Prepositions of Time, Place, and Introducing Objects ...
owl.purdue.edu › owl › english_as_a_second_languagePrepositions are words or short phrases that identify the spatial (in space), directional (the direction in which something is moving), or temporal (in time) relationship of one or more people or things to other people or things. Prepositions communicate abstract relationships as well as concrete ones. While all languages have prepositions, English has a particularly large number of them, with important differences of nuance between similar prepositions.