如何判断英语的定语从句的从句成分是主语还是宾语还是定语或者其他?

如何判断英语的定语从句的从句成分是主语还是宾语还是定语或者其他?
Do you know the man who is talking
with your mother?
Mr.Smith is the person with whom I
am working
The boy (whom) she loved died in the
war..
I like those books whose topics are
about history.
The boy whose father works abroad is
my deskmate.
A plane is a machine that can fly.
She is the pop star (that) I want to see
very much.
The book (which) I gave you was
worth $10.
The picture which was about the
accident was terrible.
He is such a person as is respected by
all of us.
This is the same pen as I lost
yesterday.
以以上的句子为例,如何判断呢?