Question formation is the process of creating questions in a language. In English, this typically involves rearranging the subject and auxiliary verb, or using question words like who, what, where, when, why, and how. For example, the statement "You are going" becomes the question "Are you going?" Different types of questions serve various purposes. Yes/no questions expect a simple affirmative or negative response, while open-ended questions encourage more detailed answers. Understanding question formation is essential for effective communication and helps in gathering information or clarifying understanding in conversations.