by oneself 和 for oneself 的区别还有 比如自己亲自做某事 到底是 用 by 还是for?但是我们学校学的 亲自去看看 是 go and see it for yourself?

think by oneself和think for oneself 的差别 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, to oneself,by oneself,for oneself用法这3个词组的用法和区别是? on one's own,personally和by oneself那几个和by oneself意思相同的? by oneself 和on one's own有什么区别? for oneself ,by oneself ,of oneself的区别 by oneself ,of oneself,for oneself有什么区别 for oneself是否是”独自,一个人”的意思?如果是,它和by oneself如何区分? leave one by oneself给个例句 alone by oneself missing for you. One should not live for oneself alone. by oneself/for oneself独立的单独的做某件事情by oneself和for oneself都可以吗for oneself可不可以表达为为了某人自己是两个都可以?即可以互换?有没有什么区别?for oneself可以表达为为了某人自己 那两 do sth. by oneself 和do sth, oneself ? do sth oneself和do sth by oneself用法区别 for oneself 和 of oneself 有什么区别 alone和by oneself的区别 by onself 和oneself的区别 on one's own by oneself 有什么区别?