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    精英家教网 > 高中英语 > 题目详情
    I apologize if I__________you，but I assure you it was unintentional(无意的).?
    A．offendB．had offended?
    C．should have offendedD．might have offended?
    B?
    此题要求在if从句中选择适当的动词形式，以主句中的动词apologize(抱歉)来看，if从句中表达的内容应该是过去做的事，因此可以排除 A，因为 A项是现在时。 C项中should+have+过去分词结构表示本来应该做却没有做的事，在此不合题意。D选项中的might+have+过去分词表示对过去发生的事情很不肯定的猜测，它表达的内容还不能成为事实，所以借此道歉真是不知从何说起，因此此处也不合题意。 B项had offended表示当时已经发生了的动作。这是复杂条件句：apologize 是现在，而条件句是表示对过去假设的条件句。
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