求解语法：The decisions facing the competitive firm
问题描述：
求解语法：The decisions facing the competitive firm
这是曼昆的经济学教材里面的标题,中文意思是“竞争性企业所面临的决策”.但根据英文的语法分析,感觉还是不懂它的结构,求解!
答
The decisions facing the competitive firm.= The decisions are facing the competitive firm.
因为标题常常要节省篇幅,只要能读懂,常常会省略不影响阅读理解的词.Decisions在句中是作为主语啊。The decisionsfacing the competitive firm..= The decisions that / which are facing the competitive firm.The decisions在此做标题只是一个【名词】，简捷。后面的 facing the competitive firm是现在分词短语做定语，修饰先行词The decisions。后面的定语从句的that/which=The decisions, that / which 在定语从句中做【定语从句的主语】。