Enjoy oneself 和Enjoy themselves 是不是同义词组？😉
enjoy oneself 过得快乐，过得快活/是自己玩得开心
While one is on earth , one must enjoy oneself. 人活在世上就要好好享受人生。
enjoy themselves 玩得开心/是（他们）玩得很开心
I get on with it while they enjoy themselves. 当别人在享受快乐的时候我却还在忙我手头的。