There are two pens and a book on the desk.    
There is ......in the     .造句
    1. There is a book in his hand.
   There is a  pen in the pencil-box.
   There is a desk in my room.
   注: There is + (a/ an)+ 可数名词单数 + 地点
2. There is some milk in the glass.
   There is a piece of bread in the plate.
   There is some water in the bottle.
注:  there is + 不可数名词 + 地点
3. There are forty desks in my classroom.
   There are some books in the desk.
   There are some pictures in the classroom.
注: there are + 可数名词复数 + 地点
如果有两个或两个以上的名词,看第一个名词决定用is/ are ( there be 句型的就近原则)
如: There is a book and two pens on the desk.
    There are two pens and a book on the desk.2010-05-22
There is a ball in the backpack2010-05-22