to oneself,by oneself,for oneself用法这3个词组的用法和区别是?

倒装though f it is hard to control onesel,i wish i could forget应该是hard to control oneself though it is ,i wish i could forget还是hard though it is to control oneself ,i wish i could forget to oneself,by oneself,for oneself用法这3个词组的用法和区别是? 这两句哪个对?I went to school by oneself yesterday.I went to school yesterday by oneself.I went to school by oneself yesterday.I went to school yesterday by oneself.还是用myself将oneself代替? 用by oneself造句 learn...by oneself是什么意思? all by oneself造句 all by oneself 造句 all by oneself是什么意思 made by oneself是什么意思 on oneself & by oneself有什么区别 for oneself ,by oneself ,of oneself的区别 by oneself ,of oneself,for oneself有什么区别 英语翻译：learn by oneself English learn by oneself 同意词? work by oneself的意思 intrpduce oneself to keep to oneself是什么意思? apply oneself to 致力于