himself

1. John fixed the tape recorder by himself.
   约翰靠他自己修理录音机。
2. He flung himself into his work with renewed vigor.
   他又精神抖擞地投入自己的工作。
3. His new house was built by himself, brick by brick.
   他的新房子是他自己一块砖一块砖砌起来的。
4. He's making himself cheap by his unpleasant behaviour.
   他那令人讨厌的行为有损他自己的身份。
5. He made a barrel with staves by himself.
   他自己用桶板做了一只桶。
6. He lives all by himself in that large house.
   他独自一人住在那所大房子里。
7. He said it himself.
   他亲口说的。

him.self

pron.（代词）
That one identical with him:
他自己：同一个人（他him)
Used reflexively as the direct or indirect object of a verb or the object of a preposition:
他自己：人为反身代词，用作动词的直接宾语或间接宾语或介词宾语：
例句：
He congratulated himself.
他向自己祝贺

Used for emphasis:
他本人：作为强调，加强语气：
例句：
He himself found the courage.
他自己找到了勇气

Used in an absolute construction:
用于独立结构中：
例句：
In the black himself, he could offer financial assistance to his cousin.
暗地里，他能给他的表亲提供经济援助

His normal or healthy condition or state:
他的正常或健康状态：
例句：
He`s feeling himself again.See Usage Note at myself
他恢复了健康参见 myself

来源：
Middle English
中古英语
from Old English himselfum
源自 古英语 himselfum
him [him] * see him
him [他（宾格）] *参见 him
selfum [dative of] self [self] * see self
selfum [] self的与格 [自己] *参见 self