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"Aquellos" is a form of "aquellos", an adjective which is often translated as "those". "Los" is a definite article which is often translated as "the". Learn more about the difference between "los" and "aquellos" below.
los(
lohs
)A definite article is a word that identifies a noun as specific or known to the speaker (e.g., the girl).
A pronoun is a word that stands in for a noun (e.g., she).
aquellos(
ah
-
keh
-
yohs
)An adjective is a word that describes a noun (e.g., the big dog).
a. those
Nací en 1920 y, en aquellos días, no teníamos televisión.I was born in 1920, and in those days, we didn't have television.
Aquellas montañas a lo lejos son las más altas del país.Those mountains in the distance are the tallest in the country.
A pronoun is a word that stands in for a noun (e.g., she).
a. those
¿Te acuerdas de los sánduches que hacían aquí antes? - Sí, aquellos eran muy buenos.Do you remember the sandwiches they used to make here? - Yeah, those were really good.
Vi unas camisas parecidas a estas hace un tiempo, pero me gustaron más aquellas.I saw some shirts like these ones a while ago, but I liked those more.
b. those ones
No quiero estos melocotones. Quiero aquellos.I don't want these peaches. I want those ones.
Estas sillas son baratas, pero aquellas son más bonitas.These chairs are cheap, but those ones are nicer.
