人类语言的一个普遍现象为,将来时标记又进一步发展出表达各种认识情态的用法,具有估计、预测等主观估价功能。本文论证,这一发展来自将来时标记的概念内容,将来时所指的都是未发生的事件,人们对其判断往往具有很高的主观性。本文讨论的重点是英语和汉语的有关现象,尝试对表面上看起来纷纭复杂的现象作出简单一致的解释。 A common phenomenon in human language is that future time markers further develop the usage of expressing various modes of understanding, with the subjective valuation function of estimation and prediction. This article argues that this development comes from the conceptual content of future time markers. In the future, it refers to all unforeseen events, and people often have high subjectivity in their judgment. This article focuses on the relevant phenomena in English and Chinese and attempts to provide a simple and consistent explanation of seemingly complex phenomena.