food可数还是不可数用法是什么

　　food：n.食物;(某种)食物，复数： foods

　　例句：

　　That ought to be enough food for the four of us.

　　这些食物应该够咱们四个人吃了。

　　Particles of glass had been introduced into the baby food.

　　这种婴儿食品中被掺进了玻璃碎屑。

　　The food was not fit for human consumption.

　　这食物不适合人吃。

　　The government has introduced some tough new laws on food hygiene.

　　政府对食物卫生出台了一些强硬的新法规。