It could be either, because it is defined by the word it modifies. It is more likely an adjective phrase.
E.g. A castle with a moat is harder to attack.
It appears to be an adverb in the form:
"The castle was originally built with a moat" although it seems to say that the castle was built 'using' a moat rather than featuring one.
If the phrase describes (modifies) a noun or pronoun, it's an adjective phrase. If the phrase describes a verb, adjective, or adverb, it's an adverb phrase.
It is an adverb phrase (tells where).
Adverb phrase
adverb phrase
Yes, you can have a sentence without a adjetive or adverb phrase. For example, Her name is Sally. No adverb or adjetive!
If the phrase describes (modifies) a noun or pronoun, it's an adjective phrase. If the phrase describes a verb, adjective, or adverb, it's an adverb phrase.
adverb phrase
Adverb Phrase
an adjective phrase acts like an adjective and modifies the noun or pronoun in the sentence. an adverb phrase acts like an adverb and modifies the verb, adjective, or adverb in the sentence.
It is an adverb phrase (tells where).
adjective phrase
adverb
adverb phrase
adverb phrase
It is an adverb phrase, although in forms such as "The period after a supernova is marked by stellar collapse" it seems to be an adjective phrase.
This is a sentence (or clause), not a phrase. The adjective is dumb, and the adverb is very, modifying dumb. So "very dumb" is the adjective phrase.
Yes, prepositional phrases can function as either adjective phrases or adverb phrases in a sentence. An adjective phrase modifies a noun or pronoun, while an adverb phrase modifies a verb, adjective, or adverb.