as much junk food as you want .junk food

问题描述:

as much junk food as you want .junk food

用单数,本来food是不可数名词,而且你前面用的是much,much修饰不可数名词

food在此是不可数名词,没有复数形式!

food是单数含义,劣质食物也是单数的含义,不可以用复数.