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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".
It is formed with the present tense of the auxiliary have (namely have or has) and the past participle of the main verb. 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 ...
(While many elementary discussions of English grammar classify the present perfect as a past tense, it relates the action to the present time. One cannot say of someone now deceased that they "have eaten" or "have been eating". The present auxiliary implies that they are in some way present (alive), even when the action denoted is completed ...
The motivation for nominal grouping is that in many languages nouns and adjectives share a number of morphological and syntactic properties. The systems used in such languages to show agreement can be classified broadly as gender systems, noun class systems or case marking , classifier systems, and mixed systems. [ 1 ]
Mortlockese uses tense markers such as mii and to denote the present tense state of a subject, aa to denote a present tense state that an object has changed to from a different, past state, kɞ to describe something that has already been completed, pɞ and lɛ to denote future tense, pʷapʷ to denote a possible action or state in future tense ...
The basic (present) perfect form, with the auxiliary in the present tense, may specifically carry the meaning of perfect aspect, as in English; however in some languages it is used more generally as a past tense (or preterite), as in French and German. The use of auxiliaries and meaning of the constructions in various languages are described below.
In Ancient Greek, the perfect tense (Ancient Greek: χρόνος παρακείμενος, romanized: khrónos parakeímenos) [9] is a set of forms that express both present tense and perfect aspect (finite forms), or simply perfect aspect (non-finite forms). However, not all languages conflate tense, aspect and mood.
As stated above, verbless sentences occur only in the present tense thus, a formal nominal sentence in Arabic can never express something in the past tense. That is, the past feature has to always be indicated morphologically to convey accurate information of (+past), unlike the present which can be referred to as tenseless. [ 10 ]