for oneself ,by oneself ,of oneself的区别

题目

for oneself ,by oneself ,of oneself的区别

答案

for 一般来说就是指为了.
for oneself就是为了自己.
by 通常指通过什么方法、手段做什么
by oneself 就是通过自己.
of oneself adv.自动地