A / An  in Spanish\n\n For singular/feminine we use: Una mesa. For masculine plural we use: Unos coches. For plural feminine we use: Unas mesas.

In Spanish, when referring to nouns that have no inherent gender, such as "table" ("mesa" in Spanish), the article used is determined by the sound at the beginning of the word. If the word begins with a stressed "a" sound, the article "la" is used. If it begins with any other sound, the article "el" is used.