by oneself ,on oneself,for oneself 和on one's own,by one's own ,for one's own等等的区别?好像都差不多啊,都怎么用的?有什么固定用法?尽量详细点,

by oneself 独自地,单独 by oneself 单独地,独自地; 单独; 独自,自行; 亲自; Second,sets up the training organized group by oneself.二是由自己来组建教练班子.I can do it by myself ,我自己能做.on oneself不存...