Answer :
Final answer:
Prepositional phrases modify nouns or verbs by providing additional information through a preposition and its object.
Explanation:
Prepositional phrases behave as adjectives or adverbs, modifying nouns or verbs. They consist of a preposition and its object. For example, in 'hanging slightly crooked over the mantelpiece,' 'over the mantelpiece' is the prepositional phrase.
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