Prepositions are words which link nouns, pronouns and phrases to other words in a sentence.

Examples of prepositions include words like after, before, on, under, inside and outside.

The house is on the hill beside a tree.

In this sentence ‘on’ and ‘beside’ are prepositions which show you exactly where the house was.

Let`s see  a video that explains how are prepositions used.

Prepositions