What is a perfect past tense?

Related questions

1. Had slept or have slept?
2. What is the difference between past perfect and past participle?
3. What is the difference between simple past and past progressive?
4. How do you use past tense in a sentence?
5. What are the six basic tenses?
6. Where do we use past perfect tense?
7. Why we use past perfect continuous tense?
8. What is the structure of past perfect continuous?
9. How do you change past simple to Past Perfect?
10. What is the rule of Past Perfect?

Tags

1. #before
2. #which
3. #perfected
4. #tense
5. #perfect
6. #regular
7. #action
8. #indicates
9. #either
10. #something
11. #irregular
12. #formed
13. #finished
14. #participle
15. #completed
16. #point
17. #happened