being done修饰名词作定语时，表示一个被动的动作正在进行，例如。The problem being discussed is of much importance.正在被讨论的问题很重要（摘自《网易有道词典》）（本句中，being discussed作the problem的定语，the problem和discuss 是被动关系，而且discuss的动作正在进行）。The meeting being held now is very important.现在正在开的会议很重要（本句中，being held作the meeting的定语）。being done作定语例句。答：例句如下：The girl being beaten is my sister。