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"Cuarto" is an adjective which is often translated as "fourth", and "son las ocho" is a phrase which is often translated as "it's eight o'clock". Learn more about the difference between "cuarto" and "son las ocho" below.
cuarto, el cuarto(
kwahr
-
toh
)An adjective is a word that describes a noun (e.g., the big dog).
a. fourth
Entra al edificio y toma el ascensor al cuarto piso.Enter the building and take the elevator to the fourth floor.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
son las ocho(
sohn
lahs
oh
-
choh
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. it's eight o'clock
Son las ocho, Rafael. Levántate ya, que hay que ir a la escuela.It's eight o'clock, Rafael. Get up now. You have to go to school.