* The boy - This is the subject of the sentence.
* comes - This is the verb, indicating the action the boy performs.
* to school - This is a prepositional phrase, modifying the verb "comes".
* early - This is an adverb, describing how the boy comes to school.
* every day - This is a time phrase, also modifying the verb "comes".
Therefore, "comes" is the verb in the sentence.