Indefinite Articles in Spanish

Overview

Indefinite articles in Spanish translate in English to a, an, some or a few. Just like definite articles, indefinite articles indicate the gender (masculine or feminine) and number (singular or plural) of a noun and have four forms.

Indefinite Article Forms:

NumberGenderForm
singularmasculine
un
 
singularfeminine
una
 
pluralmasculine
unos
 
pluralfeminine
unas
 

Matching Gender and Number

The indefinite article always has to match both the gender and number of its noun. If the noun is masculine and singular (like gato) , then its article also has to be masculine and singular (un gato ). If that same noun were plural (gatos) the article would also be plural (unos gatos ).

Quiero una galleta.
I want a cookie.
 
Compré unas faldas nuevas ayer.
I bought some new skirts yesterday.
 
¿Hay un elefante en este zoológico?
Is there an elephant in this zoo?
 
Hay unos niños en el patio.
There are a few children on the patio.
 

Exceptions

When a feminine singular noun begins with a stressed á, a, or ha, the masculine indefinite article is used instead of the feminine indefinite article to aide in pronunciation.

When the same noun is plural, the regular feminine article is used.

SingularPlural
un águila
 
unas águilas
 
un arpa
 
unas arpas
 
un hacha
 
unas hachas
 
un aula
 
las aulas
 

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