The indefinite articles in Portuguese

The indefinite articles are placed before nouns, determining them imprecisely, defining a type of object or being as an example of the kind without highlighting one or more. In Portuguese, there are four indefinite articles, they are: um, uma, uns and umas. They correspond in English to a, an and some.

See in the table below the rules and some examples:

Os artigos indefinidos

Articles	How to place	Examples
Um	It's placed before masculine singular nouns.	Um homem (a man), um avião (a plane), um ônibus (a bus), um trem (a train), etc.
Uma	It's placed before feminine singular nouns.	Uma mulher (a woman), uma rua (a street), uma estrada (a road), uma mesa (a table), etc.
Uns	Is placed before masculine plural nouns	Uns jogadores (some players), uns amigos (some friends), uns prédios (some buildings), etc.
Umas	Is placed before feminine plural nouns	Umas praias   (some beaches), umas garrafas (some bottles), umas informações (some information), etc.

In English, as well as in Portuguese, it's possible to describe things indefinitely only by using plural nouns.

E.g. Dogs are reliable. (Cachorros são confiáveis.)

Correspondingly, in English and  in Portuguese, uncountable nouns are used in singular to describe indefinitely things.

E.g. I need water. (Eu eu preciso de água.)

Now you can practice what you've learnt, click on the link below:

The definite and indefinite articles in Portuguese

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