kinds of food为何food不加s?

kinds of food的food要不要加s 是different kinds of food 还是different kinds of food s some food和some kinds of food的区别? There are many kinds of food… The store many ( )kinds of delicious food. all kinds of food here---(be)nice. mang kinds of food 还是foods 语法some of the food tastes good .为何+s 是all kinds of food 还是all kinds of foods? different food.food要加s吗? all kinds of 后名词复数?那为什么加drink和food要all kinds of foods 和all k food与foodsWe must have the right kinds of food.kinds of是各种各样