connected with what did not happen or what is not the case 反事实的;虚拟的 counterfactual questions such as ‘What if the President had not been assassinated?’ “假如总统没有遇刺会怎么样?” 之类的反事实问题 an interesting exercise in counterfactual history 假设历史并非如此的一个有趣活动 a counterfactual approach to historical events using ‘What if?’ questions 一种反事实的历史事件方法,使用“如果呢?问题