less是副词修饰后面的介词短语吗?

Question

This allows people to buy a variety of shares so that there is less of a risk of losing money.

1、so that there is less of a risk of losing money.这句中的用法 是不是 be+of+名词的用法呢?
2、less是副词修饰后面的介词短语吗?

Answer 1

这是there be句型，less在此是个名词，of…是它的定语。