“情态动词 +ｈａｖｅ +过去分词”结构的意义和用法在英语考试卷中经常见到。有的考生由于对此缺乏深刻的理解 ,难于作出正确的判断。因此 ,有必要对此结构及其用法作一简要归纳说明。一、表示说话人认为过去某事发生的可能性最大时 ,用“ｍｕｓｔ+ｈａｖｅ +过去分词” ,意为 The meaning and usage of the structure of the “mood verb +have + past participle” is often seen in the English test paper. Some candidates are difficult to make correct judgments due to lack of a deep understanding of this. Therefore, it is necessary to give a brief summary of this structure and its usage. 1. When the speaker thinks that the past is most likely to happen, use “must+have + past participle” to mean