名词性物主代词在句中作主语、宾语或表语
Hers is a pretty colorless life.
她的生活是一种相当平淡的生活.（主语）
This is your coat.Mine is in the room.
这是你的外衣.我的在房间里.（主语）
She would shut herself up in her room,Julio in his.
她常把自己关在房间里,朱利奥也是一样.(宾语)
My pen is broken.Please lend me yours.
我的钢笔坏了,请把你的借给我.(宾语)
—Whose book is this?这是谁的书?
—It’s mine.是我的.(表语)
I knew that the house was hers.我知道那房子是她的.（表语）