You need to make sure that the adjective is masculine and pluralistic. The default format already ends on -o, so we know it`s masculine. And to do it in the plural, just add an s. Finally, remember that the adjective should come after the noun. Now look at this unusual summary table of Spanish adjectives! Note how the endings of nouns and these adjectives are similar. Making a masculine adjective feminine is even easier. Just follow these steps: many common adjectives end on -o. These adjectives have four forms. The following words all mean “great”: Spanish singular adjectives always end in -z, -r, l, -e or -o/-a. By far the most common Spanish adjective is the variety -o/-a. It ends in its masculine form on -o and in its feminine form on -a. As has already been said, Spanish adjectives usually have a singular form and a plural form.
The rules are exactly the same as those used to form the plural of nouns. To illustrate this, we would say for a sentence like “It`s a nice model” “Ella es una modelo hermosa”, but for several models we have to say “Ellas sound without hermosas mode”. Note that all words, including the subject pronoun and the SER verb, change, so there is indeed a Spanish subject-adjective correspondence and the sentence has meaning. Un taco es una preparación mexicana que en su forma estándar consiste en una tortilla que contiene algún alimento dentro. (A taco is a Mexican preparation that, in its standard form, consists of a tortilla containing a little food. Su is a determinator or possessive that changes with number, but not with sex. Estándar is an immutable adjective – the same word would have been used with plural or masculine nouns.) Most adjectives that end on a consonant do not change by gender, but change for the number, just like adjectives that end on -e. In English, adjectives either pass in front of what they describe, such as “red house”, “stinking cat” or “hard stone”; or they follow a verb copula, as in “the girl looks angry” or “the ball is flat”. It is possible to make some feminine masculine adjectives by adding at the end -A if the words end in a consonate, but not in all cases, for example “Trabajador/ Trabajadora” (good) and “Popular / Populara” (false). . .