The"No A,No B"construction can express the full affirmation proposition SAP,can also express the necessary condi-tions contain proposition ﹁ A→﹁ B.Its different logical meaning is the result of the interaction between the constants and variants.The constant items"no"and"no"express full affirmation with double negation,item A maintains the physical character or is forced to nom-inal,and item B maintains the predicate or is forced to predicate,whose logical meaning is SAP.Item A and B remain predicate or are forced to predicate,while the item"no","no"and item A,B or predicate item A and B are combined into two small sentences﹁ A and﹁ B respectively.The construction forces the two clauses to contain an implicative relationship,and their logical meaning is ﹁ A→﹁B.The construal between the two logical meanings can be based on the blocks of the construcion,the semantics of A,the semantic rela-tionship of A and B,the part of speech of item A and item B,the context and encyclopedic knowledge.