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Without the timely aid from different provinces, the affected people in those areas ________ the difficulty.
A.wouldn’t overcomeB.mustn’t have overcome
C.hadn’t overcomeD.wouldn’t have overcome
D

试题分析:考察虚拟语气。本句是一个含蓄条件句,表示的与过去事实相反的虚拟语气,而且是与过去事实相反。主句中使用“情态动词+have done”的形式。句意:如果不是来自不同省份的及时帮助,在这些受影响地区的人本不会克服这些困难。根据前半句,说明是与过去事实相反,故D正确。
点评:条件句的虚拟语气是考查的重点。如果过去事实相反,条件句中使用过去完成时,主句使用“情态动词+have done”;如果主句与现在事实相反,条件句中使用过去时,be动词使用were,主句中使用“情态动词+动词原形”;如果与将来事实相反,条件句中有三种:过去时;were to do ;should+动词原形,主句使用“情态动词+动词原形”;要特别注意如果省略了if,句子要使用部分倒装的形式,把助动词,be动词,情态动词提之主语前。本句是一个含蓄条件句,根据前半句说明是与过去事实相反,故后面的主句使用“情态动词+have done”的形式。
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