less of a commitment是个什么用法？

There is a widespread blief in the united states and western Europe that young people have [a small commitment to work and a carrer than their parents and grandparents] and that the source of the change lies in the collaps of the work ethic

a) a small commitment to work and a carrer than their parents and grandparents

b) less of a commitment to work and a carrer than their parents and grandparents

c) a small commitment to work and a carrer than that of their parents and grandparents

d) less of a commitment to work and a career than their parents and grandparents had

e）a lessening of the commitment to work and a career than their parents and grandparents had

想知道less of a commitment是个什么用法？以前没有看到过，羞愧：（

谢谢大牛！

 less of和more of修饰前面的动词，不是修饰后面名词的，你看白勇语法里单独

把这个拿出来讲的。

前者表示较少程度上，后者表示较多程度上。

谢谢楼上

请问

白勇语法哪一道里面讲到这个的？

谢谢谢谢