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