hair是可数名词吗

hair这个词既可以是可数名词，也可以是不可数名词，只是含义稍有变化。

1、作为可数名词，是指一根一根的“头发”或“毛发”Look at this,a hair in my soup.瞧，汤里有根头发。

2、作为不可数名词“头发”的总称，是集合名词I’ll have my hair cut.要去理发。

I get some grey hairs but I pull them out.

我有几根白发，但我都拔掉了。

Don\'t split hairs. You know what I\'m getting at.

别钻牛角尖了。你知道我指什么。

He was afraid the dog\'s hairs might dirty the seats

他担心狗毛弄脏了座位。

Did she use to have long hair?

她过去留长发吗？

Mary\'s red hair always made her conspicuous at school.

玛丽的红头发在学校里总是很惹眼。

Did you see the length of his hair?

你看见他头发有多长吗？