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"Don't know" is a form of "know", a transitive verb which is often translated as "saber". "No" is a form of "no", an interjection which is often translated as "no". Learn more about the difference between "don't know" and "no" below.
know(
no
)A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
a. saber
Do you know when the next bus is leaving?¿Sabes a qué hora sale el próximo autobús?
He knows French, Spanish, and German.Sabe francés, español y alemán.
a. conocer
I know her from school, but we're not really friends.La conozco de la escuela, pero realmente no somos amigos.
a. saber
I don't know if you should walk home so late.No sé si deberías caminar sola a tu casa a esta hora.
a. saberse
Do you know the alphabet yet?¿Ya te sabes el abecedario?
He knows a lot about the American Civil War.Se sabe mucho de la guerra civil estadounidense.
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
no(
no
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (negation)
a. no
His new apartment is no larger than the last one.Su nuevo apartamento no es más grande que el último.
I have been dieting for a month, but I am no thinner than I was.Llevo un mes de dieta, pero no he enflaquecido nada.
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
3. (negation)
An adjective is a word that describes a noun (e.g., the big dog).
4. (not any)
b. sin (used as a preposition in Spanish)
She did it all on her own, with no help at all.Lo hizo todo sola, sin ayuda de nadie.
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
It says "no parking." You can't leave your car here.Dice "prohibido el estacionamiento"; no puedes dejar aquí el coche.
There's a sign on my son's door that says "no girls allowed."Hay un anuncio en la puerta de mi hijo que dice "no se admiten chicas".
6. (no way of)
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
If my parents see the house like this, there's no telling what they'll do.Si mis padres ven la casa en tal estado, quién sabe lo que harán.
There's no avoiding the issue any more.Ya no se puede eludir el asunto.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
b. el voto en contra (M) (politics)
(m) means that a noun is masculine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
The bill received 64 noes, and did not pass.La propuesta de ley recibió 64 votos en contra y fue rechazada.