Why do we use present perfect tense?

Related questions

1. What is present perfect and simple past?
2. What is the difference between simple present and present perfect?
3. Why Is Present Perfect called that?
4. What is the difference between the present perfect and past perfect?
5. How do we use past simple?
6. How do you change Simple Past to Present Perfect?
7. What are simple tenses?
8. What is the form of present perfect simple?
9. What are simple present tense?
10. Why do we use present perfect?

Tags

1. #relationship
2. #finished
3. #makes
4. #present
5. #describe
6. #participle
7. #tense
8. #homework
9. #perfect
10. #something
11. #happened
12. #exact
13. #important