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In modern English, the auxiliary verb used to form the present perfect is always to have. A typical present perfect clause thus consists of the subject, the auxiliary have/has, and the past participle (third form) of main verb. Examples: I have done so much in my life. You have gone to school. He has already arrived in America.
A passive voice construction is a grammatical voice construction that is found in many languages. [1] In a clause with passive voice, the grammatical subject expresses the theme or patient of the main verb – that is, the person or thing that undergoes the action or has its state changed. [2]
The English passive voice typically involves forms of the verbs to be or to get followed by a passive participle as the subject complement—sometimes referred to as a passive verb. [1] English allows a number of additional passive constructions that are not possible in many other languages with analogous passive formations to the above.
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.
– he is an auxiliary accompanying the infinitive coger, used here to form a verb phrase, the perfect present in Spanish. [3] (I) have grabbed your pencil = 'I have taken your pencil.' d. Das wurde mehrmals gesagt. – werden, from which wurde is inflected, become is an auxiliary used to build the passive voice in German. [4]
The usual passive voice is the se pasiva, in which the verb is conjugated in the active voice, but preceded by the se particle: La puerta se abre. La puerta se cierra. Estar is used to form what might be termed a static passive voice (not regarded as a passive voice in traditional Spanish grammar; it describes a state that is the result of an ...
There is a perfect infinitive (to) have written and a perfect progressive infinitive (to) have been writing, and corresponding present participle/gerund forms having written and having been writing. A perfect subjunctive (have written) is also sometimes used. Future and conditional perfect forms are given below.
In particular the supposed present perfect progressive example I have been overcome is the same as the present perfect passive. If this were correct, the same words would have active voice in one case and passive in the other which seems absurd. I have been overcome is surely only passive voice. 'To be overcome' is always passive.