Answer:
Adverb clause: better than he did last year
Word modified: plays
Explanation:
An adverb clause is a type of a dependent clause that modifies or to add more detail to an adjective, a verb or another adverb. This type of clauses often answers questions such as "Why?", "How?", "When?", "Where?" and "In what circumstances?".
In the provided sentence, "better than he did last year" is the adverb clause for the following reasons:
- It is a dependent clause: It can not stand on its own and express a complete thought.
- It modifies the verb "play" since it answers the question "How does Gary play the trombone?"
