whose与which的用法,以及关系代词是所有格,表所属关系.定语从句

3) whose 表示"某人/物的",of which表示
"某物的", 在从句中做定语:
That's the man whose son is my
pupil.
The room whose window faces south
is her bedroom.
The room of which the window faces
south is her bedroom.
4) which 表示物,在从句中做主语和表语:
I like the picture which was taken
in front of the main building.
. 以Who/Which开始的句子,其后的定语从句中
的关系代词不使用who/which,而代之以that.
Who that knows him would trust him
Which of these buses is the one
that goes to London