are you finished

Are you finished?句子是什么结构 有这种说法吗?Are you finished? Are you finished?有这种说法吗? 你们完成了吗是are you finished 还是 have you finished 还是什么? are you finished packing yet?这里的finished是形容词是么? lf you are finished then press "submit" under mcnu! Yon cannot log-in because you are not finished identificatio when you are finished drinking有语病吗? are you finished watching TV?这句子英文语法对么? are you finished with that marketing book i lent you.为什么用wit Have you finished-----? har you finished是什么意思