翻译下英文~~2句话~~

How many books are there on the desk?

There's a man who sells milk near our school.

How many books are there on the desk?
There is a milk seller near our school.

都是There be句型的延伸：
How many books are there on the desk?
疑问词加上谓、主、表

There's a man who sells milk near our school.
a man是单数，所以前面用is

How many books are there on the desk?

There's a man who sells milk near our school.

How many books are there on the desk?
There is a milk seller near our school.
这个两句子都要用：There be结构去翻译，意思是:某时某地存在某物。