15. Had the governments and scientists not worked together , AIDS-related deaths since their highest in 2005.
参考答案
D
2016_浙江卷
15. Had the governments and scientists not worked together , AIDS-related deaths since their highest in 2005.
D
【答案】D
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【解析】
试题分析:句意:如果政府和科学家不共同努力,艾滋病相关的死亡就不会从2005年的最高点下降。使用虚拟语气,if 条件句用的 had done,而且省略it,将 had提前,主句用would have done表示对过去情况的虚拟。故选D。
考点:考查虚拟语气。
【名师点睛】if的虚拟语气非常重要,首先要熟悉基本用法:1、表示与现在事实相反的情况,从句:If主语+过去时(be 动词用 were);主句:主语+should/would/could/might+do: 2、表示与过去事实相反的情况,从句:If 主语+had+done;主句:主语+should/would/could/might+have done 3、表示对将来情况的主观推测,从句:①if+主语+were to do②if+主语+should+do ③if+主语+did(动词过去式)/were ;主句:主语+should/would/could/might+do,另外要注意从句也可以省略 if,把 had,were,should 提前。这句话的虚拟语气比较明显,if条件句省略了if,将had提前,说明使用了过去完成进行时和过去相反,学生看出这点就容易做题了。