一般会先说 Hey, haven't seen you for quiet some time, you look great!
然后顿一顿,上下打量对方一下 Did you lose some weight?
(说着话之前,千万确定对方是满面红光的健康状态,要是对方是病态的消瘦,你这就是往人家伤口上撒盐啊)
不要问人家是不是 On Diet, 一般人看来这属于个人隐私,因为被看作胖,需要减轻体重对任何人来说都是尴尬情。
除非人家主动谈起 you know I'm on this healthy diet...
也不要说别人Skinny, 一般没有人把这个词当成赞美,特别是说女孩子。
我常用的一个万金油的词是 fit. Hey, don't you look fit! (调侃的语气),不管对方是男是女都好用。
对于喜欢运动或健身的好朋友,也可以说 Have you been working out lately?
我:hi nick!
他:hi XX (my name). how have you been.
我:i am all right. still writing my thesis. just one chapter to go. how's your break? did you go anywhere?
他:no. actually I didn't. I've been working 6 days a week.
我:You lost weight?
他:yeah, i've been training these days.
.
.
.