Question

whose,who,whom,which 到底有什么区别啊？怎么用？

Answer 1

who是指“谁”，whose是指“谁的”，whom是who的宾格，也指“谁”，which指“哪一个”。定语从句中的关系代词who，whose，whom，that，which。

指人的疑问代词有：who，whom，whose。

指物的疑问代词有：which。

例句：

Who has been chosen as monitor of your class?

谁被选为你们班的班长。

They all can speak English. 

他们都会说英语。

Whose pronunciation is the best?

谁的发音最好呢？

下面是与其他词语需要注意的点：

1. what和which的区别：what常常泛指“哪一类”；which则是在具体的范围内选择。

What color do you like?

你喜欢什么颜色？

Which color do you like better, red or yellow?

红色和黄色，你更喜欢哪一种？

2. what和who的区别：what询问职业；who询问身份。

What is your father?

这个当然不是问“你父亲是什么”，而是说“你父亲的职业是什么”。

 Who is the woman?

那个人是谁？

 She is my sister.

她是我姐姐。

Answer 2

who是指“谁”，whose是指“谁的”，whom是who的宾格，也指“谁”，which指“哪一个”。
定语从句中的关系代词who，whose，whom，that，which。
who作为从句的主语或宾语
I
know
the
girl
who
is
Tom's
sister.
Do
you
know
the
man
who
I
just
talk
with?
whose充当物主代词
“谁/什么的”
That
is
the
old
man
whose
son
is
our
headmaster.
Don't
sit
on
the
chair
whose
leg
is
broken.
whom
充当宾语，放介词之后
That
is
the
man
with
whom
I
just
talk.
Peter
is
the
boy
from
whom
I
borrow
a
bike.
which
代替事物，主语宾语都可以指代。
I
want
to
visit
the
factory
which
I
worked
in
three
years
ago.