food、fruit 到底是不是复数名词？ 什么时候用复数形式，什么时候用本身？

Question

如题所述

Answer 1

表示单纯的食物、水果时不可数
比如
I'm hungry. I want some food.
There is some fruit on the table.

表示几种食物、水果时可数
We have a lot of foods. Fish, meat, chicken, which one would like?
All kinds of fruits are available, including apples, pears, peaches, bananas and oranges.

Answer 2

通常为不可数名词，但若指不同种类时，则通常使用复数。