问题描述： He is an old friend of my father.哪里有错? 1个回答 分类：英语 2014-09-19 问题解答： 我来补答 〔误〕He is an old friend of my father.〔正〕He is an old friend of my father's.〔析〕这是英语中的一种习惯用法而不要根据语法去推理.如：This pen is Tom's. 展开全文阅读
