This document discusses irregular verbs in the past tense. It provides examples of signal words that indicate the simple past tense, such as yesterday and last week. It then lists common irregular verbs and their past tense forms, such as sit/sat, find/found, and write/wrote. Readers are given an exercise to fill in the correct past tense forms of irregular verbs in sentences. Additional online resources are provided to help users learn and practice irregular past tense verbs.