1. The document discusses different ways to express future tenses in English, including will, going to, the present tense, and future perfect. 2. Will is used for instant decisions, predictions based on assumptions, and promises. Going to is used for future plans and intentions, and predictions based on observable evidence. 3. Other examples given are using the present and present progressive tenses with schedules, the future progressive for ongoing future actions, and future perfect for completed future actions.