This document discusses irregular verbs in English and provides examples of common irregular verbs and their past tense forms. It explains that irregular verbs do not follow the regular pattern of adding "-ed" to form the past tense. Instead, they may change their vowel sound, as in "get-got", change completely, as in "catch-caught", or remain unchanged, as in "cut-cut". It then lists many frequent irregular verbs and their past tense forms to help with learning.