Preposition and postposition explained to kids

A preposition is a word that shows the relationship between two things. For example, in the sentence "The cat sat on the mat," the word "on" is a preposition. A preposition usually comes before a noun or a pronoun. A postposition is a word that shows the relationship between two things. For example, in the sentence "The cat sat on the mat," the word "on" is a postposition. A postposition usually comes after a noun or a pronoun.