What is the rule of present perfect?

Related questions

1. Is Present Perfect Continuous the same as present perfect progressive?
2. What is the identity of present perfect tense?
3. Where do we use past simple and past perfect?
4. When use the present perfect tense?
5. What is present perfect tense in English?
6. Is have been present perfect?
7. When we use present perfect continuous tense?
8. Where do we use present perfect tense?
9. What is present perfect past perfect and future perfect?
10. When I use present perfect and present perfect continuous?

Tags

1. #typical
2. #action
3. #subject
4. #sentence
5. #perfect
6. #participle
7. #person
8. #present
9. #helping
10. #auxiliary
11. #choose
12. #thing
13. #simple
14. #order