mine为名词性物主代词，相当于名词，意思=我的xx，例如：That book is yours.This is mine.那本书是你的（书），这本是我的（书）。me是I的宾格形式，常放在介词或动词后做宾语。
mine和me的具体区别
具体语境下，my XX=mine，例如：
This is my book.=This book is mine.
Can you help me ?Please look at me.
引用相关人称变换
一种是直接引用别人原话，书面上通常放在引号内，称为直接引语，另一种是间接引述别人的话，称为间接引语。例如：
He said, “Everybody is here.”
他说：“大家都到了。”
He said that everybody was there.
他说大家都到了。
直接引语转换成间接引语时，间接引语多为带宾语从句的主从复合句。转换过程中应注意下列变化：
Cathy asked, “Where have you been, Tom?”
凯茜问：“汤姆，你去哪儿了?”
Cathy asked Tom where he had been.
凯茜问汤姆他去哪儿了。
Mother said, “I have made a new dress for you.”
母亲说：“我为你做了条新裙子。”
Mother said that she had made a new dress for me.
母亲说她为我做了条新裙子。
Uncle Wang said, “I have bought a book for you.”
王叔叔说：“我给你买了一本书。”
Uncle Wang said he had bought a book for me.
王叔叔说他给我买了一本书。
