- el: masc.,sing.(the)
- if the noun ends w/ a constant: add es
- if the noun ends with es or is: it does not change
- la: fem.,sing.(the)
- las: fem.,plural (the)
- los: masc.,plural(the)
- the noun ends w/ a vowel: add an s
- the noun ends w/ a z: change it to c and add es
- un: masc.,sing.(a)
- una: fem.,sing. (a)
- unas: fem.,plural(some)
- unos: masc.,plural(some)