A preposition is a very common little word like at, for, in, on, and to, which the dictionary defines as
a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause.
|Thida works||at||the market.|
|Mika’s listening||to||J-pop again.|
Native English speakers rarely make mistakes with these very common prepositions. However, non-native speakers frequently get them wrong, often because they translate directly from their own language rather than listening to native English speakers (and yes, you always listen to something or someone).
The best way to improve your command of prepositions is to: