Present Perfect

Present Perfect
The Present Perfect is used for something that started and has been completed at some point in the past or continues in the present. It doesn’t give an idea about the exact time of its occurrence.
It is formed using the present tense of the verb “have” and the past participle of a verb in the 3rd form.
In the negative form, use the present tense of the verb “have” + not + the past participle of a verb in the 3rd form
In the interrogative form, use first the present tense of the verb “have” + subject + the past participle of a verb in the 3rd form
It is frequently used with the words ‘already’ in the positive form and ‘yet’ in the negative form.