by oneself
解释：单独地, 独自地
词汇搭配：
in a class by oneself 特好(出众）
lift oneself by the bootstraps 依靠自己的努力而取得...
lift oneself by one's own bootstraps 依靠自己的努力而取得...
近义词：
personally 就个人而言
for oneself 为自己
oneself 自己
of oneself 自发地, 自动地...
in oneself 自身
造句：
I answer your question by myself