1.这是句型not only...but also 的变异,“不但...而且...”.
2.反义疑问句：You are a student,aren't you?就是把动词变成否定的,然后加主语.
3.否定句：You are a student.You are not a student.就是在动词后加not.
4.You are not only a student,but a teacher as well,aren't you?
此句无法否定.