In grammar, tense is a category that expresses time reference. Tenses are usually manifested by the use of specific forms of verbs, particularly in their conjugation patterns.
In linguistics, aspect is a grammatical category that expresses how a verbal action, event, or state, extends over time. For instance, perfective aspect is used in referring to an event conceived as bounded and unitary, without reference to any flow of time during the event. Imperfective aspect is used for situations conceived as existing continuously or habitually as time flows.
In linguistics, a participle is a nonfinite verb form that has some of the characteristics and functions of both verbs and adjectives. More narrowly, participle has been defined as "a word derived from a verb and used as an adjective, as in a laughing face".
In linguistics, a defective verb is a verb that either lacks a conjugated form or entails incomplete conjugation, and thus cannot be conjugated for certain grammatical tenses, aspects, persons, genders, or moods that the majority of verbs or a "normal" or regular verb in a particular language can be conjugated for. That is to say, a defective verb lacks forms that most verbs in a particular language have.
The past tense is a grammatical tense whose function is to place an action or situation in the past. Examples of verbs in the past tense include the English verbs sang, went and washed. Most languages have a past tense, with some having several types in order to indicate how far back the action took place. Some languages have a compound past tense which uses auxiliary verbs as well as an imperfect tense which expresses continuous or repetitive events or actions. Some languages inflect the verb, which changes the ending to indicate the past tense, while non-inflected languages may use other words meaning, for example, "yesterday" or "last week" to indicate that something took place in the past.
Russian grammar employs an Indo-European inflexional structure, with considerable adaptation.
The continuous and progressive aspects are grammatical aspects that express incomplete action or state in progress at a specific time: they are non-habitual, imperfective aspects.
The imperfect is a verb form that combines past tense and imperfective aspect. It can have meanings similar to the English "was walking" or "used to walk". It contrasts with preterite forms, which refer to a single completed event in the past.
The perfective aspect, sometimes called the aoristic aspect, is a grammatical aspect that describes an action viewed as a simple whole, i.e., a unit without interior composition. The perfective aspect is distinguished from the imperfective aspect, which presents an event as having internal structure. The term perfective should be distinguished from perfect.
The imperfective is a grammatical aspect used to describe ongoing, habitual, repeated, or similar semantic roles, whether that situation occurs in the past, present, or future. Although many languages have a general imperfective, others have distinct aspects for one or more of its various roles, such as progressive, habitual, and iterative aspects. The imperfective contrasts with the perfective aspect, which is used to describe actions viewed as a complete whole.
Lithuanian grammar retains many archaic features from Proto-Balto-Slavic that have been lost in other Balto-Slavic languages.
Proto-Indo-European verbs reflect a complex system of morphology, more complicated than the substantive, with verbs categorized according to their aspect, using multiple grammatical moods and voices, and being conjugated according to person, number and tense. In addition to finite forms thus formed, non-finite forms such as participles are also extensively used.
Ukrainian grammar is complex and characterised by a high degree of inflection; moreover, it has a relatively free word order, although the dominant arrangement is subject–verb–object (SVO). Ukrainian grammar describes its phonological, morphological, and syntactic rules. Ukrainian has seven grammatical cases and two numbers for its nominal declension and two aspects, three tenses, three moods, and two voices for its verbal conjugation. Adjectives agree in number, gender, and case with their nouns.
Bulgarian verbs are the most complicated part of Bulgarian grammar, especially when compared with other Slavic languages. Bulgarian verbs are inflected for person, number and sometimes gender. They also have lexical aspect, voice, nine tenses, three moods, four evidentials and six non-finite verbal forms. Because the subject of the verb can be inferred from the verb ending, it is often omitted. As there is no infinitive in contemporary Bulgarian, the basic form of a verb is its present simple tense first person singular form.
In linguistic morphology, a transgressive is a special form of verb. It expresses a concurrently proceeding or following action. It is considered to be a kind of infinitive, or participle. It is often used in Balto-Slavic languages. Syntactically it functions as an adverbial.
In linguistics, pluractionality, or verbal number, if not used in its aspectual sense, is a grammatical aspect that indicates that the action or participants of a verb is, or are, plural. This differs from frequentative or iterative aspects in that the latter have no implication for the number of participants of the verb.
Serbo-Croatian is a South Slavic language that, like most other Slavic languages, has an extensive system of inflection. This article describes exclusively the grammar of the Shtokavian dialect, which is a part of the South Slavic dialect continuum and the basis for the Bosnian, Croatian, Montenegrin, and Serbian standard variants of Serbo-Croatian. "An examination of all the major 'levels' of language shows that BCS is clearly a single language with a single grammatical system."
Tense–aspect–mood or tense–modality–aspect is a group of grammatical categories that are important to understanding spoken or written content, and which are marked in different ways by different languages.
Proto-Slavic is the unattested, reconstructed proto-language of all Slavic languages. It represents Slavic speech approximately from the 2nd millennium BC through the 6th century AD. As with most other proto-languages, no attested writings have been found; scholars have reconstructed the language by applying the comparative method to all the attested Slavic languages and by taking into account other Indo-European languages.
Hindustani verbs conjugate according to mood, tense, person, number, and gender. Hindustani inflection is markedly simpler in comparison to Sanskrit, from which Hindustani has inherited its verbal conjugation system. Aspect-marking participles in Hindustani mark the aspect. Gender is not distinct in the present tense of the indicative mood, but all the participle forms agree with the gender and number of the subject. Verbs agree with the gender of the subject or the object depending on whether the subject pronoun is in the dative or ergative case or the nominative case.
