food 和foods 的区别及用法：
1、表示泛指的食物或食物总体时是不可数名词[U]
如：a shortage of food食物短缺
2、表示固体的食物时是不可数名词[U]
如：Without food and drink we cannot survive for long. 没有食物和水我们活不了多久。
3、表示特定的食品时是可数名词[C]
如：health foods保健食品
baby foods 婴儿食品
frozen foods冷冻食品
sea foods 海鲜
拓展资料
food
1、Enjoy your food.
用餐愉快。
2、It's not like you to be off your food.
胃口不好，这可不像你了。
3、Lord Fraser's speech offers much food for thought
弗雷泽勋爵的讲演发人深省。
4、Developments in your career may give you food for thought.
事业上的发展可能会引发你很多的思考。
5、Supplies of food and medicines are inadequate
食物和药品供应不足。
foods
1、Fibre is found in cereal foods, beans, fruit and vegetables.
谷类食品、豆类、水果和蔬菜中含有纤维素。
2、Foods that contain only medium levels of sodium are bread, cakes, milk, butter and margarine.
含钠量仅为中等水平的食物有面包、蛋糕、牛奶、黄油和人造黄油。
3、They tend to buy cheap processed foods like canned chicken and macaroni.
他们往往会买便宜的加工食品，像鸡肉罐头和通心粉之类的。
4、Avoid unhealthy foods such as hamburger and chips
不要吃不健康食品，如汉堡和薯条。
5、Common foods which cause this kind of reaction are fish, eggs, and shellfish.
引发这种不良反应的常见食物包括鱼、蛋和贝类。