很高兴为你解答.myself 通常都是做同位语,强调“ 亲自”,等于 in person,而 by myself 强调的是“靠自己”,等于 on one's own .例如：I went there myself 我亲自去的那里.I learn English all by myself.我全靠自己...懂了，谢谢！！不用谢！