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　　IBM noted in a court filing that it had been issued more than 300 business-method patents, despite the fact that it questioned the legal basis for granting them. (2010 Text2)
　　难句分析
　　主句
　　IBM noted that
　　主语 谓语 引导宾语从句
　　宾语从句
　　that it had been issued more than 300 business-method patents
　　从属连词 主语 谓语 补语
　　同位语从句
　　that it questioned the legal basis for granting them
　　从属连词 主语 谓语 宾语 定语
　　本句是个复合句，主干IBM noted in a court filing that....其中in介词短语作定语，宾语从句中it指代IBM，第二个that引导同位语从句解释说明fact，从句中的代词them指代more than 300 business-method。
　　参考译文
　　2005年，IBM在一份案卷中发现自己被授予了300多项商业方法专利，尽管连它自己也质疑授予这些专利的法律依据。
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