问题描述： sb.'s sth.和 sth.of sb.哪个正式 1个回答 分类：英语 2014-11-29 问题解答： 我来补答 若是sb,建议用sb's sth,如his friend,避免用a friend of his or his girlfriend,不要用the girlfriend of his.若是物,建议用sth of sth,如the economic developement of China,避免用China's economic developement. 展开全文阅读
