011 Are you insane/crazy/out of your mind? 你疯了吗？
当看到好友或家人做了很奇怪、很反常的事情时，表示惊讶、不理解。
示例
A：I accepted his opinion.
B：Are you out of your mind? We should believe in truth.
A：我接受了他的意见。
B：你疯啦？我们要相信真理。
A：I will work hard throughout the night.
B：Are you crazy?
A：我要通宵奋战。
B：你疯啦？
