1. by oneself 独自;独立;自动。如:
She did it all by herself. 这是她独立做的。
The machine runs by itself. 这机器自动运转。
2. of oneself 自发地,自动地。如:
The enemy will not perish of itself. 敌人不会自行消灭。
3. to oneself 独自享用。如:
I want a bedroom to myself. 我想一个人要一间卧室。
4. for oneself 为自己
She kept the largest apple for herself.
她把最大的苹果留给自己。
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