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"Por qué" is a form of "por qué", a phrase which is often translated as "why". "De qué" is a phrase which is often translated as "what". Learn more about the difference between "de qué" and "por qué" below.
de qué(
deh
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
por qué(
pohr
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).