This document defines and provides examples of past participles in English. It explains that past participles are verb forms typically ending in "-ed" that are used to form perfect and passive tenses. Past participles can also be used as adjectives. The document discusses types of nouns and verbs, and how past participles can modify nouns as adjectives or in participial phrases. Examples are provided to illustrate past participles used as adjectives and in participial phrases. The document concludes by providing a link to an assessment on past participles.