Present Perfect

1. Use whenevwr the time in which the action takes places is not relevant

1.1. Unfinishe time

1.2. Time not important

1.3. Recent past events

2. Structure

2.1. Subject + To have + P.P

2.2. Subject + To have+not+ P.P

2.3. To have + Subjet + P.P

3. Clave words

3.1. Ever / Never

3.2. Since / For

3.3. Lust, already, yet so far