The future perfect continuous ( also known as future perfect progressive ) tense describes an action that will be in progress over a period of time that will end in the future. It emphasizes the duration of an action leading up to a specific point in the future. ... [مشاهده متن کامل]
Form: The future perfect continuous is formed using: will have been the present participle ( verb - ing ) . Example: "By the time you arrive, I will have been waiting for two hours. " Usage: To describe an ongoing action continuing until a specific time in the future: "By the end of the year, I will have been working here for five years. " To emphasize the duration of an action: "He will have been traveling for three days by the time he reaches his destination. " For actions that are repeated over a period of time: "By the end of this year, she will have been studying French for ten years. " With nonaction verbs, which generally do not use the continuous form, we use the future perfect simple instead .