郑玄治学严谨，注释诸经，所下论断，皆有所据，决不臆造。他的《毛诗笺》既重视字、词、名物的训释，又注意章句的析义。其训释的体例如下。一、释词（一）释词有依据。1．宗《尔雅》而不注出处。如《诗·大雅·下武》：“昭兹来许，绳其祖武。”《笺》云：“兹，此；来，勤也 Zheng Xuan scholarship rigorous, comments by the scriptures, under the judgment, are based on, never imagined. His “Mao Shi Jian” not only emphasizes the explanation of words, words and famous objects, but also pays attention to the analysis of the chanters. The explanation of the body as follows. First, the interpretation of words (a) interpretation of a basis. 1. Case “elegance” without noticing. Such as “Poetry Taiga Wu under the”: “Zhaoxi promise, rope its ancestral Wu.” “Note” cloud: "hereby, this;