Singular:There is

Afirmativa

There is a book	Hay un libro
There is a boy	Hay un chico
There is a table	Hay una mesa

Negativa

There is not a book	No hay un libro
There isn't a boy	No hay un chico
There isn't a table	No hay una mesa

Interrogativa

Is there a book?	¿Hay un libro?
is There a boy?	¿Hay un chico?
Is there a table?	¿Hay una mesa?

Plural:There are

Afirmativa

There are books	Hay libros
There are boys	Hay chicos
There are tables	Hay mesas

Negativa

There are not books	No hay libros
There aren't boys	No hay chicos
There aren't any tables	No hay mesas

 

Interrogativa

Are there books?	¿Hay libros?
Are there boys?	¿Hay chicos?
Are there any tables?	¿Hay mesas?

Con los nombres plurales e incontables a veces se usa some y any