精选优质文档-倾情为你奉上高三语法第一轮复习-定语从句【知识梳理】一、关系代词的选择1 充当主语的关系代词。限制性定语从句1). Edmund Halley was an English scientist who/that lived over 200 years ago.2). A plane is a machine which/that can fly.3). Such people as were recommended by him were reliable.4). a. China is one of the nations that have made (make)great progress in reducing its population growth.b. Tom is the one of the boys who is (be) praised.用法: 1)在限制性定语从句中,who用于指人,which用于指物,that/as指人或指物均可。2) as作关系代词使用时,先行词前必