Question

请问这道虚拟语气的英语选择题怎么做？

Had I known about this computer program,a huge amount of time and energy_____.
A.would have been saved B.had been saved C.will be saved D.was saved
请说一下理由？

Answer 1

A
理由自己百度下虚拟语气的用法，自习看看才行，这个不简单。

Answer 2

选A，had后的句子是表现在事实相反，后面也要用现在时态的虚拟语气
句子意思是，要是我懂这个电脑程序就能省下很多时间和精力了。（因为我不懂...，所以之前浪费了很多时间和精力）
希望能帮到你 呵呵 祝你进步！

Answer 3

A Had I known about this computer program=If I had known about this computer program
对过去事实的虚拟 would have done
如果我知道了这个计算机程序，大量时间和精力都会被节省
这个肯定是对过去的事实虚拟

Answer 4

选A.前半句是If I had known…与过去事实相反，主句应用完成时