怎样让普通的英语句式变为否定句(he is a student
问题描述：
怎样让普通的英语句式变为否定句(he is a student
答
He is not a student.
陈述句变否定句只需要在系动词be(is am are was were),助动词（do does did）以及情态动词等后加上“not”就可以了