人教新课标高中英语必修三:Unit2 Healthy eating-Words and expressions
人教新课标高中英语必修三:Unit2 Healthy eating-Words and expressions第3页

 food是一般指凡能吃能喝的具有营养的东西, 是不可数名词; 但表示种类时是可数名词。 The doctor has ordered me a special diet. Too many sweet foods will make you fat. <导与练> p14