怎样区别定语从句和同位语从句

Question

如题所述

Answer 1

你好，
同位语从句和定语从句最大的区别就是同位语从句只是起连接的作用，在从句中不充当任何成分，同位语从句的连接词较多的是用that连接；定语从句的关系代词、关系副词则在从句中会充当一定的成分。
如：He
draws
the
conlcusion
that
she
will
not
come.(that引导同位语从句）
He
told
us
a
story
which /
that
was
about
the
ghost.(which
在定语从句中作主语）
He
knows
the
truth
that
every
one
is
equal
in
front
of
the
law.(that
引导同位语从句）
It
was
the
day
when
I
first
met
him.(when在定语从句中作时间状语）

Answer 2

定语从句却缺成分，同位语从句不缺；同位语从句与先行词同位或等同，定语从句则与先行词是修饰关系。
I
don't
know
the
reason
（why
he
was
so
angry）.中的定语从句缺少原因状语。
I
can't
believe
the
reason
(he
offered){
that
he
got
a
fever}.中定语从句中缺少宾语，而同位语从句是完整的。

Answer 3

同位语从句that不能省，只起连接作用；定语从句修饰限定，与被修饰名词之间一般无逗号，除非非限定定从。