1． 用以加强语气，表示亲自。
If one wants knowledge of a skill, one must take part in it oneself.
He went there himself the day before yesterday.
2. 与典型介词搭配，构成固定短语，表达特定含义。
1) (all) by oneself 单独地
When I was young, I had to make a living all by myself.
Would you go there by yourself?
2) to oneself 独自享用
When he eats in a restaurant, he likes a table to himself.
3) for oneself 为自己；独自
One shouldn’t live for himself alone.
You must find it out for yourself.
4) of oneself自动地
The door opened of itself.
5) between ourselves私下里
Just between ourselves, I don’t think much of him.
6) in oneself本身
The materials in themselves were not poisonous.
7) beside oneself喜怒时发狂
She was beside herself with joy.
8) by itself自然地
The machine will start by itself in a few seconds.
3. 与典型动词搭配，构成固定短语。
1) be not oneself身体不好
I’m not quite myself today.(I’m unwell.)
2) enjoy oneself玩得很痛快
3) help oneself to sth. 随便吃
Please help yourself to some fish.
4) teach oneself sth.自学
When he was young, he taught himself advanced mathematics.
5) accustom oneself to 习惯于
He quickly accustomed himself to this new way of life.
6) devote oneself to致力于
I am determined to devote myself to the cause of education.
7) adapt oneself to适应
She quickly adapted herself to the new climate.
8) adjust oneself to调整；适应
The body quickly adjusts itself to changes in temperature.
9) behave oneself举止得体
Please behave yourselves.
10) dress oneself穿衣服
He is too young to dress himself.
11) seat oneself就坐
He seated himself in the chair and began to read the novel.
12) make oneself heard / understood / seen / known / believed让自己被（别人）听见/听懂/看见/认识/相信
He raised his voice to make himself heard by all.
13) find oneself无意识中发现自己
At last, we found ourselves in a pleasant park with trees providing shade and sat down to eat our picnic lunch.
14) express oneself清楚表达自己的意思
He is still unable to express himself in English.
15) talk to oneself自言自语
16) come to oneself 苏醒
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