We use much in questions and negative sentences: Do you drink much coffee? I don't drink much coffee. But we do not often use much in positive sentences: I drink a lot of coffee. (not I drink much coffee) 'Do you drink much coffee?' 'Yes, a lot!' (not Yes, much)

Summary of 'much':

• Usage: Primarily in questions and negative sentences with uncountable nouns.
• Positive Sentences: 'A lot of' is preferred over 'much'.
• Short Answers: 'A lot' can be used as a short answer, not 'much'.

Key takeaway: Avoid 'much' in positive statements unless it's part of a negative construction like 'not much'.