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11．---I heard the phone ringing in the office next door．
---You         it．They haven't got a phone yet．（　　）
A．couldn't hearB．couldn't  have heard
C．didn't hearD．wouldn't  have heard

分析 -我聽到隔壁辦公室電話一直在響．
-你不可能聽到的．他們還沒有電話呢

解答 答案是B．考查虛擬語氣，根據后句可知此處是否定對方的話，是對過去的一種否定推測，用"情態(tài)動詞+have done"，couldn't have done"不可能做過某事"，答案選B．

點評 虛擬語氣是高考經�？疾榈膬热�，也是英語學習中的一個難點．虛擬語氣用于表示說話人的假想、建議或主觀愿望，所表示的假設并不是事實，而是不可能或是不大可能發(fā)生或實現的，除了掌握if條件句引導的虛擬語氣之外，還要掌握一些與虛擬語氣有關的固定句型結構，首先，判斷是否需要使用虛擬．其次，結合虛擬語氣句式，判斷需使用何種時態(tài)及句式是解題的關鍵．關于推測要掌握對于現在、過去的肯定否定推測．

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