concern oneself about sb,那个oneself 我们代进去的时候是代主语那个人还是宾语呢?

concern oneself about sb,那个oneself 我们代进去的时候是代主语那个人还是宾语呢? 是about oneself还是about sb? concern oneself about/for concern oneself concern oneself with的问题 英语翻译是 study oneself 还是 teach oneself concern oneself with 造句 concern oneself with hurt oneself one是形容词性物主代词还是宾格? 那enjoy oneself 的one呢? help oneself to sth.是省略主语的祈使句吗?to是介词吗?sth是宾语吗? i don't know what happen ,后面的名词性从句what是代主语还是宾语. concern oneself about sth和concern about sth 有什么区别?