问题描述：
帮帮忙分析一下这个句子的句子成分,是有关“no...more...than”的句子.
原句是There is no social problem it is more incumbent upon us to understand than this of the role of custom.(Patterns of Culture,by Ruth Benedict)没有比"风俗的作用"这种社会问题更迫切需要我们了解.
"no...more...than" 有 "没有比……更……" 之意.
原句是There is no social problem it is more incumbent upon us to understand than this of the role of custom.(Patterns of Culture,by Ruth Benedict)没有比"风俗的作用"这种社会问题更迫切需要我们了解.
"no...more...than" 有 "没有比……更……" 之意.
问题解答：
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