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"Con quien" is a form of "con quien", a phrase which is often translated as "who ... with". "De quién" is a phrase which is often translated as "whose". Learn more about the difference between "con quien" and "de quién" below.
con quien(
kohn
 
kyehn
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
1.
A word or phrase that is singular (e.g., el gato).
(singular)
(general)
a. who ... with
Soy enfermera y el médico con quien trabajo es cardiólogo.I'm a nurse and the doctor who I work with is a cardiologist.
Maribel, con quien fui a Mallorca, es mi prima.Maribel, who I went to Mallorca with, is my cousin.
b. with whom
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
(formal)
En cuanto la conoció, supo que era la mujer con quien quería pasar el resto de su vida.The moment he met her, he knew she was the woman with whom he wanted to spend the rest of his life.
c.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Esa amiga con quien estoy en la foto es de Madrid, como tú.That friend I'm with in the photo is from Madrid, just like you.
El chico con quien me viste en la fiesta es mi hermano, no mi novio.The boy you saw me at the party with is my brother, not my boyfriend.
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de quién(
deh
 
kyehn
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. whose
¿De quién son estos libros?Whose books are these?
b. to whom
¿De quién es el coche que está bloqueando el garaje?To whom does the car that's blocking the garage belong?
c. who
¿De quién son esas casas?Who owns those houses?
a. who
¿En nombre de quién habla usted?Who are you representing?
¿De parte de quién?Who shall I say is calling?
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