A preposition is a word that shows the relationship between a noun (or a pronoun) and another word in the sentence.

My dog is on the bed.

The cat is under the table.

The giraffe is in front of the trees.
A preposition is a word that shows the relationship between a noun (or a pronoun) and another word in the sentence.

My dog is on the bed.

The cat is under the table.

The giraffe is in front of the trees.