In Portuguese, differently than in English, not only the nouns have plural forms, but the adjectives do as well. Remember an adjective in Portuguese has to agree in gender (masculine or feminine) and in number (singular or plural) with the noun it refers to.
Adjectives are words used to describe everything that exists in the world: people, animals, nature and its phenomena, and things. In Portuguese, an adjective must agree in gender and in number with the word that it is describing. Most of the time it is accompanied by a form of verb to be: Ser or Estar. As …
Você is the most popular way used to refer to you in Brazil. That’s the term everyone uses with their brothers and sisters and close friends. Even though você means you, it is conjugated with the verb form in the 3rd person.
In Portuguese just as in English, there are two types of articles: the definite articles – o, a, os, as (the) and the indefinite articles um, uma, uns, umas (a, an). The reason that there are four representations of both types of articles in Portuguese it’s because there is a distinction between the masculine and feminine words.