The present perfect simple and continuous

Life experiences: Have you ever eaten Sushi before?

Accomplishments: Man has walked on the moon.

Finished actions with present results: She has lost her wallet (she can't find it)

Recently completed actions: I have just finished my project

Unfinished action (duration from past until now): I have lived in Paris for five years.

Multiple actions over time: I have seen Hakim several times.

How long? To emphasize duration. He has been living in Paris for 3 years.

To focus on the activity, not the result. You look tired. What have you been doing.

To describe a temporary state or activity. I have been going to the gym a lot recently.

Present perfect: You have just come back from your vacation.

Past simple: It's December already.