问题描述： the doctor needs operate on him 还是needs to operate? 1个回答 分类：英语 2014-12-02 问题解答： 我来补答 都可以的~意思一样的~只不过need的词性不同前者是实义动词：need to do sth后者是情态动词：need do sth 展开全文阅读
