as much as 8 hours?

题目

as much as 8 hours?
"8 hours ”是可数的啊,为什么用much呢?而不是as many as 8 hours?
我还见过一句“as much as 100 dollars” ,字典上还有“as much as 10 degrees(摄氏度)”这些都是为什么呢?
原句：he is addicted to playing computer games and spends as much as 8 hours everyday.

答案

这么写是因为把一段时间当作抽象的整体看,例如：--How much time do you spend on your study?--Eight hours.或者把温度计数当作一个整体,例如：--What is the temperature?--Ten degrees centigrade.所以形式上要配...