饮食：food and drinks drinks为什么要加s?

饮食：food and drinks drinks为什么要加s? They like different food and drinks.这里的food要加s吗? 为什么“Are they healthy food and drinks?”中的food没有加s,而drink却加了s? 为什么soft drinks 要加s She drinks milk 为什么drinks 要加s,又不是复数 Juice and water are healthy drinks,drink为什么要加s,water ,juice, American Food and Drinks译文! food and drinks有哪些 - Let's take some food and drinks for our camp.- food and drink 与food and drinks a dialgoue about food and drinks they sell things l___ food and drinks