having been done 和done作状语的区别

having been done 做状语表示该动作发生在主句动作之前；
而done则不强调这层含义；
举个例：
Having been killed,she couldn't stop her blood from going chilled.
和
Killed,she couldn't stop her blood from going chilled.
前边一句稍微强调“再她的血变冷之前她被杀的”
而后者没有强调动作先后的含义.
（需要说明一下done指的是普遍意义的过去分词而不是单纯的done）