This document discusses regular and irregular verbs in English. It provides examples of regular verbs like "work" and "dance" which follow the rule of adding "-ed" to the base form to make the past tense. It also lists some common irregular verbs like "be", "go", "come", "see", and "have" along with their past tense forms. The document explains that irregular verbs do not follow the regular pattern of adding "-ed" but instead have unique past tense forms, like "drink" becoming "drank" rather than "drinked".