two head of cattle,head要加s吗?可是为什么ten head of cattle 又不用加s?

two head of cattle为什么 head 不变复数 two head of cattle,head要加s吗?可是为什么ten head of cattle 又不用加s? cattle,progress,advice在使用时,有没有单复数之分.为什么说是two head of cattle而不是two cattle 200 head cattle ,200 head of cattle ,200 head cattles,200 heads of cattle? five head of cattle 还是 five heads of cattlefive head of cattle中head 加不加s? tow head of cattle 中的 head要加s吗five head of cattle 五头牛 对吗 关于cattle 这个单词是“three heads of cattle”还是three head of cattle? six head of cattle head 为什么不是复数? 200 head of cattle是还是200 heads of 10 head of cattle 为什么?10头牛 这里的head 理由是不是head与cattle 都是单复数同形? 修饰cattle的词cattle有特殊的复数形式,一般被十,百,千等整数修饰,否则用“数字+head of修饰例如,two/theer head of cattle那么请问用head来修饰是什么意思呢?翻译成什么?知道的请回答一下啦 a head of cattle 可以这样说吗?cattle 不是复数吗那 一头牛是什么 英语表示一头牛：a head of cattle.而head也是头的意思, Mr Smith bought twenty more head of cattle.这里的head 是否加s cattle是可数名词吗?如果是,那为什么要用计量词（a head of cattle） 5头牛five head of cattle ,head 不用复数啊?书上写 5头牛：five head of cattle 为什么head 不用复数啊?除了表示牛 有这种表达 还有什么动物也这样说啊 ..head of.. cattle问题cattle是一个怎么样的词?按照常理来说.如10 cups of milk.数词为复数时,量词cup也应该是复数啊.为什么是10 head of cattle.head不加s? —How many ____ does your uncle have on his farm? —Twenty, I think. A. head of cattle B. heads of cattle C. head of cattles D. heads of cattles