What Is an Adverb Phrase?
You may find yourself asking, what is an adverb phrase? To clarify, an adverb phrase, like an adverb, modifies a verb, an adjective, or an adverb by providing additional details about it.
Prepositional phrases and infinitive phrases can both function as an adverb phrase in sentences. A prepositional phrase includes a preposition, its object, and any modifiers of the object. An infinitive phrase includes an infinitive, plus any modifiers and complements.
Examples of Prepositional Phrases as an Adverb Phrase:

(Past the lakefront is the prepositional phrase. It functions as an adverb phrase, modifying the verb drove.)
(To the grocery store is the prepositional phrase. It functions as an adverb phrase, modifying the verb went.)
(Between the couch cushions is the prepositional phrase. It functions as an adverb phrase, modifying the verb found.)
(For your health is the prepositional phrase. It functions as an adverb phrase, modifying the adjective good.)
(At the crime scene is the prepositional phrase. It functions as an adverb phrase, modifying the verb arrived.)
Examples of Infinitive Phrases as Adverb Phrases:
(To track my running speed is the infinitive phrase. It functions as an adverb phrase, modifying the verb use.)
(To make the most of the day is the infinitive phrase. It functions as an adverb phrase, modifying the adverb early.)
(To get the room ready for painting is the infinitive phrase. It functions as an adverb phrase, modifying the verb moved.)
(To have her eyes checked is the infinitive phrase. It functions as an adverb phrase, modifying the verb went.)
(To keep the cabin warm is the infinitive phrase. It functions as an adverb phrase, modifying the verb put.)
(To prepare for the holiday is the infinitive phrase. It functions as an adverb phrase, modifying the verb cleaned.)
Related Topics:
Verbals
Infinitive Phrase
Participle Phrase
Gerund Phrase
Appositive Phrase
Prepositional Phrase
Adjective Phrase
Verb Phrase
All Grammar Terms