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"Son las tres" is a phrase which is often translated as "it's three o'clock", and "trece" is an adjective which is often translated as "thirteen". Learn more about the difference between "son las tres" and "trece" below.
son las tres(
sohn
 
lahs
 
trehs
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. it's three o'clock
Son las tres y acabamos de almorzar. ¿Qué tal una siestecita ahora?It's three o'clock and we've just finished lunch. What about a little siesta now?
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trece(
treh
-
seh
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. thirteen
Mi hermano tiene trece años pero se porta como si tuviera cinco.My brother is thirteen years old but he acts like he's five.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. thirteen
El trece es mi número de la suerte.Thirteen is my lucky number.
b. thirteenth (in dates)
El viernes trece se considera un día de mala suerte en algunos países.Friday the thirteenth is considered an unlucky day in some countries.
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