any of 和 any 有什么區別：
Tom rarely writes to any of his friends.
這兒的any of his friends 和 any his friend 有哪些差別?
any沒有名詞解釋阿,為何會有所在關系的of?
any與his都是中位限定詞，中位限定詞相互抵觸。即一個名詞前最多僅能有個中位限定詞。
因此，我們可以說 any friends, his friends, 但是不能說any his friends 或者 his any friends.
any of his friends中，any是代詞做主語，of his friends做后置定語，表明整體與部分關系。
any books 任意書籍 (書籍沒有限制范疇）
any of the books （在限制范疇的這些書里的任意一本）