What are perfect continuous tenses?

Related questions

1. What is Active Voice example?
2. What are some examples of transitive verbs?
3. Is the verb to be transitive or intransitive?
4. Why we use future continuous tense?
5. What is the rule for future continuous tense?
6. Will the future passive form?
7. Why there is no passive voice of future continuous?
8. What effect does Active Voice have?
9. What is the use of active voice and passive voice?
10. Do it change your voice?

Tags

1. #construction
2. #continuing
3. #something
4. #participle
5. #using
6. #present
7. #known
8. #perfect
9. #continuous
10. #started
11. #progressive
12. #formed
13. #tense
14. #shows