否定
（1)There is not a computer in your study.
(2)There is not a pen and two earses in the pencil -box.
(3)there is not some rice on the table.
(4)There are not so many books on the shelf.
一般
1)is there a computer in your study.
(2)is there a pen and two earses in the pencil -box.
(3)is there some rice on the table.
(4)are there so many books on the shelf.
特殊
1)There is a computer in your study.
how many computer in your study?
where is the computer?
what is in your study?
(2)There is a pen and two earses in the pencil -box.
how many pens and earses in the pencil -box.
where are the pen and the two earses
what are there in the pencil -box?
(3)there is some rice on the table.
how many rices on the table?
where are those rices?
what are those on the table?
(4)There are so many books on the shelf.
how many books are there on the shelf?
where are those book
what are those on the shelf?