'what are u up to?你怎么了？what's up怎么了, 發生什么啦？
1 你怎么了？２ 怎么啦？／發生什么事啦？
'what are u up to?' means 'what are you doing?''whats up' means 怎么了? OR 怎么回事?
最近好么？ /最近怎么樣啊?
