What does present perfect mean?

Related questions

1. Where do we use past simple and past perfect?
2. Where do we use present perfect tense?
3. Is have been present perfect?
4. What is present perfect tense and past perfect tense?
5. Is Present Perfect Continuous the same as present perfect progressive?
6. What is the present perfect tense examples?
7. What is the rule of present perfect?
8. What's the difference between past perfect and present perfect?
9. What is present perfect tense in English?
10. What is present perfect progressive tense?

Tags

1. #tense
2. #consequences
3. #present
4. #forms
5. #aspect
6. #english
7. #refer
8. #express
9. #event
10. #context
11. #combination
12. #grammatical
13. #perfect
14. #grammar
15. #particularly