Practice using the future perfect continuous to emphasize duration up to a future point.
Not sure which level to practice?Take the free level testThe future perfect continuous is formed with will + have + been + the -ing form of the verb.
For example: “I will have been working.” Negatives use will not (won't) have been + -ing, and questions invert: “Will you have been working?” It emphasizes the duration of an action up to a specific point in the future.
Emphasizing how long an action will have lasted by a future point
By June, I will have been studying English for three years.
Stressing the ongoing nature of an activity continuing up to a future moment
By midnight, they will have been driving for ten hours.
Explaining a future cause and its visible result
She'll be tired because she will have been working all night.
Highlighting duration before another future event
By the time you graduate, you will have been living here for four years.
Practice
Which sentence is correct?
We put the turkey in at noon. When we finally carve it at four, itroasting for four hours.
The lawn will be soaked tonight because the sprinkler all afternoon.
By the end of the year, my parents that little bakery for two decades.
By the time they get home, the kids in the mud for hours, so they'll be filthy.
By the time the rescue team arrives, the hikers for over twelve hours.
The mail truck came by at two thirty, and the dog has been barking ever since. If nobody lets him in by three, hebarking for half an hour.
By the time we reach the summit, we for nearly eight hours.
We set off in the car at 6 a.m., and we still have a long way to go. By midnight, wefor eighteen hours.
The baby has been crying since two in the morning. If she settles down before three, shecrying for a full hour.