Use of Double Negatives in Spanish
Juan no necesita algo. (incorrect)
Juan doesn't need anything. (correct)
Juan no necesita nada. (correct)
Juan doesn't need nothing. (incorrect)
No tengo nada que hacer. (correct)
I don't have nothing to do. (incorrect)
Let's look at some examples of sentences that use more than one negative expression:
No tienes nada que hacer.
You don't have anything to do.
Ese niño no se lleva bien con nadie.
That boy doesn't get along well with anyone.
Gabriel nunca ha contribuido nada a la clase.
Gabriel has never contributed anything to the class.
Nunca debes hablar con ningún extraño.
You should never speak to any stranger.
¿No tienes nada que decir?
Don't you have anything to say?