This document contains a chapter about verb tenses and time clauses in English. It includes examples of questions using words like where, why, when and what time in the simple past tense. It also discusses irregular verbs in the past tense. Sections cover using before, after and when in time clauses, the present and past progressive tenses, and the difference between the simple past and past progressive. Practice exercises with answers are provided to help learners practice these grammar points.