food foods

Question

Beef and tomato are healthy food. 还是
Beef and tomato are healthy foods. 哪个对

Answer 1

Beef and tomato are healthy foods

food作为食品的统称时为不可数名词，单数形式，
指“一种食品时”可数，可以用复数。
比如I like all kinds of foods, vegitables, fruits...这里把一个food当成是一种食品，foods指各种食品。同理，vegitable,fruit等类似性质的词也一样。

关于food的详细解释：
http://www.dict.cn/search/?q=%A3%E6%A3%EF%A3%EF%A3%E4%A3%F3

参考资料：http://zhidao.baidu.com/question/55368439.html?si=1

Answer 2

应该是Beef and tomato are healthy food
food表食物种类时，才加s本回答被网友采纳

Answer 3

Beef and tomato are healthy food. 对!

Answer 4

正确的句子应该是：
Beef and tomato are healthy food.

Answer 5

food
food没有复数.是集合名词..