头发 英语单词怎么说

头发在英语中通常称为"hair." 例如：
I need to brush my hair before I go out.
She has beautiful long hair.
He has a full head of hair.
My hair is getting a little bit long. I think I need a haircut.
注意："Hair" 是不可数名词，所以不能用 "a hair" 或 "an hair"，只能用 "some hair" 或 "a lot of hair" 等修饰词。