有具体的题么?
定语从句在句中做定语,修饰一个名词或代词,被修饰的名词,词组或代词即先行词.定语从句通常出现在先行词之后,由关系词引出.
当 being 为助动词时,非谓语动词结构 being ... 可用作主语、宾语、宾语补足语、状语等,也可用作定语.如：
The house being built is our new library. 正在建的房子是我们的新图书馆.
That picture of the children being talked to by the Prime Minister is wonderful. 那张小孩子们正在聆听首相谈话的照片照得非常好.