With economic growth has come centralization:fully 76 percen

With economic growth has come centralization:fully 76 percent of Japan's 119 million citizens live in cities where community and the extended family have been abandoned in favor of isolated,tow-generation households.随着经济的增长,出现了集中化：全国1．19亿公民,其中整整76％的人口定居城市：在这里,原来的社区和多代同堂的大家庭已被摒弃,取而代之的是与外界疏于往来的、只由两代人组成的核心家庭.请问定语该怎么知道到什么地方结束?这句话是cities where community and the extended family have been abandoned 到这里结束我知道.可为什么不能 cities where community到这里结束.定语后不能接单个单词做后置定语吗?