关于“Though the sore being healed,yet a scar may remain.”的语法问题

问题描述:

关于“Though the sore being healed,yet a scar may remain.”的语法问题
Though the sore being healed,yet a scar may remain.
伤口虽然痊愈,却可能留下伤疤.
请问the sore being healed是属于哪种语法运用?
为什么不用the sore have been healed?

这个就我们平时讲得最多的虚拟语气了,是对一种情况的假设或虚拟,如果用the sore have been healed就是真实条件句了,后面的主句就不对了.