What are you up to什麼意思

"What are you up to?" is a common English expression that means "What are you doing?" or "What's going on with you?" It's often used as a casual greeting or to inquire about someone's current activities or plans. The phrase "up to" means "engaged in" or "involved in," so "what are you up to?" is essentially asking about what someone is currently involved in or doing. It's a friendly way to start a conversation or to show interest in someone's activities.