Here is my book. 和This is my book. 有何区别

There are my books .和 These are my books .有何区别?

here is my book, 是给斗灶你我的书，递给你的意思
this is my book，主要强调镇笑书是我的。御销含

There are my books 是说有孙或书，不一定是谁的
These are my books 是强调书橘源是我则伍伍的