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    16．Had I spent more time in preparing for the exam，Iwouldn't have failed （in/on） it．（fail）
    要是我多花点时间准备这场考试，我就不会不及格了．

    分析 要是我多花点时间准备这场考试，我就不会不及格了．

    解答 答案：wouldn't have failed （in/on）．考查虚拟语气．Had I spent more time in preparing for the exam表示"要是我多花点时间准备这场考试"，这是一个表示跟过去事实相反的说法，省略了If，用了倒装，所以主句用wouldn't have failed （in/on）．

    点评 考查汉译英．
    虚拟语气里，如果表示与过去事实相反的情况
    从句用：主语+had+done
    主句用：主语+should/would/could/might+have done　
    eg：
    1． If I had got there earlier，I should/could have met her．如果我早到那儿，我就会见到她．（事实：去晚了）
    2．If he had taken my advice，he would not have made such a mistake．如果他听我的劝告的话，就不会犯这样的错误了．（事实：没有听我的话）

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