What is present perfect tense in German?

Related questions

1. What does present perfect mean?
2. What is the difference between present perfect and past perfect?
3. What is the structure of present perfect continuous?
4. When we use present perfect continuous tense?
5. Where do we use past simple and past perfect?
6. What is present perfect progressive tense?
7. What is present perfect and present perfect continuous?
8. What is the example of present perfect continuous tense?
9. What is the identity of present perfect tense?
10. Why is perfect tense called perfect?

Tags

1. #simple
2. #because
3. #imperfekt
4. #latter
5. #gestern
6. #present
7. #sahen
8. #haben
9. #helping
10. #expressed
11. #german
12. #tense
13. #perfekt
14. #formed
15. #participle
16. #referred
17. #gesehen
18. #compound
19. #combining
20. #perfect