Look at these examples.
Ana compra una planta.Ana buys a plant.
Eso es un paraguas.That is an umbrella.
Es un excelente actor.He is an excellent actor.
¡Tengo una idea!I have an idea!
Note that to express a/an + [singular noun] in Spanish, you use either un or una, depending on the gender of the noun it refers to, as follows:
for feminine singular
for masculine singular
You can never
instead of un
Tengo uno coche.
Tengo un coche.
is not an article, but the actual number one
, and it works as a pronoun
. See also Using numbers as pronouns
It is important to remember that in Spanish, like in all Latin languages, every noun is either masculine or feminine.
and Using los or las to say the (plural definite articles)
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