问题标题:
Withoutelectricityhumanlife____quitedifferenttoday.A.isB.willbeC.wouldhavebeenD.wouldbe可是为什么呢?
问题描述:

Withoutelectricityhumanlife____quitedifferenttoday.

A.is

B.willbe

C.wouldhavebeen

D.wouldbe

可是为什么呢?

荣石泉回答:
  本题是对是对现在的虚拟,所以从句用woulddo的形式,对过去做虚拟,用wouldhavedone,对将来做虚拟也用woulddo.   注:without是虚拟语气的标志,类似还有butfor
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