When use the present perfect continuous?

Related questions

1. What is the structure of present continuous?
2. What is the structure of past perfect continuous tense?
3. What's the difference between past perfect and past perfect continuous?
4. What is the past perfect continuous?
5. What is the present perfect tense of teach?
6. When we use future perfect continuous tense?
7. What are present perfect tense examples?
8. What is rule of present perfect continuous tense?
9. How do you use past perfect continuous?
10. Why present perfect tense is used?

Tags

1. #durations
2. #continued
3. #started
4. #something
5. #which
6. #tuesday
7. #weeks
8. #talking
9. #continuous
10. #until
11. #minutes
12. #present
13. #examples
14. #since
15. #perfect