The perfect tense it’s a verbal tense of our language that allows to allude to an action carried out in the last. There are two types of past perfect: simple past perfect and the past perfect compound.
The simple past perfect is used when the act in question is located in a moment prior to expression. In these cases, the activity is considered already finished and has no necessary link to it Present.
For instance: “The day before yesterday I had lunch with Rodrigo in a restaurant in the center”. As can be seen, the speaker points to a action that took place in the past“the day before yesterday”), resorting to the simple past perfect for the conjugation of the verb (“I lunched”). That lunch does not continue, but ended.
Others examples simple past perfect: “The policeman fired without hesitation”, “The old man wrote his will in a few minutes and gave it to the lawyer”, “I already got out of the shower”.
The past perfect compound, meanwhile, places the action in an instant prior to the present, but in a period that not finished yet. The exercise, in this framework, maintains a relationship with the present time period.
With the past perfect compound, in short, it indicates that there is still a influence of the action taken. The construction of these expressions is done with the auxiliary verb to have more him participle of the verb.
“I have screamed a lot in the game” is an example of a past perfect compound. The subject comments that some time ago he forced his voice (“I have screamed”), which could be suggesting the possible cause of dysphonia.