Why do we use present perfect?

Related questions

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

Tags

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