1 used when the person who does an action is also affected by it （表示人受自己行为影响）我自己: I saw myself in the mirror. 我在镜子里看见自己。I felt rather pleased with myself. 我对自己相当满意。

2 used to emphasize the person who does the action （用于强调施动者）: I'll speak to her myself. 我会亲自对她说。I'll do it myself (= if you don't want to do it for me). 我自己会做。

1 alone 单独: I live by myself. 我自己一个人住。 ☞ Look at the note at alone. 参看alone的注释。

2 without help 独自；独力: I painted the house all by myself. 我自己一个人给房子上了油漆。