询对方意见；第二、三人称陈述句中则表示说话人给对方的命令、警告、允诺、威胁等。根据语境，此处A项正确。
答案：A
28．(2009·天津高考)This printer is of good quality. If it ________ break down within the first year, we would repair it at our expense.
A．would B．should C．could D．might
解析：should此处是表示与将来事实相反的虚拟语气。should此处意为“万一”。句意：这台打印机质量很好。如果一年之内出故障的话，我们免费维修。
答案：B
【二年模拟】
29．(2011·北京练习)Hiking trips sound exciting, but actually they ________ be uncomfortable and even dangerous.
A．will B．should C．must D．can
解析：句意：徒步旅行听起来很动人，但实际上它们会令人很不舒服，甚至会很危险。will将要；should应该；must必须；can用于肯定句中可表示客观的可能性，故选择D项。
答案：D
30．(2011·浙江测试)I don't think a tennis bat ________ be so expensive. Is there any room for bargaining?
A．may B．should C．must D．need
解析：句意：我觉得一个网球拍不应该这么贵。根据语意此处应用should“应当”，表示推测。故选B项。
答案：B
31．(2011·江西调研)—Is he coming by bus? —I'm not sure. He ________ come by car. A．can B．must C．need D．might
解析：此处表示的是不太肯定的推测，故用might。 答案：D
32．(2011·山东调研)—Is Jack on duty today? —It ________ be him; it's his turn tomorrow. A．mustn't B．won't C．can't
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D．needn't
解析：根据答语的后半句可知“一定不是他值日”，can表示推测时经常用于否定句或疑问句中。mustn't表示禁止，不能用来表示推测。
答案：C
33．(2011·北京期末)Cathy went to the hospital alone. If she had told me about it, I ________ with her.
A．had gone
B．would have gone C．would go D．went
解析：根据题意可知，这是表示与过去的事实相反的虚拟条件句。从句用“had told...”，主句应用“would have gone…”，故B项正确。句意：凯茜一个人去医院了。如果她告诉我，我就和她一起去了。
答案：B
34．(2011·陕西质检)—My dog is really fat. —You ________ have given her so much meat. A．wouldn't B．shouldn't C．couldn't D．mustn't
解析：根据对方的信息“我的狗实在太胖了”可知，答语的句意为“你不该给她吃那么多的肉”。shouldn't have done表示“本不该干某事”；wouldn't have done表示“不会干了某事”；couldn't have done表示“本来不能干某事，不可能已干了某事”；mustn't一般不与have done连用。
答案：B
35．(2011·河南质检)—Who is late for class again? —________ you ask? Tim, of course. A．Can B．Would C．Could D．Need
解析：第一个问“谁又上课迟到了？”根据答语的第二句“Tim，of course.”可知，空白处填Need。“还需要问吗？当然是蒂姆了。”
答案：D
36．(2011·山东质检)—They ________ have prepared for the meeting more carefully. —But they didn't. What a pity! A．shouldn't B．can't C．may D．ought to 解析：句意：——他们本该更细心地准备会议的。——但他们没有这样做。真可惜！ought to have done表示过去本该做某事而未做。
答案：D
37．(2011·北京监测)Car seat belts save lives. Every driver ________ wear one to ensure
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their safety.
A．should B．can C．may D．might 解析：句意：汽车安全带可以挽救生命，每一个司机都应该系安全带来确保他们的安全。should应该；can能够；may可能；might或许。通过题干可知为“应该”系安全带，故选择A项。
答案：A
38．(2011·哈师、东北、辽宁联考)—I want someone to write the composition for me. —No! As a student, you ________ depend on yourself. A．shall B．will C．can D．may
解析：shall 用于主语是第二人称或第三人称的陈述句中表示允诺和警告。此处表示警告：作为一名学生，你“必须”依靠你自己。
答案：A
39．(2010·天津质检)My suggestion is that you ________ much meat. A．wouldn't take B．shall not take C．not have D．won't have
解析：当suggest或suggestion为“建议”的意思时，与其有关的从句就要用虚拟语气，即“should＋动词原形”，should可以省略。
答案：C 40．(2010·福建质检“)Attention, please. Whoever can answer one of my questions ________ receive a prize.”the teacher said in class.
A．might B．shall C．should D．would
解析：shall用于第二或第三人称时，可以表示警告、命令、允诺、威胁等语气；might表示可能性很小；should表示“应该(义务性)”；would表示意志(意愿)。这里选B项表示允诺。
答案：B
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