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"La fiesta" is a form of "fiesta", a noun which is often translated as "party". "Ser" is a copular verb which is often translated as "to be". Learn more about the difference between "ser" and "la fiesta" below.
ser(
sehr
)A copular verb links the subject of a clause to the predicate (e.g., My brother is tall).
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
a. to be made of
El casillero antiguo de mi abuela es de roble.My grandma's antique dresser is made of oak.
a. to root for
Yo soy del mejor equipo del mundo: FC Barcelona.I root for the best team in the world: FC Barcelona.
An impersonal verb is a verb with no apparent subject (e.g., Llueve en España.).
a. to be
Son las siete de la mañana.It is seven in the morning.
Era de noche cuando llegaron.It was night when they arrived.
An auxiliary verb, or helper verb, is a conjugated verb that comes before a main verb and determines the main verb's tense, mood, or aspect (e.g., I have gone.).
a. to be
El edificio fue diseñado por un equipo de arquitectos.The building was built by a team of architects.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
la fiesta(
fyehs
-
tah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
las fiestas
A plural noun indicates that there is more than one person, place, thing, or idea.
3. (vacation)
b. break (United States)
Regionalism used in the United States
¿Dónde vas a pasar las fiestas de Pascua?Where are you going to spend Easter break?
a. festival
Las fiestas en honor a San Juan se celebran en junio en Puerto Rico.The festival honoring St. John is celebrated in June in Puerto Rico.
b. festivity
Habrá varias fiestas este fin de semana para conmemorar el fin de la guerra.There will be various festivities this weekend to commemorate the end of the war.