问题描述: 把Tom is a stu dent.改为否定句 一般疑问句 肯定回答 否定回答 1个回答 分类:英语 2014-12-07 问题解答: 我来补答 Tom isn't a student.Is tom a student? Yes,he is . / No,he isn't. 展开全文阅读