foods。food作為食品的統稱時為不可數名詞，單數形式；指“一種食品時”可數，可以用復數。比如I like all kinds of foods.這里把一個food當成是一種食品，foods指各種食品。

food

英[fu:d] 美[fud] n.

1.[不可數] （人或動物所需的）食物，飲料，（植物所需的）養料；固體食物

eg.They enjoy having Chinese food.

2.[可數] 指某種特定的食品食品 foods

eg.Too many sweet foods may increase your weight.吃太多的甜食可能會是你發胖。

food例句

They are at the end of their food supply.

他們的食物儲備已消耗殆盡。

Whether we need more food depends on how many people turn up.

我們是否需要更多的食物，這要視到場人數而定。

Within three days they had exhausted their supply of food.

他們在三天之內就把所有糧食吃光了。

His company offers a flexible packaging service for the food industry.

他的公司為食品工業提供靈活的包裝服務。

It seems such a waste to throw good food away.

把好的食物扔掉似乎太浪費了。