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Perfective aspect. The perfective aspect (abbreviated PFV), sometimes called the aoristic aspect, [1] 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 present perfect is a grammatical combination of the present tense and perfect aspect that is used to express a past event that has present consequences. [1] The term is used particularly in the context of English grammar to refer to forms like "I have finished". The forms are present because they use the present tense of the auxiliary verb ...
Unlike the present perfect, the past perfect can readily be used with an adverb specifying a past time frame for the occurrence. For example, it is incorrect to say * I have done it last Friday (the use of last Friday , specifying the past time, would entail the use of the simple past , I did it , rather than the present perfect).
The choice of present perfect or past tense depends on the frame of reference (period or point in time) in which the event is conceived as occurring. If the frame of reference extends to the present time, the present perfect is used. For example: I have written a letter this morning. (if it is still the morning) He has produced ten plays.
v. t. e. Ancient Greek verbs have four moods (indicative, imperative, subjunctive and optative), three voices (active, middle and passive), as well as three persons (first, second and third) and three numbers (singular, dual and plural). In the indicative mood there are seven tenses: present, imperfect, future, aorist (the equivalent of past ...
The word perfect in this sense means "completed" (from Latin perfectum, which is the perfect passive participle of the verb perficere "to complete"). In traditional Latin and Ancient Greek grammar, the perfect tense is a particular, conjugated -verb form. Modern analyses view the perfect constructions of these languages as combining elements of ...
In English conditional sentences, the antecedent (protasis) is a dependent clause, most commonly introduced by the complementizer if. Other complementizers may also be used, such as whenever, unless, provided (that), and as long as. Certain condition clauses can also be formulated using inversion without any conjunction; see § Inversion in ...
Preterite. The preterite or preterit (/ ˈprɛtərɪt / PRET-ər-it; abbreviated PRET or PRT) is a grammatical tense or verb form serving to denote events that took place or were completed in the past; in some languages, such as Spanish, French, and English, it is equivalent to the simple past tense. In general, it combines the perfective ...