Prepositional describes anything related to or containing a preposition, which is a small but crucial word that shows relationships between things in a sentence. Words like “in,” “on,” “under,” “beside,” “through,” “during,” and “with” are all prepositions.

When you write “the book on the table” or “the dog under the porch,” those parts are prepositional phrases. Each one starts with a preposition (on, under) and includes the noun that follows it (table, porch). These phrases tell you where the book is or where the dog is hiding.

Prepositional phrases do important work in sentences. They can describe location: “The cookies in the jar are gone.” They can show time: “We'll meet after school.” They can indicate direction: “She ran toward the playground.” Without these prepositional phrases, your sentences would feel choppy and unclear.

Teachers often use the term prepositional phrase when discussing sentence structure. If you can spot these phrases, you can better understand how sentences work and write more clearly yourself. Here's a quick test: in the sentence “The squirrel scrambled up the tree during the storm,” there are two prepositional phrases. Can you find them? (Hint: look for those little relationship words.)