food表示某种可吃的食物时，为可数名词，后面需要加s。food既可数，也不可数。food指“食品，食物，伙食，养料”的统称时，是不可数名词。food还可用于比喻，指“被人思考的东西”“精神食粮”，是不可数名词，常与介词for连用。

Wash your hands thoroughly with hot soapy water before handling any food.

在拿吃的之前，用热肥皂水把手好好地洗干净。

The shallow sea bed yields up an abundance of food.

浅海床提供了丰富的食物。

Flavored coffee is sold at gourmet food stores and coffee shops.

花式咖啡可在美食店和咖啡店买到。

Be particularly fastidious about washing your hands before touching food.

接触食物前尤其对洗手不能有半点马虎。

I have always had an enquiring mind where food is concerned.

我在吃的方面一向很爱探究求索。