This is the mount of which the top is covered with snow all the year round.

题目

This is the mount of which the top is covered with snow all the year round.
请问这里的of which为什么不能换成whose?还有就是of which在句子中做什么成分?我是说在从句中,

答案

这句话相当于This is the mountain which the top of is covered with snow all the year round.因为这里mountain是作为the top of的宾语出现的,因此不用whose.如果要改,可以这样改：
This is the mountain whose top is covered with snow all the year round.