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英语 关于虚拟和推测的问题 大师来看下

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英语 关于虚拟和推测的问题 大师来看下
分别分析一下下面这3句话中的could have been,might not have prevented和would have talked表示的是虚拟还是推测?怎么看出来的?
1.The financial crisis -- the one that sent a shockwave through the U.S.economy and led to the Great Recession -- it could have been avoided.
2.The dissenting report also argues that even if the government had gotten involved sooner,it might not have prevented the crisis because it was a global problem
3.A lesser man would have talked under such torture.
再讲讲,如何判断一句话中的have done是虚拟还是推测?
英语 关于虚拟和推测的问题 大师来看下
此问题没有被解决,只好再提问一次,对不住了!