语、表语和同位语。主语从句也可以移到主句后面，作逻辑或真正的主语，而用it作形式主语。例如：
That he is ill (主语从句) is true.
= It (形式主语) is true that he is ill ( 主语从句).
Whether(主语从句) he will go is not sure.
= It (形式主语)is not clear whether he will go (主语从句).
The question is how we can have him know it (表语从句).
He told us what we should pay attention to (宾语从句).
We are discussing the problem how we can deal with the air pollution here ( 同位语从句).
2. 用来修饰名词的词语或从句叫定语。可以修饰名词的词语或从句有名词、形容词、有些副词、介词短语、分词短语、动名词、不定式、定语从句、指示代词、形容词性物主代词等。凡是短语作定语时，都要后置，单个词一般前置(后置的单个分词通常用于强调)，还有个别形容词必须作后置定语，如alive等。分词作定语时，相当于形容词; 动名词作定语时，表示用途。例如：
My car key is missing.
Mary is her good friend.
The villagers here live in poverty.
I know that man under the tree.
The boy reading in the room is his son. They like the interesting story.
The injured worker has been sent to the hospital.
The bridge built 50 years ago has been pulled down.
The swimming pool ( 相当于The pool for swimming )only opens on Sunday.
The bridge to be built next year will be 80 metres long.
There are two girls who are quarrelling outside.