Editing Imperfective aspect (section)

===Combination{{Anchor|Combination of imperfective and perfective}}===

The two aspects may be combined on the same verb in a few languages, for perfective imperfectives and imperfective perfectives. [[Georgian language|Georgian]] and [[Bulgarian language|Bulgarian]], for example, have parallel perfective-imperfective and [[aorist]]-[[imperfect]] forms, the latter restricted to the past tense. In Bulgarian, there are parallel perfective and imperfective stems; aorist and imperfect suffixes are typically added to the perfective and imperfective stems, respectively, but the opposite can occur. For example, an imperfect perfective is used in Bulgarian for a simple action that is repeated or habitual:<ref>"Bulgarian", ''Encyclopedia of Language and Linguistics'', ed. 2</ref>
{{interlinear
|vecher sedn-eshe na chardak-a
|evening sit.PFV-PST.IPFV on veranda-DEF
|In the evening, he would sit down on the veranda.
}}

Here each sitting is an unanalyzed whole, a simple event, so the perfective root of the verb {{Transliteration|bg|sedn}} 'sat' is used. However, the clause as a whole describes an ongoing event conceived of as having internal structure, so the imperfective suffix ''-eshe'' is added. Without the suffix, the clause would read simply as ''In the evening he sat on the veranda.''