What is the sentence structure of the present perfect tense?

In order to form a typical sentence in the present perfect simple, choose a subject ((the person or thing that has done the action), add an auxiliary (or helping) verb: has or have + the V3 (past participle) form of the verb and then add the rest of the sentence. Subject: have/has +Verb(V3); (Past Participle) He / She / It: has lived I / You / We / They: have met