Question

there are some boxes in the classroom.(改写为否定句、疑问

、答句)。

Answer 1

否定句：There aren't any box in the classroom.
疑问句：Is there any box in the classroom?
否定回答：No, there isn't.
肯定回答：Yes, there are some.

Answer 2

There are not any boxes in the classroom.
Are there any boxes in the classroom? Yes, there are. / No, there aren't.
[以上细节上的问题自己辨别。]

Answer 3

正确答案：
There aren't any boxes in the classroom.(否定句）
Are there any boxes in the classroom?(一般疑问句）

Answer 4

there are some boxes in the classroom.(改写为否定句、疑问句）
there are not any boxes in the classroom.
Are there any boxes in the classroom?
Yes, there are./ No, there aren't.