food既是可數(shù)名詞又是不可數(shù)名詞。僅僅指"食物、食品"的時候是不可數(shù)名詞。強調(diào)食物的種類時就是可數(shù)名詞。
例句：
Some food can not be stored.
有些食物不能貯存。
I would like to order some food.
我想點些食物。