They are variable parts of the oration that accompany the name to say us his gender and his number. They can be masculine or feminine, and number plural or singular.

DETERMINANT ARTICLES

The article is the determinant more used and always goes before the noun. As in English we cannot say "boy is good", in Spanish we can either say "niño es bueno".

Exist two types of articles, definite or indefinite exist.

Definite:

cuadro1
	Masculine		Femenine
Singular	el	coche	la	casa
	the	car	the	house
Plural	los	amigos	las	tiendas
	the	friends	the	shops

Indefinite:

cuadro2
	Masculine		Femenine
Singular	un	perro	una	silla
		dog		chair
Plural	unos	libros	unas	palabras
		books		words

The used article must have the same gender and number that the noun which it accompanies.

Los perros.
La casa.

There are exceptions to that rule:

el problema, el turista, el esquema, el tema, la radio...

The feminine nouns that begin with marked a are constructed with the masculine article for the singular, and the feminine one for the plural.

el hacha (las hachas), el agua (las aguas), el alma (las almas).

In addition to the previous ones, the neutral form exists: lo. (lo bueno es para mí/ the good is to me).

Contractions of articles in Spanish:

a + el = al
El joven va al (a + el) concierto./The young goes to the concert.