Prepositional Phrases as Parts of Speech

Last updated: May 17, 2018 at 3:36 am

chart photoA preposition and its object together form a prepositional phrase. Example:

John sat on the bench.

Preposition = on

Object of Preposition = the bench.

Prepositional Phrase = on the bench.

The prepositional phrase “on the bench” is a word team which modifies the verb “sat.” Therefore, the prepositional phrase serves as a part of speech.

We know that a word that modifies a verb is called an adverb. Therefore, we can say that “on the bench” is an “adverb phrase.” Or, more specifically, it is an “adverb prepositional phrase.”

But the prepositional phrase can also do the work of an adjective and noun. Here are some examples.

Over the bridge is a good place to swim.

Preposition = over

Object of the preposition = the bridge.

Prepositional Phrase = Over the bridge.

Over the bridge = name of a place = noun phrase.

We can say then that “over the bridge” is a “noun prepositional phrase.”

Now for the adjective prepositional phrase.

Stop at the house on your left.

Preposition = on

Objective of preposition = your left

Prepositional Phrase = on your left.

The prepositional phrase “on your left” is a word team which modifies the noun “house.” We know that a word which modifies a noun is an adjective. Therefore, we can say that “on your left” is a “noun prepositional phrase.”

Although a prepositional phrase is not a single word, it still serves as a single part of speech.

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