B1_Present Perfect Simple & Present Perfect Cont ...

actions that began in the past and continue now, or have happened repeatedly until now.

have / has + verb past participle

actions that happened in the past but we don't know or say when

actions that have just finished

actions that happened in the past but have results that affect the present

have/ has + been + verb -ing form

to say how long actions have continued for

experiences and achievements

actions that continued for a period of time and have finished but that have results that affect the present