用 there be 句型介绍房间,如：
This is my room.It's not very big.There is a bed in it.Beside the bed,there is a desk and a chair.There are some books,a lamp and a computer on the desk.There is a bookshelf between the desk and the bed.There are lots of books and some CDs on the shelf.My room is always clean and tidy.I like it very much.