impressedas引导非限制性定语从句时与which的区别

2021年1月21日发(作者：永恒的爱英文)
as
引导非限制性定语从句时与
which
的区别

1.< br>当主句和从句语义一致时，用
as
；反之，用
which
来引导非限制 性定语从句

2.
当非限制定语从句为否定时，常用
which
引导。


可句子首或尾

which
只在主句后面。

，
same
修饰先行词时关系词用
as
，介词后用
which

as/which
都可以引导非限制性定语从句。当引导词在从句中充当主语，若从 句
谓语动词是非
be
动词，只能用
which.
其他情况，比如引导 词作主语，谓语动词
是
be
动词，或者做宾语，或者做补语，
as
和
which
均可。

he said he was a king,which surprised me.
只能用
which
he said he was a king,which/as was a lie.
he said he was a king,which/as i don't believe.
若果定语从句移到前面则无论什么情况都用
as
as i believe,.........
as is known to all,..........
as we all know,..........
as is reported,................
as is said,......
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Which

as














1
、语义的区别

当主句和从句语义一致时，用
as
；

He made along speech,as we expected.


当主句和从句语义转折不一致时，用
which
，

He made along speech,which was unexpected.


2
、位置的区别

看到句首一定用
as
，
which
不可能放在句首。

as we all know,
as is mentioned above
as often happens
as is often the case
As is well known
3
、含义的区别

as
有
“
正如
”
的含义，
which
没有此含义。

As is well known
，
Shanghai is a big city
．


Some of the roads were flooded
，

which made our journey more difficult
．



4
、否定句用
which

Tom drinks a lot everyday,wh
ich his wife doesn’t like at all.

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