近年来话语词的研究越来越引起学者们的兴趣和重视。在言语交际中话语词不影响命题的内容,但无论在语句的生成和理解方面,还是在语言的掌握方面,它们都起着非常重要的作用。话语词的使用离不开交际主体的语用意识,它传递的不是命题意义,而是为话语理解提供信息标记。“不确信”话语词属于情态话语词,它主要标记说话人对于所表述的命题内容的不确信和怀疑。本文对俄语的该类话语词进行分类,并对它们在语义和语用上的不同特征进行论述。 In recent years, the study of words has drawn more and more scholars’ interest and attention. Words do not affect the content of propositions in verbal communication, but they play an important role both in the formation and comprehension of sentences and in the mastery of language. The use of words can not be separated from the pragmatic consciousness of the communicative subject. It does not convey the meaning of the proposition, but provides information marks for the understanding of words. “Uncertain ” words are modal words, which mainly mark the speaker’s uncertainty and doubt about the content of the stated proposition. This article classifies these words in Russian and discusses their different semantic and pragmatic features.