It's a preposition, following a noun. It's a preposition, just like upside down. Expressing a relation, where the objects are. Acting as locators, to tell the time and place When you use a preposition, you modify the noun They are helpful Prepositions add detail. A prepositional phrase, like against the wall Acting as an adverb, adjective, or noun Before a noun or pronoun, to relate it to a word Showing us directions, they are never wrong When you use a preposition, you modify the noun They are helpful Prepositions add detail. It's a preposition, nothing more to say It's a preposition, sometimes as a phrase Continuing a sentence, keeping it alive Eighty to a Hundred, different prepositions When you use a preposition, you modify the noun They are helpful, prepositions add detail.