The present perfect is a tense thatconnects the past with the present.
We are talking about something that:

• started in the past and is still happening

• happened in the past, but what matters is the effect now

• We don't say exactlywhen it happened

When do we use it?

1. The effect is more important than the timing of the event

   • I have lost my keys.(I lost my keys - the important thing is that I don't have them now.)

2. An action that started in the past and continues until now

   • I have lived here for 5 years. (I live tu od 5 lat – i nadal mieszkam.)

3. Life experiences (ever in my life, no date)

   • I have been to London.(I was in London - we don't say when.)

4. Something has just happened

   • I have just finished my homework. (I just finished my homework.)

Typical words in Present Perfect

• for – for a while (I have worked here for 2 years.)

• since – from a certain moment (I have known her since 2010.)

• already – already

• yet – already/yet (In pytaniach i przeczeniach)

• just – just now

• ever – ever

• never – never