1. To modify a noun or pronoun: They act as adjectives, providing more information about the noun or pronoun they are modifying.
Example: "The book on the table is mine."
The prepositional phrase "on the table" modifies the noun "book" by telling us where the book is located.
2. To modify a verb, adjective, or another adverb: They act as adverbs, providing more information about the verb, adjective, or adverb.
Example: "She walked into the room."
The prepositional phrase "into the room" modifies the verb "walked" by telling us where she walked.
Let me know if you'd like more examples or want to explore other aspects of prepositional phrases!