那头牛英语怎么说

不一样这是一头牛英语：This is a cow这头牛英语：the cow

cow是奶牛buffalo是野牛cattle是家里养的牛

In India，the cow is a sacred animal.在印度，牛是一种神圣的动物 Do you know how to milk a cow?你知道怎样挤牛奶吗？ I'm sure it was deliberately done to cow us.我确信，这是在精心策划后恐吓我们可见cow有牛（可数名词）和恐吓（及物动词）等意义，所以用a cow是正确的

不可以，一头牛a cow，这一头牛the cow