Muchharder,of course, is changing a system that let companies take the risks that led to the current financial crisis.
老师，这个句子为何可用Muchharder做主语呢，这不是形容词吗？
Muchharder,of course, is changing a system that let companies take the risks that led to the current financial crisis.
当然，更难的是改变一个让企业承担致使目前金融危机的风险的体系。
以上为表语提前句首倒装结构
改为陈述语序为下面句子
Of course, changing a system that let companies take the risks that led to the current financial crisis（主语）//（系动词） is//（表语） much harder
重点短语和结构分析如下
changing a system that let companies take the risks that led to the current financial crisis为动名词短语作句子主语
a system为动名词changing的宾语成分
that let companies take the risks that led to the current financial crisis为定语从句修饰动名词changing后面的的宾语“a system”
that led to the current financial crisis为定语从句修饰定语从句的中的名词“the risks”
let sb/sth do sth 让..做某事
lead to 致使，引起
