Unless she had had an alarm clock, she would havemissed the train.(事实:她没有闹钟)
题目
Unless she had had an alarm clock, she would havemissed the train.(事实:她没有闹钟)
中两个had是什么意思?
答案
虚拟语气结构对过去的虚拟:had +动词过去分词
所以第一个had是助动词第二个是过去分词
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