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"From which" is a phrase which is often translated as "del cual", and "that" is a conjunction which is often translated as "que". Learn more about the difference between "from which" and "that" below.
from which(
fruhm
wihch
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. del cual
My mother took a small envelope from the drawer, from which she produced a ring.Mi madre sacó del cajón un sobre pequeño, del cual sacó un anillo.
a. de lo cual
He said "I have to work late, but I'll try to make it," from which I gathered we wouldn't be seeing him.Dijo "tengo que trabajar hasta tarde, pero trataré de ir", de lo cual entendí que no lo íbamos a ver.
that(
thaht
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A pronoun is a word that stands in for a noun (e.g., she).
An adjective is a word that describes a noun (e.g., the big dog).