Oraciones con affirmative plural y negative singular pliss?

Affirmative : There is a beach in Cancun.

(Hay playa en Cancun)

Negative : There is not a beach in Cancun.

(No hay playa en Cancun)

Interrogative : Is There a beach in Cancun?

(¿Hay playa en Cancun?

)

Affirmative : There is a dog next to the tree.

(Hay un perro a lado del árbol)

Negative : There is not a dog next to the tree.

(No hay un perro a lado del árbol)

Interrogative : Is There a dog next to the tree?

(¿Hay un perro a lado del árbol?

)

THERE ARE

Affirmative : There are three pencils on my table.

(Hay tres lápices sobre mi mesa)

Negative : There are not three pencils on my table.

(No hay tres lápices sobre mi mesa)

Interrogative : Are there three pencils on my table?

(¿Hay tres lápices sobre mi mesa?

).