Type the participial phrase from the sentence below.

Serving as a mentor for a fourth-grader, I have had a year both challenging and rewarding.

Serving as a mentor for a fourth-grader, I have had a year both challenging and rewarding.

A participle is a verbal ending in - ing (present) or - ed, - en, - d, - t, - n, or - ne (past) that functions as an adjective by modifying nouns and pronouns. A participle phrase begins with a participle.

In the sentence, the participle phrase modifies the noun 'year'.