1.划线提问:There is a book on the desk. what is on the desk? 2.变一般疑:There is a pen on the desk. Is there a pen on the desk? 3.变否定句:There is a map on the wall. There is not a map on the wall. 4.变同义句:There isn' t any water in the bottle. There is no water in the bottle. 5.变复数句:There is a box on the floor. There are some boxes on the floor.