There are lots of different food here.为什么用food而did you know that some fDid you know that some foods might cause cancer?中用foods
问题描述：
There are lots of different food here.为什么用food而did you know that some f
Did you know that some foods might cause cancer?中用foods
答
There are lots of different food here. 这里指的是一般的食物，为不可数名词；
而Did you know that some foods might cause cancer? 这句强调的是食物的种类，所以用做可数。
不可数名词如fish 也有这种用法，指不同种类的鱼时，可加s看成可数的哦~~
如果想更清楚的话，百度“不可数名词”找找看看就好啦``
答
food作为食物总称时通常是不可数.
当具体到某种食物或指不同食物时,可以加s
这里的some foods指的是一些会致癌的食物
其实different food也可作different foods的~