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"Many of them" is a phrase which is often translated as "muchos de ellos", and "whom" is a pronoun which is often translated as "quien". Learn more about the difference between "many of them" and "whom" below.
many of them(
meh
-
ni
uhv
thehm
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. muchos de ellos
Many of them moved to New York for work.Muchos de ellos se mudaron a Nueva York por trabajo.
b. varios de ellos
I know those boys. Many of them go to my school.Conozco a esos chicos. Varios de ellos van a mi escuela.
whom(
hum
)A pronoun is a word that stands in for a noun (e.g., she).
1. (relative)
a. quien (singular)
A word or phrase that is singular (e.g., el gato).
So this is the new boyfriend about whom I've heard so much.Así que éste es el nuevo novio de quien he oído tanto.
a. quién
Whom do you like more? The tall one or the short one?¿Quién te gusta más? ¿El alto o el bajo?