This document discusses the differences between using "will" and "going to" when talking about the future in English grammar. It explains that "will" is used to express voluntary actions, promises, and predictions, while "going to" is used to express plans and predictions. Examples are provided for affirmative, negative, and interrogative sentences using both "will" and "going to" in their proper contexts. Links are included for a video and image sources that provide further explanation and examples.