Which words make up the adverb phrase in the sentence? which words does the adverb phrase modify? many early cities were built a
round forts. a. many early; modifies cities wereb. were built; modifies early citiesc. early cities; modifies were builtd. around forts; modifies were built
An adverb phrase is a kind of prepositional phrase that functions as an adverb. Therefore, it answers the questions <em>Where? When? How? </em>or<em> Why?</em> and modifies a verb.
In the last sentence, we have an adverb phrase:
around forts
It modifies the verb 'were built'. It is answering the question "Where?"