by oneself什么意思 它和alone一样吗?

on oneself 和 by oneself意思一样吗? by oneself和alone是同义词组吗? alone和by oneself的区别 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 sb alone =leave sb by oneself吗? do sth by oneself什么意思 by oneself和on oneself有什么区别？ waiting for it alone by oneself alone by oneself missing for you. on one's own,personally和by oneself那几个和by oneself意思相同的? believe in oneself和believe oneself一样吗? oneself与by oneself有什么不同