The document discusses the use of "going to" and "will" to express the future in English. It provides examples of their use in affirmative, interrogative, and negative sentences. It explains that "going to" is used to talk about plans and predictions based on present evidence, while "will" is used for predictions without evidence, decisions made at the moment of speaking, requests, threats/promises, and expressions with "think," "guess," etc. An exercise is provided to choose between "going to" and "will" in sample sentences.