This is my English book. It belongs to me. It is mine. That is your English book. It belongs to you, It is yours. Those books aren't ours. They belong to those boys over there. They are theirs. Why do we all have different books? Because we belong to different classes.
    这本书是我的 
　　这是我的英文书。它属于我。它是我的。那是你的英文书。它属于你。它是你的。那些书不是我们的。它们属于那边那些男孩的。那些书是他们的。我们大家的书为什么不一样?因为我们属于不同的班级。   

Teacher: Whose test paper is this?
Bob : It's mine, ma'am.
Teacher: And whose test paper is this?
Bob : It's Tony's, ma'am.
Teacher: And why are your answers exactly the same as his?
Bob : Because Tony has eyes in the back of his  head.
它是我的
老师：这是谁的测验卷?
鲍勃：这是我的，老师。
老师：那么，这又是谁的测验卷?
鲍勃：那是托尼的，老师。
老师：那么，为什么你的答案与他的完全一样呢?
鲍勃：因为托尼的脑袋后面长了眼睛。