Tenses Questions
The present perfect continuous tense is used to describe an ongoing action that started in the past and is still continuing in the present. 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 continuous tense is used to describe an ongoing action that will start in the future and continue up until a specific point in the future. It is formed by using the auxiliary verb "will have" in the future tense, followed by "been" and the present participle (-ing form) of the main verb.
Example: "By this time next year, I will have been working at this company for five years."
In summary, the main difference between the present perfect continuous and future perfect continuous tenses is the time frame in which the actions occur. The present perfect continuous focuses on an ongoing action that started in the past and continues in the present, while the future perfect continuous focuses on an ongoing action that will start in the future and continue until a specific point in the future.