There is/There are

"There is" y "There are" quieren decir "Hay" en español. "There is" es singular y "There are" es plural.

There is a book. (Hay un libro.)*
There are books. (Hay libros.)

*Se puede hacer una contracción de "There is" a "There's". No se puede hacer una contracción de "There are."

El negativo es "There is not" y "There are not" y sus contracciones.

There is not a book. - There isn't a book.
There are not books. - There aren't books.

Para formar una pregunta nada más cambiamos el orden de las palabras.

Is there a book?
Yes, there is.
No, there isn't.

Are there books?
Yes, there are.
No, there aren't.