This document provides instructions on how to form sentences in the past simple tense in English. It explains that regular verbs are formed by adding "-ed" and irregular verbs use the second column form. Affirmative sentences use subject + verb, negative sentences use subject + did not/didn't + verb, and questions use did + subject + verb. Time expressions like yesterday and last year are usually used with past simple. Irregular verb forms must be learned. The verb "to be" is an exception and does not use "did" in negatives or questions.