The future perfect continuous tense is the future of the present perfect continuous tense.
Compare the following examples.
Present perfect continuous tense
- Martin has been working at the company since 2005.
- He and I have been working at the same company up to now.
- By next year, he will have been working there for eleven years.
- Jane has been studying at the college for one year.
- By the end of this year, she will have been studying there for two years.