Sentences are the basic units of expression whereas expression is the ultimate target in the grammatical research 参照公理方法建立汉语语法的学科体系，应着眼于语法整体来确定其初始概念。
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It evaluates the advantages and disadvantages of three approaches : the axiomatic approach , the welfare approach and the multi - dimensional approach 文章重点讨论了基于公理方法、福利方法的贫困测度和多维度的贫困测度，分析了各种贫困指数的构造、优缺点和适用性。
