题目内容
20．This Sunday is an important day for my parents．We'll celebrate it because they________for twenty years．（ ）| A． | have married | B． | got married | ||
| C． | are married | D． | have been married |
分析 这个周日对我父母来说是一个重要的日子．我们将会庆祝它，因为他们结婚20年了．
解答 答案：D 根据for twenty years可知，for+一段时间通常是现在完成时的标志，表示结婚已经延续20年了；所以此处应用现在完成时，即have/has+过去分词，且要使用延续性动词．又知 marry意为结婚，属于非延续性动词，其延续形式为be married．又因they是第三人称复数形式，所以此处应用结构为have+been+过去分词．综上所述，此处应用have been married．故选D．
点评 此题考查现在完成时的用法．做题时，找出时间词判定时态，确定时态的句型结构，再根据已有的知识储备确定谓语动词的变化形式．
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