Question

定语从句的成分是什么？从句和主句各是哪一部分?

Answer 1

定语从句
用来说明主句中某一名词或代词（有时也可说明整个主句或主句中一部分）而起定语作用的句子叫作定语从句。
一．词引导的定语从句
1.
关系代词用来指代先行词是人或物的名词或代词
句子成分
用于限制从句或非限制性从句
只用于限制性从句
代替人
代替物
代替人或物
主语
Who
which
that
主语
Whom
which
that
宾语
Whose(=of
whom)
whose(=of
which)
例1：This
is
the
detective
who
came
from
London.
例2：The
book
which
I
am
reading
is
written
by
Tomas
Hardy.
例3：The
desk
whose
leg
is
broken
is
very
old.
例4：This
is
the
room
that
Shakespeare
was
born
in

Answer 2

该句中the
doctor
is
in
the
room
是主句，而who
you
are
looking
for
是修饰doctor的成分，是从句，句中的who即为从句的引导词……在定语从句中还有that,which,what,whom等均能作引导词连接主句与从句……