急需英语高手分析下下面句子结构特别是那几个which
问题描述：
急需英语高手分析下下面句子结构特别是那几个which
It’s a theory to which many economists subscribe,but in practice it often leaves railroads in the position of determining which companies will flourish and which will fail.
答
It’ s a theory （ 主句 ,是主系表结构句子） to which many economists subscribe （定语从句,修饰theory） but （ 转折连词,引导并列句） in practice （介词短语作 状语）it （ 主语） often （ 副词作状语） le...determining不是动名词么，which怎么引导宾语从句？不管是谓语动词还是非谓语动词，只要是及物动词后跟的从句就是宾语从句，如，Not knowing which way he should go,he asked the police for help.