这本书是我的英语

This book is mine.

It's my _某物__.上面一句话等于：It's mine.

This book is mine.The book is mine.This is my book.

this is my book.the book is mine.

这是我的 This is mine这个包是我的 This bag is mine这是我的包 This is my bag.做宾语的时候,"是我的"用mine表示做形容词的时候,"我的"用my表示或者简单说,放在句子最后用mine,放在其他东西之前,用my