将来进行时的there be句型的肯定句、否定句、一般疑问句(同一句句子)

问题描述:

将来进行时的there be句型的肯定句、否定句、一般疑问句(同一句句子)
快回答啊

There are 2 books on the desk.肯定句
There are not 2 books on the desk.否定句
Are there 2 books on the desk?一般疑问句