Quick answer
"Of a" is a phrase which is often translated as "de un", and "for a" is a phrase which is often translated as "para un". Learn more about the difference between "of a" and "for a" below.
of a
A phrase is a group of words commonly used together (e.g once upon a time).
phrase
1. (general)
a. de un (masculine)
I am the daughter of a history professor.Soy la hija de un profesor de historia.
b. de una (feminine)
This song is an example of a love ballad.Esta canción es un ejemplo de una balada de amor.
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for a
A phrase is a group of words commonly used together (e.g once upon a time).
phrase
1. (used to indicate intention)
a. para un (masculine)
Georgina auditioned for a role in the movie.Georgina hizo una audición para un papel en la película.
b. para una (feminine)
She has an idea for a new television series.Tiene una idea para una nueva serie de televisión.
2. (used to indicate duration)
a. por un (masculine)
I went to the gym for a while.Fui al gimnasio por un rato.
b. por una (feminine)
I'm so tired that I just want to go to bed for a week.Estoy tan cansado que solo quiero acostarme por una semana.
c. durante un (masculine)
Nancy dressed in black for a year after her husband died.Nancy se vistió de negro durante un año después de la muerte de su marido.
d. durante una (feminine)
Victor worked on this for a week.Víctor trabajó en esto durante una semana.
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