The document provides examples and explanations for the proper uses of various verb tenses and structures in the past tense in English, including the simple past, past progressive, present perfect, used to, would, past perfect, and past perfect progressive. It explains that the simple past is used for specific past actions or events, the past progressive for ongoing past actions, the present perfect for indefinite past actions, used to for past habitual actions, would for repeated past actions, the past perfect for past actions before other past times, and the past perfect progressive for past ongoing actions before other past events. Examples are given for each.