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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".
The present perfect continuous (or present perfect progressive) construction combines some of this perfect progressive aspect with present tense. It is formed with the present tense of have (have or has), the past participle of be (been), and the present participle of the main verb and the ending -ing.
Most verbs have three or four inflected forms in addition to the base form: a third-person singular present tense form in -(e)s (writes, botches), a present participle and gerund form in -ing (writing), a past tense (wrote), and – though often identical to the past tense form – a past participle (written).
The perfect can also be combined with another aspect [21] that is marked in English – the progressive (or continuous) aspect. In perfect progressive (or perfect continuous) constructions, the perfect auxiliary (a form of have) is followed by the past participle been (from be, the auxiliary of the progressive aspect), which in turn is followed ...
The aorist participle represents the first event of a two-event sequence and the present participle represents an ongoing event at the time of another event. [25] Perfect verbs stood for past actions if the result is still present (e.g. 'I have found it') or for present states resulting from a past event (e.g. 'I remember').
The terms perfective and perfect should not be confused. A perfect tense (abbreviated PERF or PRF) is a grammatical form used to describe a past event with present relevance, or a present state resulting from a past situation. For example, "I have put it on the table" implies both that I put the object on the table and that it is still there ...
The present continuous tense has a very predictable conjugation pattern even for verbs that are typically irregular, such as essere ("to be") and avere ("to have"). For verbs with reduced infinitives, the gerund uses the same stem as the imperfect (which sometimes corresponds to the stem of the 1st person singular indicative present).
A number of multi-word constructions exist to express the combinations of present tense with the basic form of the present tense is called the simple present; there are also constructions known as the present progressive (or present continuous) (e.g. am writing), the present perfect (e.g. have written), and the present perfect progressive (e.g ...