它自己用英文怎么说

"Itself" 英文是 "itself"，在句中作主语时用作形式主语，表示自己，是名词性质语。

例句:

The problem solved itself. (问题自己解决了)
The machine can operate itself. (机器能自己操作)
The company has a good reputation for itself. (公司有自己良好的声誉)