Question

定语从句中，关系副词可以互相转化。when=on+which. where=in+which . why=for+which. 这是如何转化的？

Answer 1

关系副词
和介词加
关系代词
之所以能转换，
是因为它们的性质决定的。
副词在句中可以做状语，
介词短语也可以作状语。
都在句中作状语这一特点是他们能转换的基础。
比如：
He
was
born
in
that
town.
和
He
was
born
there.
两个句子都是说他出生的地方。其中
in
that
town
=
there
.
换成关系词就是
in
which
=where
(其中的which
在原文中就是the
town.
翻译：
这就是他出生的那个城镇。
This
is
the
townand
he
was
born
in
the
town.
=
This
is
the
town
in
which
he
was
born.(which=the
town)
还可以这样翻译：
This
is
the
town
and
he
was
born
there(there
=in
the
town).
=
This
is
the
town
where
he
was
born(where
就是原句中的there).
why
和when
的转换和where的用法类似。只是why用来修饰reason,
when
用来修饰时间名词。

Answer 2

引导词的选择不是单独看先行词是不是表示原因。主要是遵循定语从句中引导词的选择规律。必须是看先行词在定语从句中做什么成分。
why
做状语
this
is
the
reason
why
we
love
our
maths
teacher
that
做宾语
this
is
the
reason
that
he
gave
me.
状语
用关系副词
比如第一句中，先行词在定语从句中做状语所以用why引导，从句中不缺少宾
语。
宾语
用关系代词
而第二句中缺少宾语，所以先行词做gave的宾语

Answer 3

why=for+which基本上没什么可说的了
when=on+which.
where=in+which这就不一定了
at也可以呀
when=on+which.
where=in+which做题时，都不一定对
具体用什么介词，得看句子中的动词，动介搭配
所以背背动词短语就好了
总之吧，关系副词=介词
+
关系代词