核心问题
She has gray 请问上面两个句子有什么区别？
词典解答
hair 用于指整个头发或毛发时, 是集合名词, 不能采用复数形式。
-
He had his hair cut. 他理了发。
-
My dog has a good coat of hair. (Palmer) 我的狗长了一身好毛。
-
Hormones also affect Jane's hair. 激素也会影响简的头发。
但是当 hair 用于表示一根根(一缕缕)头发时,则是可数名词。
-
The very hairs of your head are numbered. 你头上的头发没有几根了。
-
She found two hairs. (Palmer) 她找到了两根头发。
由上面的例子可以看出,名词的复数形式有时候是表示整体一个部分,因此其数量比单数形式少。
She has grey hair. 是指“她满头白发”，而 She has grey hairs. 则是指“她有几缕白发。”或“她长白头发了”。
练习题
请做下面的英语试题：
half a dozen/a half dozen 582
-
Ten years had elapsed, I found she had ____. A. a little white hair B. much white hair C. a few white hair D. a few white hairs(全国研考)
-
He has seen many barbers cutting human hairs and they seem to like the job well. (A) B C D (TOEFL)
-
This is an old photograph of me when I ____.