那头牛英语

There is a chattle eating grass under the tree.

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

直接a cow....head在英文里面没有这个计量单位。那是中式的。你直接a cow 就行了

那头牛在四周吗Is the cow around？肯定回答 Yes，it is否定回答 No，it isn’t

a/one head of cattle; a cow; a bull都可以。她想最后能买一头牛。 She eventually wanted to buy a cow.