您好!
形容词性物主代词作定语:
This is my book.这是我的书。
That is your pencil box. 那是你的铅笔盒。
It is his cup. 那是你的杯子。
These are their bags.这些是他们的包。
It is her school bag. 那是她的书包。
名词性物主代词作主、表语:
The book is mine.(作表语)这本书是我的。
This is a pencil. It(作主语) is yours.(作表语)这是一支铅笔,它是你的。
This apple is hers. (作表语)这个苹果是她的。
I have an apple, it(作主语) is red and yours(作主语) is green.我有一个苹果,它是红色的,你的是青色的。
These books are theirs.(作表语)
希望对您有帮助!!