— 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

試題分析:考查時態(tài)和語態(tài)。本題只使用了現(xiàn)在完成時,表示過去發(fā)生的事情對現(xiàn)在的影響。現(xiàn)在完成時還可以表示過去發(fā)生的動作持續(xù)到現(xiàn)在。句意:—房間很臟!抑馈7块g已經(jīng)幾個星期沒有被清洗了。說明過去發(fā)生的事情對現(xiàn)在有了影響,也要使用被動語態(tài)。故D正確。
點(diǎn)評:現(xiàn)在完成時表示過去發(fā)生的事情持續(xù)到現(xiàn)在,或者表示過去發(fā)生的事情對現(xiàn)在的影響。要區(qū)別與一般過去時,一般過去時只表示過去發(fā)生過這樣的事情,沒有對現(xiàn)在的影響。
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