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    精英家教网 > 高中英语 > 题目详情
    — The room is dirty.
    — I know. It ______ for several weeks.
    A．hasn’t cleanedB．didn’t clean C．wasn’t cleanedD．hasn’t been cleaned
    D

    试题分析：考查时态和语态。本题只使用了现在完成时，表示过去发生的事情对现在的影响。现在完成时还可以表示过去发生的动作持续到现在。句意：—房间很脏。—我知道。房间已经几个星期没有被清洗了。说明过去发生的事情对现在有了影响，也要使用被动语态。故D正确。
    点评：现在完成时表示过去发生的事情持续到现在，或者表示过去发生的事情对现在的影响。要区别与一般过去时，一般过去时只表示过去发生过这样的事情，没有对现在的影响。
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