learn by oneself

learn...by oneself是什么意思? learn by oneself learn by oneself 同意词? 英语翻译：learn by oneself English sb learn sth by oneself “learn by oneself English”和“learn English by oneself”哪个是对的? learn sth（by) oneself中的不要什么时候by可省去 on oneself & by oneself by oneself/for oneself to oneself,by oneself,for oneself用法 It's ______ more improtant to learn how to study by oneself 自学除了 learn by oneself 还能怎么说?举个句子吧最好