Prepositions are invariant words that relate one phrase to another and show links of place, time, direction, cause, purpose, or accompaniment. They always come before the term they introduce and do not change gender or number. In Spanish, they are part of very frequent structures that also appear in Prepositions of Place, Prepositions of Direction, Prepositions of Time and Prepositional Phrases.

The simple prepositions most common are a, de, en, por and para. They are used to join complements with the verb, with a noun or with another expression, and their value depends on the context. These forms serve as the basis for understanding more specific uses of place, time and direction, as well as common combinations with verbs.

IdeaIdea	EjemploExample
a es una preposición de destino o enlace personal.a is a preposition of destination or personal link.	Voy a casaI'm going home
de indica origen, posesión o relación.de indicates origin, possession, or relation.	El libro de AnaAna's book
en expresa ubicación o situación.en expresses location or situation.	Vivo en MadridI live in Madrid
por señala causa, medio o recorrido.por indicates cause, means, or route.	Caminamos por el parqueWe walked through the park
para expresa finalidad o destinatario.para expresses purpose or recipient.	Este regalo es para tiThis gift is for you

Place prepositions place a person, an object or an action in relation to another reference point. En usually marks general location, sobre indicates support or surface, bajo expresses a lower position and entre places something in the middle of two or more elements. Some regions prefer forms like arriba de instead of encima de, but the basic meaning of location remains.

IdeaIdea	EjemploExample
en sitúa algo dentro de un espacio o lugar.en places something inside a space or place.	El coche está en el garajeThe car is in the garage
sobre indica contacto con una superficie superior.sobre indicates contact with an upper surface.	El cuaderno está sobre la mesaThe notebook is on the table
bajo expresa una posición inferior.bajo expresses a lower position.	El gato duerme bajo la sillaThe cat sleeps under the chair
entre indica una posición intermedia.entre indicates an intermediate position.	La farmacia está entre dos bancosThe pharmacy is between two benches

Time prepositions organize events in relation to a moment, an interval, or a duration. Desde marks the starting point, hasta marks the end, during expresses duration within a period, and en can indicate a specific moment or a time. These temporal relations are used very productively with dates, times, seasons, and life stages.

IdeaIdea	EjemploExample
desde marca el punto de inicio.desde marks the starting point.	Trabajo desde las ochoI've been working since eight
hasta marca el límite final.hasta marks the end.	Estudié hasta la nocheI studied until night
durante expresa duración dentro de un lapso.durante expresses duration within a span.	Habló durante la reuniónHe spoke during the meeting
en señala un momento o período.en indicates a moment or a period.	Nos vemos en veranoSee you in summer

Direction prepositions indicate movement toward a place or goal. Hacia suggests approximate direction without arrival, a indicates destination or direction, and hasta marks arrival or complete journey. In some regions, a and en can be interchanged in expressions of movement, but the nuance of destination remains central.

IdeaIdea	EjemploExample
hacia expresa dirección aproximada.hacia expresses approximate direction.	Caminamos hacia la plazaWe walked toward the square
a indica destino o meta.a indicates destination or goal.	Voy a la estaciónI'm going to the station
hasta indica llegada completa.hasta indicates arrival or completion.	Llegaron hasta el ríoThey reached the river

Por and Para contrast very frequently, and it's helpful to learn them together. Por tends to relate to cause, means, exchange, approximate duration or movement through a place, while Para tends to express purpose, recipient, deadline or point of view. The difference becomes clearer when looking at what concrete relationship each preposition marks within the sentence.

IdeaIdea	EjemploExample
por expresa causa o motivo.por expresses cause or motive.	Lo hice por tiI did it for you
por expresa medio o recorrido.por expresses means or route.	Envié el mensaje por correoI sent the message by mail
para expresa finalidad o propósito.para expresses purpose or objective.	Estudio para aprenderI study to learn
para expresa destinatario o plazo.para expresses recipient or deadline.	La tarea es para mañanaThe assignment is for tomorrow

Prepositional phrases function as a single unit and provide a combined meaning. Next to indicates proximity, in front of indicates a frontal position, and because of introduces an explicit cause. These expressions expand the prepositional system and tend to keep a stable meaning in everyday use.

IdeaIdea	EjemploExample
junto a expresa proximidad.Next to expresses proximity.	Se sentó junto a su amigaHe sat next to his friend
delante de indica posición frontal.In front of indicates a frontal position.	El perro está delante de la puertaThe dog is in front of the door
a causa de introduce la causa.Because of introduces the cause.	Llegó tarde a causa del tráficoHe arrived late due to traffic

Many constructions in Spanish require a fixed preposition after the verb. Depend on, think of and dream of are very common combinations, and the preposition forms part of the verb's governing pattern. These associations are not chosen by literal translation, but by established usage in the language.

IdeaIdea	EjemploExample
depender se construye con de.depend on is built with de.	Dependo de mi horarioI depend on my schedule
pensar se construye con en.think of is built with en.	Pienso en mis amigosI think of my friends
soñar se construye con con.dream of is built with con.	Sueño con viajarI dream of traveling

With a preposition, the masculine singular article el contracts with a and de, giving al and del. Prepositions also combine with tonic pronouns in special forms like conmigo, contigo and consigo. These forms are fixed and show a prepositional link already integrated into a single word.

IdeaIdea	EjemploExample
a más el se contrae en al.a plus el contracts to al.	Voy al mercadoI go to the market
de más el se contrae en del.de plus el contracts to del.	Vengo del colegioI come from the school
con más yo forma conmigo.con plus I form with me	Ven conmigoCome with me
con más tú forma contigo.con plus you form contigo.	Quiero ir contigoI want to go with you

Prepositions are invariant, come before their complement, and establish precise relationships between words and groups of words. Their most common uses include place, time, direction, cause, purpose and accompaniment, as well as fixed combinations with verbs and prepositional phrases. Mastering a, de, en, por and para, along with their special links, allows interpreting and constructing sentences with clarity and naturalness.