Theproportion ofone amounttoanother is the relationship between the two amounts in terms of how much there is of each thing.
融合性关系代词的特点是:这个代词本身既充当先行词,又充当关系代词。how much 不拥有这个特征,故不是融合性关系代词。它只是一个含有how 的疑问代词(或疑问副词)而已。以下句子才是:
I cant agree with what he said.
=I cant agree with the thing that he said.
Whoeverdidthiswillsoonerorlaterbecaughtandwillbepunished.
=Anyone who didthiswillsoonerorlaterbecaughtandwillbepunished.