求帮分析这定语从句.
问题描述：
求帮分析这定语从句.
John is the only one of the boys who—the piano well.A plays B play C playing D are playing请问选哪个,麻烦详细解释一下我对这些还很陌生.
答
John is the only one of the boys who—the piano well.A plays B play C playing D are playing选A定语从句先行词结构是“one of the +复数名词”,引导词充当主语时,谓语用复数形式；定语从句先行词结构是“the (o...