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"They are" is a form of "they are", a phrase which is often translated as "ellos son". "Yes" is an interjection which is often translated as "sí". Learn more about the difference between "they are" and "yes" below.
they are(
they
 
ar
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. ellos son
They are rich.Ellos son ricos.
b. ellos están
They are in Barcelona right now.Ellos están en Barcelona ahora mismo.
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yes(
yehs
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a.
Do you want coffee? - Yes, but just a little bit.¿Quieres café? - Sí, pero solo un poquito.
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
interjection
a.
Yes! I knew I was right!¡Sí! ¡Sabía que tenía razón!
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
noun
a. el sí
(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).
(M)
Vote "yes" to the construction of the new school.Vota "sí" para la construcción de la nueva escuela.
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