Knowledge base · Part XIV — Tense, Aspect, Mood, and Modality · this topic as a network
108. Tense, Aspect, Mood, and Modality: Overview
How do tense, aspect, mood, and modality combine in the verbal system, and which categories are expressed optionally?
Tenselessness and the periphrastic architecture
What grammatical categories does the finite verb express, and are they obligatory or optional?
Grammatical tense does not exist as a grammatical category in Ainu, which lacks morphological markers for past, present, or future tense. (Nakagawa 2024: 434, Refsing 1986: 191, Shibatani 1990: 18, Bugaeva 2008) Ainu possesses auxiliary verb collocations formed by attaching a conjunctive particle to a verb followed by an auxiliary verb such as 'an or kara to express aspectual meanings like continuation or completion. (Murasaki 2025: 33) Auxiliary verbs and auxiliary verb collocations integrate with a verb without changing its function as a verb clause, functioning to add subjective meanings such as aspect and mood (potentiality, conjecture, desire, assertion, degree, completion). (Murasaki 2025: 36) Aspect and evidentiality are not obligatory grammatical categories in Ainu. (Takahashi 2022: 18.1)
Time reference without tense
What resources, apart from tense, does the language use to locate events in time?
The plain verbal form of an action or process verb is typically translated as a simple past tense expression. (Shibatani 1990: 18)
Lexical aspect and the existential-aspect core
How does lexical aspect condition the aspectual frames a verb enters, and what Aktionsart suffixes exist?
Ainu possesses well-developed aspectual expressions, marking how an action unfolds in time rather than its relative temporal location with respect to the speech time. (Nakagawa 2024: 437) The imperfective aspect describes a process coextensive with or exceeding the speaker's temporal frame, continuing before and beyond that temporal area. (Refsing 1986: 192) The uncompleted aspect indicates simultaneity between a process and the temporal frame maintained by the speaker. (Refsing 1986: 195) In Ainu, aspect is basically expressed by complex predicates made up of combinations of the conjunctive particles kor and wa and the existential verb an/oka(y). (Takahashi 2022: 18.2) In most dialects of Ainu, there is a contrast between progressive aspect and resultative aspect. (Takahashi 2022: 18.2) In Ainu, the opposition between perfective and imperfective aspects is unclear. (Yoshikawa 2022: 19.5)
Completion, anteriority, and the admirative
How is completion or anteriority expressed, and what functions does the auxiliary derived from 'sit' carry?
The auxiliary aan (plural rokoka) indicates that at a certain point, the speaker realized what had occurred prior to that point ('it turned out that...'). (Nakagawa 2024: 307) The auxiliary aan varies across dialects, appearing as anan in Chitose, awan in Horobetsu and Tokachi, and hawan in Tokachi; the plural rokoka appears as rokokay in Horobetsu and Chitose, as well as before pe in Saru. (Nakagawa 2024: 307) In dialects such as Chitose, anan and its plural form rokoka(y) can be combined together as rokoka anan without any difference in meaning from anan alone. (Nakagawa 2024: 307) The auxiliary nisa indicates in Tamura (1960) that an action was completed in the immediate past, but this morpheme or any corresponding form does not appear to exist in the Shizunai dialect. (Refsing 1986: 192)
The modal field
How are epistemic, deontic, and ability modal meanings distributed across different clause positions?
The auxiliary construction ~ hV ne'an expresses that something is properly or securely done ('is properly doing'). (Murasaki 2025: 94) The auxiliary construction ka 'esinka expresses difficulty in doing something ('hard to ~'). (Murasaki 2025: 94)
Directive and hortative mood
How are commands and requests formed for singular versus plural or polite addressees?
Boundaries with evidentiality, negation, and clause linkage
How do aspect forms interact with evidentiality, negation, and clause linkage?
The grammatical dependency relation in Ainu negative subordinate clauses can be analyzed as aspect being dependent on negation. (proposed in Takahashi 2022: 18.5)