Tenses Questions
The present perfect continuous tense is used to describe an action that started in the past, is still ongoing in the present, and is expected to continue into the future. It is formed by using the auxiliary verb "have" in the present tense, followed by "been" and the present participle (-ing form) of the main verb.
Example: "I have been studying for three hours."
On the other hand, the future perfect tense is used to describe an action that will be completed in the future before another action or time reference. It is formed by using the auxiliary verb "will have" followed by the past participle of the main verb.
Example: "By the time she arrives, I will have finished my work."
In summary, the present perfect continuous tense focuses on an ongoing action that started in the past and continues into the present and future, while the future perfect tense focuses on an action that will be completed before a specific future time or event.