Cách sử dụng
The expression "be/go/keep on about something" is used when someone talks about the same thing repeatedly or excessively. It is often used to indicate annoyance or frustration with the person's behavior. For example, if someone keeps talking about their diet and exercise regimen, you might say, "She's always going on about her diet and exercise." Similarly, if someone is constantly talking about a specific hobby, you could say, "He won't stop going on about his stamp collection." The expression can be used in both positive and negative contexts, depending on the tone of the speaker and the subject of the conversation.