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A prepositional phrase is a group of words consisting of a preposition, its object, and any words that modify the object. Most of the time, a prepositional phrase modifies a verb or a noun. These two kinds of prepositional phrases are called adverbial phrases and adjectival phrases, respectively.

Example:He arrived in time .

Example:Is she really going out with that guy.

To these two basic elements, modifiers can be freely added.

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