a/to, toward
ante/before; in the presence of
bajo/beneath, under
con/with
contra/against; in exchange for
de/of; from; about
desde/from, since
en/in, inside, within
entre/between
hacia/towards, at, by, up to
hasta/towards, at, by, up to
para/for, to, in order to, toward
por/for; by
según/according to
sin/without
so/below, under, beneath
sobre/over, above; about
tras/behind, after


The prepositions a and de use contracted forms with the masculine article el: al and del.
Verb + preposition before an infinitive.

Quiero jugar./I want to eat.
Ella va a traer la silla./She is going to bring the chair.

Normally in Spanish are used this forms:

Ir + a (to go to)
Venir + de (to come from)
Estar + en (to be in)


The infinitive after prepositions:

Spanish always uses an infinitive after a preposition (present participle in English -ing).
Antes de jugar, Juan terminó los deberes./Before playing Juan finished the homework.


The pronouns as objects of prepositions:

de mi/of me; de ti/of you (fam.)...
The pronouns used as objects of prepositions are the same as the subject pronouns, except for mí and ti.

Exceptionally, if the preposition is con, is used:

Antonia viene conmigo a la fiesta./Antonia comes with me to the party.

The reflexive pronouns used as objects of prepositions are the same as the pronoun objects of prepositions, except for the third person singular and plural, de si.

Ellos quieren el coche para sí./They want the car for themselves.