1.使用双重属格应注意：of 前面的名词一定要有一个a an , two, any, some, several, no, few, another,或 this, that, those修饰语(不可以是one 或the)
I like to read a novel of Lu Xun’s
Do you know any friend of my husband’s
Two classmates of my sister’s will come to join us.
That car of Peter’s is always breaking down.
It’s another book of my father’s
注意:
I like books of your brother’s错
I like the book of your brother’s 错
2.of 前面的名词不能是专有名词
This is Joan of his auntie’s.错
3.of后面的名词必须是特定的
These books of my friend’s are interesting
不说：These books of a certain friend’s are interesting.
4. of后面的名词必须是指人的词
不说：It is leaf of the book’s.
5.a (this, some) + 名词 + of +’s所有格表示部分概念，也表示某种感情色彩
He is my father’s a friend.错
He is a my father’s friend 错
He is a friend of my father’s.对
I like that watch of your brother’s.
