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"I know" is a form of "know", a transitive verb which is often translated as "saber". "Yeah" is an adverb which is often translated as "sí". Learn more about the difference between "yeah" and "I know" below.
yeah(
yah
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (colloquial) (affirmation)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
a. sí
Did you finish all of your homework? - Yeah, I did it already.¿Terminaste de hacer toda tu tarea? - Sí, ya la hice.
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
2. (colloquial) (affirmation)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
a. sí
Hey, kids, do you all want to go get ice cream? - Yeah!Oye, chicos, ¿quieren ir a comer helado? - ¡Sí!
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.).
