该词没有过去式，hair，名词词性，意思是头发、毛发，例如：
1、He still has a good head of hair.他的头发依然很多。
2、Good Lord， what have you done to your hair!天啊，你把头发弄成什么样子啦！
3、I like the way you've done your hair.我喜欢你梳的发式。
4、The stinging nettle has a square stem and little hairs.荨麻长有四方茎和细小茸毛。
