This document discusses verb tenses and how they are used to indicate when actions occur. It explains the simple past, present, and future tenses. The simple past tense uses verbs ending in "-ed" or irregular forms to show actions that have already happened. The simple present tense is used for repeated or habitual actions, general truths, or future times. It discusses rules for adding "-s" or "-es" to verbs based on the subject. The simple future tense uses "will" or other helping verbs to show actions that have not happened yet. Examples are provided to illustrate the different tenses.