秦秦的回答：

to myself－”对我自己” e.g. I talk to myself.我对自己说． by myself－”自己一个人做” e.g. I did the homework by meself.我是自己做的作业． for meself－”为自己” e.g. I bought a dress for myself.我给自己买了件裙子．

李夏琳的回答：

to myself－”对我自己” e.g. I talk to myself.我对自己说． by myself－”自己一个人做” e.g. I did the homework by meself.我是自己做的作业． for meself－”为自己” e.g. I bought a dress for myself.我给自己买了件裙子．

张家硕的回答：

to myself－”对我自己” e.g. I talk to myself.我对自己说． by myself－”自己一个人做” e.g. I did the homework by meself.我是自己做的作业． for meself－”为自己” e.g. I bought a dress for myself.我给自己买了件裙子．