I like foorball . 为什么football不加s

I like foorball . 为什么football不加s three boys like playing football中的like为什么不加s Do you like football?football后为什么不需要加“s” I like football.football 不加s是不是因为,它在这里是作“足球运动”讲得原因?那是I like i would like cabbage为什么这里不加s,而i like cabbages中要加s? like a football.football是球类,应该不加冠词,为什么前面还加 Tom likes playing football 这里play为什么要加ing 还有like为什么加S I like apples.为什么apple加s he is like his father 为什么like不加s he is like his father.为什么like不加s 为什么she would like中like不加s What is your favonte fruit?为什么FRUIT不加S呢.I like bananas best.