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---The window is dirty.
---I know. It ______ for ages and I’m considering giving the task to our children.
A.hasn’t cleanedB.hasn’t been cleaned
C.wasn’t cleanedD.didn’t clean
B

试题分析:考查时态语态:句意:--这个窗户很脏。--我知道,已经很长时间没擦了,我在考虑把这个任务给孩子们。可知窗户是过去到现在很长时间没有被擦,用现在完成时的被动。选B。
点评:英语中的时态主要由动词的形式决定,因此在学习英语时态时,要注意分析动词形式及具体语境,想象在那个特定的时间动作所发生的背景,这个动作是经常性动作、一般性动作、进行性动作、完成性动作还是将要发生的动作。这题关键是for ages这个时间。是和现在完成式或现在完成进行时连用。
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