vs
QUICK ANSWER
"Ellos" is a form of "ellos", a pronoun which is often translated as "they". "Fijarse" is a pronominal verb which is often translated as "to pay attention". Learn more about the difference between "ellos" and "fijarse" below.
ellos(
eh
-
yohs
)A pronoun is a word that stands in for a noun (e.g., she).
b. them (after prepositions)
Si confías en ellos, dales las llaves.If you trust them, give them the keys.
c. them (in comparisons)
Mi hermano y yo somos tan altos como ellos.My brother and I are as tall as them.
fijarse(
fee
-
hahr
-
seh
)A pronominal verb always uses a reflexive pronoun. (e.g., Te ves cansado.).
a. to pay attention
Fíjate bien en todo lo que dice y luego me lo cuentas.Pay close attention to everything he says and then tell me afterwards.
a. to notice
No me había fijado en el escalón y casi me caigo.I hadn't noticed the step and almost fell.
fijar
A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
3. (to put)
a. to fix
Tienes que fijar la lámpara al techo con los tornillos.You have to fix the lamp to the ceiling using the screws.
b. to establish
Ha fijado su residencia en Londres por cuestiones de trabajo.He has established his residence in London because of his job.
c. to fix
Antes de decidirnos por una estrategia, debemos fijar nuestros objetivos.We need to fix our objectives before deciding on any strategy.