there are seven books in my schoolbag （对seven提问）

there be结构的特殊提问句
There are seven books in my schoolbag.
(对数字提问)How many +名词复数(数字后面)+are there+地点状语?
(对主语提问)What's +地点状语?
(对地点提问)Where+be+主语?
例:
(对数字提问)How many books are there in your schoolbag?
(对主语提问)What's in your schoolbag?
(对地点提问)Where are seven books?
这是当主语中的名词为可数名词时的用法.如为不可数名词:
There is some bread on the table.
(对数字提问)How much +名词(数字后面)+is there+地点状语?
(对主语提问)What's +地点状语?
(对地点提问)Where+be+主语?

How many books are there in your school bag?

How many books are there in your schoolbag?
对数量提问用 how many
祝你学习进步，更上一层楼，快乐每一天！(*^__^*)