hair在什么情况下加s

hair用来一根一根数头发的根数时，采用复数形式 hairs。

hair的常用短语：

get in sbs hair

keep ones hair on

let ones hair down

make sbs hair stand on end

相关介绍

hair的用法大全：

hair的用法1：hair指“(人、动物的)毛，茸毛，汗毛”时是可数名词,可与数词连用表示具体数量(如几根),也可用a few, many, several等修饰表示不定数量。

hair的用法2：hair泛指“头发”时,指人的整个头发,是集合名词,不可数。、

hair的用法例句：

1. She walked forward and embraced him and stroked his tousled white hair.

她走上前拥抱他并轻抚他凌乱的白发。

2. Applying the dye can be messy, particularly on long hair.

涂抹染发剂可能会搞得一团糟，特别是长发。

3. His long, uncovered hair flew back in the wind.

他那露在外面的长发随风向后飞舞。