问题描述： by oneself与for oneself 有什么区别?最好造个句说明, 1个回答 分类：英语 2014-12-05 问题解答： 我来补答 I will do the homework by myself.我会自己完成作业.That pen is for you, this pen is for myself.那支笔给你,这支笔给我自己. 展开全文阅读
