The document discusses the difference between the present simple and present continuous tenses. It provides examples from a documentary about fast food to illustrate when each tense is used. The present simple is used for habitual or repeated actions, like "Each day, one in four Americans visits a fast-food restaurant." The present continuous is used for actions happening now or around now that are temporary, like "And this hunger for fast food isn’t just in America. It is happening on a global basis." The document also contains further examples and explanations of how to form the present simple and present continuous tenses.