A determiner qualifies or determines the meaning of a noun by expressing such concepts as quantity or definiteness. Determiners are usually placed before the noun. Determiners always agree in gender and number with the nouns they modify.
Types of Determiners
el, la, los, las
They introduce nouns that are specific. They are translated as the in English.
Mi mamá tenía la tradición de que el hombre no hace nada, en cuanto a la casa no hace nada, no cocina, no lava, no limpia.My mom had the tradition that the man does not do anything, he does not do anything around the house, he does not cook, wash, clean.
un, una, unos, unas
They introduce nouns that are not specific. They are translated as a or an in English.
mi, mis, tu, tus, su, sus, nuestro, nuestra, nuestros, nuestras
They indicate ownership or possession like my, your, his, her, our, their.
este, esta, ese, esa, aquel, aquella, etc.
They point out something. They may be translated in English as this, that, these, those depending on the number (singular or plural) and proximity (near or far).
Bueno, primeramente ya tenía yo impresiones de este país porque lo visitaba, visitábamos El Paso mucho.Well, primarily I had impressions about this country because I used to visit it, we used to visit El Paso a lot.