There are four windows in our classroom.（改为否定句） There is a girl under the tree. 改为一般疑问Jane and Lily are （in the hall）.（对括号提问）There are （four hundred） books in the reading room.（对括号提问）
问题描述：
There are four windows in our classroom.（改为否定句） There is a girl under the tree. 改为一般疑问
Jane and Lily are （in the hall）.（对括号提问）
There are （four hundred） books in the reading room.（对括号提问）
答
There aren't four windows in our classroom.
Is there a girl under the tree ?
Where are Jane and Lily ?
How many books are there in the reading room ?
答
1,There aren't ……。
2,Is there……？
3,Where are Jane and lily?
4,How many books are there in the reading room?
答
1、There aren't four windows in our classroom.2、Is there a girl under the tree?3、Where are Jane and Lily ?4、How many books are there in the reading room?