In the following section you will learn the rules for uses of prepositions, whether they are used in conjunction with other nouns to make adjectives or whether they are used to modify a verb.
A) Prepositional adjective: the union of a preposition and a noun that modifies another noun.
- noun preposition + noun = adjective
una camisa de algodón (a shirt of cotton).
una silla de madera (a wooden chair).
un reloj de oro (a gold watch).
una estrella de papel (a paper star).
B) Prepositional adverb: the union of a preposition and a noun that modifies a verb.
- verb preposition + noun = adverb
corre con rapidez (he runs fast).