disturb

　　3. 现在完成进行时 [应用3]　(1)—I'm sure Andrew will win the first prize in the final. —I think so. He ______ for it for months. A．is preparing

　　Bwas preparing C．had been prepared

　　Dhas been preparing

　　答案：D

　　解析：从语境可知 prepare 这一动作从过去一直持续到说话时。故用 have been doing。

　　(2)She ought to stop working. She has a headache because she ______ all day long. A．has been reading

　　Bhad read C．is reading

　　Dread

　　答案：A

　　解析：主句用了一般现在时，从句强调到现在为止，一直在读书，所以用现在完成进行时。

　　(3)Cathy is taking notes of the grammatical rules in class at Sunshine School, where she ______ English for a year. A．studies

　　Bstudied C．is studying

　　Dhas been studying

　　答案：D

　　解析：凯茜正在阳光学校记语法笔记，她一直在那里学英语，到现在一年了。

　　(4)Ever since the Greens moved to the country a year ago, they ______ better health. A．are enjoying

　　Bhave been enjoying C．could have enjoyed

　　Dhad enjoyed

　　答案：B

　　解析：ever since (自从……以来)引导从句时，主句要用完成时态。本句强调“一直进行”，所以选B。

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