■ hair

通常是不可数名词，只用单数。

• His hair is black.他的头发是黑色的。

但是也可以作为可数名词指一根根的头发。

• So why has he got two blonde hairs on his jacket?那么为什么他外套上有两根金色头发呢？

• proper
• proper side of the tracks
• propose
• protest
• proud of flesh
• prove
• provide
• provided
• provisions
• prudent
• prudential
• prudent 与 prudential
• public school
• purge
• purposefully
• purposefully 与 purposely
• purposely
• put on
• put on 与 wear
• quarter
• queen
• question
• quick
• quiet
• quite