Read the sentence. The exquisite old painting hanging slightly crooked over the mantelpiece commanded our attention. Which part of the sentence is a prepositional phrase?

A prepositional phrase begins with a preposition and includes its object. In “over the mantelpiece,” “over” is the preposition and “the mantelpiece” is its object, so this is the prepositional phrase. “Hanging slightly crooked” describes the painting but does not begin with a preposition.

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