头发是不是不可数名词：头发到底是可数名词还是不可数名词

【看题】　　

a. He must be very old. Look, he has grey ____.
b. He found some ____ in his soup.
　　

A. hair, hair B. hairs, hairs. C. hair, hairs D. hairs, hair.

【分析】
　　此题应选 C, 容易误选 A, 误认为hair永远不可数。其实hair这个词既可以是可数的, 也可以是不可数, 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.
　　你瞧, 我的汤里有根头发。
　　The cat has left her loose hairs all over my clothes.
　　猫掉的毛弄得我衣服上到处都是。
　　My father has quite a few gray hairs.
　　我父亲已有不少白发。
　　There is not a gray hair on his head.
　　他头上没有一根白头发。
　　

2. 作为不可数名词“头发”的总称, 是集合名词：
　　I'll have my hair cut. 我要去理发。
　　He has blond hair. 他有一头金发。
　　She has a beautiful head of hair.
　　她有一头漂亮的头发。
　　The woman likes to do her hair in foreign style.
　　这个女人喜欢把头发梳成外国式。
　　试比较以下句子：
　　He has grey hair. 他满头白发。
　　He has grey hairs. 他有些白发了。

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