标题: OG语文 SC 108 [打印本页] 作者: hlaboratory 时间: 2012-2-13 18:19 标题: OG语文 SC 108 Sound can travel through water for enormous distances, its acoustic energy prevented from dissipating by boundaries in the ocean created by water layers of different temperatures and densities. 请问这里的its acoustic energy和前面的主句并列在一起符合语法规则吗？ 作者: teddybearj4 时间: 2012-2-13 18:37 这句话后面那部分是独立主格。即，S+V+O，n.+ modifier Sound can travel through water for enormous distances, its acoustic energy [prevented from dissipating by boundaries in the ocean （created by water layers of different temperatures and densities）]. comma后面的不是一个句子，而是一个名词。