问题描述: on the work和at work区别there后面必须加are吗可以加is吗 1个回答 分类:英语 2014-10-03 问题解答: 我来补答 work on -- 加工,处理,从事,研究on the work 对作业 there is 用于单数,there are 用于复数.There is a book on the table.There are three books on the table. 展开全文阅读