Prepositions are a closed word class. This means there are only a few of them and no new ones are ever added to the group.
This article introduces the main groups of prepositions in English.
A preposition joins nouns, pronouns and phrases with other words in a sentence. Generally speaking, a preposition tells us:
where something is
when something happened
Different Types of Prepositions
The word or phrase that the preposition introduces is called the object of the preposition. A preposition usually places its object in space or in time. This is why we talk about prepositions of place and prepositions of time.
prepositions of place
Prepositions of place tell us where something is or happens:
on the sofa
under the bed
See the main article, Prepositions of Place.
prepositions of time
Prepositions of time tell us when something happens:
See the main article, Prepositions of Time.
verb + preposition
Some words are often followed by a specific preposition:
See the main article, Verb plus Preposition.
Some verbs take a preposition to make a new verb. These are called phrasal verbs:
put up with
See the main article, Phrasal Verbs.