The document discusses simple tenses in English including present, past, and future tenses. The present tense describes current or routine actions. The past tense can describe past habits and is sometimes used like "used to." There are two forms of the future tense: "will" and "be going to." The present continuous tense describes actions in progress or future plans. The past continuous describes actions that were occurring in the past. The future continuous conveys ongoing actions that will occur in the future.