The document is a collection of sentences from an English lesson on using the future tense. It includes examples of using "going to" to indicate future tense, such as a comic strip where a caterpillar says he's "going to turn into a butterfly". It also discusses how the future tense shows an action that will happen, and how it is formed with "will" or "shall" plus the simple verb form, or "am/is/are going to" plus the verb. Students are given exercises to practice using future tense, such as providing future tense verbs for time expressions like "tomorrow morning".