There are som signs on the wall改为否定句是什么?还有一般疑问句怎么改?

问题描述:

There are som signs on the wall改为否定句是什么?
还有一般疑问句怎么改?

There aren't any signs on the wall.

Are there any signs on the wall?

否定句:There aren't any sighs on the wall.
一般疑问句:are there any sighs on the wall?