题目内容

11．Hurry up!The play _______ for half an hour．（　　）
A．has been onB．has beganC．has begunD．had begun

分析 快点！演出已经开始半个小时了．

解答 答案：A．
根据for half an hour，可知这里是for引导的一段时间，通常和现在完成时连用，故本句使用用现在完成时态．英语完成时态中瞬间动词不能和表示一段时间的时间状语连用，begin表示瞬间动作，选项BCD都含有begin，排除掉；选项A用be动词的现在完成时形式，可以延续．故选A．

点评 英语完成时态中有瞬间动词与持续性动词之分，瞬间动词只表示瞬间动作，不能和表示一段时间的时间状语连用，反之持续性动词也是一样．再没有时间状语的情况下，就要结合语境具体分析．

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