present perfect - definição. O que é present perfect. Significado, conceito
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O que (quem) é present perfect - definição

GRAMMATICAL COMBINATION OF THE PRESENT TENSE AND THE PERFECT ASPECT
Present Perfect; Simple present perfect; Present perfect tense

present perfect         
In grammar, the present perfect tenses of a verb are the ones used to talk about things which happened before the time you are speaking or writing but are relevant to the present situation, or things that began in the past and are still happening. The simple present perfect tense uses 'have' or 'has' and the past participle of the verb, as in 'They have decided what to do'.
ADJ: ADJ n
historic present         
LINGUISTIC DEVICE
Historic present; Historical Present Tense; Narrative present; Dramatic present; Historical present tense; Literary present
¦ noun Grammar the present tense used instead of the past in vivid narrative.
Historical present         
LINGUISTIC DEVICE
Historic present; Historical Present Tense; Narrative present; Dramatic present; Historical present tense; Literary present
In linguistics and rhetoric, the historical present or historic present, also called dramatic present or narrative present, is the employment of the present tense when narrating past events. It is widely used in writing about history in Latin (where it is sometimes referred to by its Latin name, praesens historicum) and some modern European languages.

Wikipédia

Present perfect

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. 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 have, and perfect because they use that auxiliary in combination with the past participle of the main verb. (Other perfect constructions also exist, such as the past perfect: "I had eaten.")

Analogous forms are found in some other languages, and they may also be described as present perfect; they often have other names such as the German Perfekt, the French passé composé and the Italian passato prossimo. They may also have different ranges of usage: in all three of the languages just mentioned, the forms in question serve as a general past tense, at least for completed actions.

In English, completed actions in many contexts are referred to using the simple past verb form rather than the present perfect. English also has a present perfect continuous (or present perfect progressive) form, which combines present tense with both perfect aspect and continuous (progressive) aspect: "I have been eating". The action is not necessarily complete; and the same is true of certain uses of the basic present perfect when the verb expresses a state or a habitual action: "I have lived here for five years."

Exemplos do corpo de texto para present perfect
1. All the elements of a successful day were present perfect weather and the worlds fastest cars and finest drivers, and the only fault was the lack of any serious opposition for the Mercedes–Benz team, which finished in first, second, third and fourth places.