to be mad about sb<非正式>(love)迷恋某人
He's mad about you.他很迷恋你。
He told her he was mad about her.他跟她说了自己很爱慕她。
5.+ rush, panic极其激动的；疯狂的
There was a mad rush for the bar.人们疯狂地冲向酒吧。
You only have an hour to complete the game so it's a mad dash against the clock.你只有一小时来做完游戏, 所以这是一场与时间的疯狂较量。