it might have been that Righty woke up,but Lefty doesn't wake up,doesn't survive the operation.have been这里怎么理解that是表语从句么doesn't survive the operation.的主语是什么
问题描述：
it might have been that Righty woke up,but Lefty doesn't wake up,doesn't survive the operation.
have been这里怎么理解
that是表语从句么
doesn't survive the operation.的主语是什么
答
have been这里怎么理没有实义 过去完成时
that是表语从句么：不是
doesn't survive the operation.的主语是什么：Lefty
答
might have been 情态动词表对过去情况的猜测
that Righty woke up, but Lefty doesn't wake up,doesn't survive the operation是be的表语从句doesn't survive the operation与doesn't wake up并列，是Lefty的谓语
答
might have been是对过去发生事情的一种推断,翻译为“可能是...”
that Righty woke up是表语从句,而it是虚主语；
doesn't survive the operation.的主语是Lefty这个人