以“事物首现”为视点,探讨“他不小心把一个杯子打破了”类的无定式把字句的存在理据。“把”后“一量名”具有“说话人已知、听话人未知”的信息特征。无定式把字句不能表达祈使语气,在现代汉语中是受限制的格式,它实际上是一种扭曲现象,它必须同时满足事物首现、把字句句法、听说双方未知已知对立等不同方面的要求,正是因为无定式把字句具备这种能力,还具有一系列的语用价值,它才得以存在于现代汉语之中。 From the point of view of “the first thing in things”, we explore the argument of the existence of infinitive words in the category “He accidentally breaks a cup.” “After ” “a name ” has “the speaker’s known, obedient unknown ” information features. It is actually a kind of distorting phenomenon. It must satisfy the first occurrence of things at the same time. It should be different from the syntax of words and sentences and the unknown opposition between two parties Because of its indefinite ability to possess words and sentences, but also has a series of pragmatic values, it can exist in modern Chinese.