2021年1月23日发(作者：ecfa是什么意思)
只能用
that
的情况：

1.

先行词为不定代词
all, much, everything, nothing, none, the one
2.

先行词被
only, any, few, little, no ,just, very, one of
修饰

3.

先行词被序数词或就是序数词时

4.

先行词是最高级

5.

先行词既是人又是物

6.

先行词是次数时
two, ten, a hundred
7.

两从句一个已用
which
，另一个用
that,
避免重复

8.

疑问词是
who/which,
宜用
that
9.

主句
there be
10.

被修饰部 分为表语
or
关系代词本身是定从的表语时：主
+be+n./adj.
主
+
系
+adj.

只能用
which
的情况：

1.

介词后

2.

非限制性定从

3.

当关系词后带插入语时


只能用
who
的情况
:
1.

先行词为
anyone, anybody, those, all, one, ones, they, he, people
2.

非限制性定从

3.

There be

先行词为
way
时，定从常用
that, in which, how, that. that
可省


As
的用法：

正 如
……As
是关系代词，代替整个句子，在后面的句子中充当动词
know
的 宾语。

He was a foreigner, as I know from his accent.
如为限制定从，多用于
the same…as, such…as…, as many/much as, so as

I have the same book as you (have).
Her attitude to him was quite the same as it had always been.

I live in the same house that he used to live in.






The same
…
as
同类不同个

I’m wearing the same shirt as you were yesterday.

The same
…
that
同类同个



非限制定从中，
as
常至于句首。

As we all know, smoking is harmful to one’s health.

as
做主语

as is well known (to us)
as was
mentioned before
as could be expected
as could be judged from her eyes
as may be seen from the book
as is recounted in his stories