虚似语气选择题
问题描述：
虚似语气选择题
Without electronic computers, much of today’s advanced technologyachieved.
A. will not beB. would not be
C. would not have beenD. cannot have been
选什么,原因
答
选B
如果是对现在的虚拟,从句用一般过去时,主句用过去将来时
可以看一看对称的形式:
现在虚拟 did would do
过去虚拟 had done would have been done