This article is concerned with imperfective suffixes in Russian. It argues that there are at least three imperfective suffixes, the progressive morpheme, the iterative marker and the habitual suffix. It is shown that they differ in morphosyntactic and semantic properties. As to their structural properties, the progressive suffix is the lowest marker; the iterative morpheme attaches in a higher position; and the habitual morpheme is structurally the highest element. Thus, the article argues against a unitary approach to the iterative suffix and the habitual morpheme. Semantically, the iterative suffix has a pluractional meaning, whereas the habitual suffix is a vague generic quantifier. As to their phonological properties, the three markers are homophonous; they are spelled out as an -yva- allomorph. In this respect, the suffixes differ from the morphological aspect operator encoding (im)perfectivity in the aspectual head, which is phonologically empty. Further, it is shown that there are certain prefixes in the verbal morphosyntactic structure that are placed between the progressive projection and the iterative projection.

本文讨论的是俄语中的不完美后缀。它认为至少存在三种不完美后缀：进行式语素、迭代标记和习惯性后缀。结果表明它们在形态句法和语义属性上有所不同。就其结构特性而言，渐进式后缀是最低级的标记；迭代语素附着在较高的位置；习惯语素在结构上是最高的元素。因此，本文反对对迭代后缀和习惯语素采用统一的方法。从语义上讲，迭代后缀具有复数含义，而习惯后缀是模糊的通用量词。从音韵特性来看，这三个标记是同音的；它们被拼写为-yva-异形体。在这方面，后缀与形态方面算子不同，后者在方面头中编码（不）完美性，而方面头在语音上是空的。此外，研究表明，动词形态句法结构中存在某些位于渐进投影和迭代投影之间的前缀。