1、acquit oneself表现

2、by oneself单独；独自；独力

3、be sure of oneself自信（自我肯定）；有一种力量叫自信；有自信

4、for oneself为自己；替自己，为自己

5、help oneself自取，自用

She is interviewed on the radio but acquit herself rather badly.

她受到电台采访，但表现得很差劲。It's more satisfying to do the job by oneself.

独自一人做这项工作更让人感到满足。

Self-confidence is to be sure of oneself and one's abilities.

自信就是肯定自己以及自己的能力。It's so easy to feel sorry for oneself

人很容易为自己感到委屈。

Nobody can help me if I don't want to help oneself.

如果我自己不想帮自己，没有人能帮我。