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"Which" is a pronoun which is often translated as "cuál", and "What do you prefer?" is a phrase which is often translated as "¿Qué prefieres?". Learn more about the difference between "which" and "What do you prefer?" below.
which(
wihch
)
A pronoun is a word that stands in for a noun (e.g., she).
pronoun
a. cuál
Which are the classes that interest you this semester?¿Cuáles son las clases que te interesan este semestre?
Which do you prefer? The pasta or the salad?¿Cuál prefieres? ¿La pasta o la ensalada?
a. que
The invitation, which was mailed to you, is for our wedding.La invitación, que se te mandó, es para nuestra boda.
b. el cual
The village has a castle, which dates from the 12th century.El pueblo tiene un castillo, el cual data del siglo XII.
c. la cual
The actor's house, which is on top of a hill, has a wonderful view of LA.La casa del actor, la cual está en lo alto de una colina, tiene unas vistas maravillosas de Los Ángeles.
d. lo cual
She didn't support me when I needed her, which made me realize that she wasn't a real friend.No me apoyó cuando la necesité, lo cual me hizo pensar que no era una amiga de verdad.
e. los cuales
There are several books on the subject, which are available in the library.Existen varios libros sobre el tema, los cuales están disponibles en la biblioteca.
f. las cuales
He explained it using some scientific words, which I have forgotten.Lo explicó con unas palabras científicas, las cuales no recuerdo.
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. qué
Which type of food do you want to serve at the party?¿Qué tipo de comida quieres servir en la fiesta?
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What do you prefer?(
wuht
 
du
 
yu
 
pruh
-
fuhr
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. ¿Qué prefieres?
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(singular)
Should we go to a movie or rent one? What do you prefer?¿Deberíamos ir al cine o alquilar una película? ¿Qué prefieres?
b. ¿Qué prefiere?
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
(formal)
(singular)
Would you like the wine now or with your meal? What do you prefer?¿Le gustaría el vino ahora o con su comida? ¿Qué prefiere?
a. ¿Qué prefieren? (plural)
Would you like time to work on the group projects or your homework? Class, what do you prefer?¿Les gustaría más tiempo para trabajar en los proyectos de grupo o las tareas? Clase, ¿qué prefieren?
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