It seemed as if the world was at an end

题目

It seemed as if the world was at an end
为什么不是It seemed as if the world were at an end?不是虚拟语气么?

答案

这里不是虚拟语气.
句子意思是：
（那时候）看起来好像世界要毁灭了一样.
因为前面用了seem的过去式seemed, 所以是发生在过去的事情,所以后面用be的过去式was.