there are many different kinds of food in that place.there are foods from different areas.句意都一样为什么前一个是food后是个是foods .

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there are many different kinds of food in that place.there are foods from different areas.
句意都一样为什么前一个是food后是个是foods .

第一个food指所有食物,属于不可数名词,因此没有复数形式.
第二个food指各类食品,属于可数名词,因此复数形式为foods.

第一个food是集合名词,指所有食物,第二个food指各种各样的食物,此时不是集合名词,