我就以“我会亲自去做这件事的”为例吧. I will do it by myself 口语可以缩略为I'll do it myself 还有一种不用oneself的说法 I will do it on my own 另外 One oneself does sth.是可以的. 举两个例子 “你应该亲自参加这个实验,而且还要以实验一部分的身份参加.” You yourself should take part in this experiment as a component. “他手下的杀手都失败了,所以他只好亲自动手暗杀了那个特工.” He himself assassinated that agent because all his stupid killers failed.