When can I use present perfect?

Related questions

1. What is a progressive verb example?
2. Where do we use ago before and?
3. What does present perfect progressive mean?
4. What is the rule of present indefinite tense?
5. When Use present perfect progressive?
6. What is the past progressive?
7. What's the difference between present simple and present perfect?
8. What is past progressive tense with examples?
9. When should I use present perfect?
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Tags

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