No it is a preposition.
adjective phrase
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.
adjective phrase
adverb
adjective phrase
An adjective (adjectival) phrase modifies nouns or pronouns. There are several types, including those based on an adjective (adjective and its adverbs), as well as adjective prepositional phrases, and infinitive phrases.
Well this would depend on what type of adjective phrase you are talking about. There are three different types of adjective phrases:Head-final adjective phrase - This contains an adverb and then an adjectiveHead-initial adjective phrase - This contains an adjective followed by a preposition and a noun.Head-medial adjective phrase - This contains an adverb followed by an adjective, preposition, and then a noun
The phrase "not common" is an adjective phrase, which can be expressed by the adjective "uncommon." It means not typical or ordinary.
An adjective phrase can begin with an adjective, adverb, preposition, participle, or infinitive. It is any phrase that acts as an adjective.An adjective clause begins with a relative pronoun, such as who, which, or that.
an adjective phrase
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.
an adjective phrase is a prepositional phrase that describes a noun or a pronoun
adjective phrase
It is an adjective phrase, because it will apply to a noun (e.g. plan, program).
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.
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.