“才怪”句在当今语言交际中出现频率很高,有着特定的语用价值。我们认为,“才怪”具有表否定的意义,带有固化倾向;“才怪”句是复句的紧缩形式;“才”标示假设和条件两种关系,是跨因果类的标志复现。本文描述了“才怪”句的使用概貌,根据北京大学CCL现代汉语语料库对“才怪”的否定义进行了数据统计分析,从韵律和经济性的角度分析了“才怪”紧缩句,并从主观视点的角度分析“才怪”句所显示的两种复句关系,最后说明其语用价值和语用环境。 “Strange” sentence in today’s language communication in the high frequency, has a specific pragmatic value. In our opinion, “only strange ” has the meaning of table denial, with a curing tendency; “strange” sentence is the tightening form of complex sentences; “only ” indicates the hypothesis and the condition of the two relations, Reproduction of the sign. This paper describes the use of “strange” sentence, according to the Peking University CCL modern Chinese corpus on the “strange” the definition of no statistical analysis of the data, from the perspective of rhythm and economic analysis of the “strange” “Contractions, and from the subjective point of view, we analyze the relationship between the two kinds of complex sentences shown in the” strange "sentence, and finally explain its pragmatic value and pragmatic environment.