Cách sử dụng
"You don't say!" is an expression used to show surprise or disbelief in something, often in a sarcastic way. It can be used in situations where someone states something obvious or predictable. For example, if someone says "I just found out that water is wet," you could respond with "You don't say!" to show that you find their statement to be extremely obvious. It is usually used in casual conversations with friends or family rather than in formal situations.