“差点儿没+VP”的句式在表示否定义时,其中的“没”常被看作是一种“羡余”的成分。本文就“没”的羡余性问题进行了讨论和分析,发现“没”的羡余性的存在是有条件的,即仅仅在进行客观描述句中,“没”才呈现羡余性;而在虚拟夸张的句子中,“差点儿没”中的“没”则是必需的。继而本文从认知心理趋向的角度剖析了肯定式“差点儿+VP”只可用于客观描述句.而否定式“差点儿没+VP”却可以扩大外延,用以进行虚拟夸张的原因。 “Almost no + VP ” sentence in the definition of no definition, which “no ” is often seen as a “envy ” of the composition. In this paper, we discuss and analyze the connivance problem of “no ” and find that there is a condition for the existence of the connivance of “no ”, that is, only in the objective descriptive sentence, “no ” In the virtual exaggeration of the sentence, “almost no” in the “no” is required. Then from the perspective of cognitive psychology, this paper analyzes that affirmative “almost + VP ” can only be used for objective description, while negation “almost no + VP ” can extend the extension for virtual exaggeration s reason.