The document discusses the different question words used to ask questions in English. It explains that who, where, and what are used to ask about people, places, and specific things. How is used to ask about the way something happens or someone's health. How many and how much ask about quantities, with how many only used for countable nouns and how much used for uncountable nouns and prices. What time asks for the hour, when asks about a specific time or period, and why asks about the reason for something.