The verb form "hay" has two meanings:
there is
there are
Examples:
Hay muchos libros en la biblioteca.
There are many books in the library.Hay un libro encima de la mesa.
There is a book on the table.
Más ejemplos:
Hay dos baños en mi casa.
There are two baths in my house.Hay cuatro océanos en el mundo.
There are 4 oceans in the world.Hay un libro y una pluma en la mesa.
There is one book and one pen on the table.
or:
There is a book and a pen on the table.
When used in questions, "hay" has two different meanings:
Is there?
Are there?
Ejemplos:
¿Hay un hotel en el centro?
Is there a hotel downtown?¿Hay algunos libros por aquí?
Are there any books around here?
Más ejemplos:
¿Hay muchos estudiantes en la clase?
Are there lots of students in the class?¿Hay cuatro sillas en el cuarto?
Are there 4 chairs in the room?¿Hay una chica o dos?
Is there one girl or two?
The verb form "hay" can also be used to answer questions.
¿Hay un hotel en el centro?
Is there a hotel downtown?Sí. Sí hay.
Yes. Yes there is.¿Hay algunos libros por aquí?
Are there any books around here?No. No hay.
No. No there aren't.