问题描述：
英语句子词分析
the paper he made was of poor quality because he followed a wrong production procedure.
请问,he made was of poor,这里头,为什么要有of,请明白的帮我详解一下类似用法,
the paper he made was of poor quality because he followed a wrong production procedure.
请问,he made was of poor,这里头,为什么要有of,请明白的帮我详解一下类似用法,
问题解答：
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