Future Perfect Continuous

C1 · AdvancedFuture Forms

The future perfect continuous lets you look forward to a future moment and describe how long something will have been going on by then.

What you'll learn

  • Formed with will have been + verb-ing (I will have been working, she will have been studying)
  • Emphasizes duration up to a specific future point, usually with for
  • Contrasts with the future perfect, which emphasizes completion, not duration
  • Common signal phrases: by, by the time + a duration with for

How long, by a future point

The future perfect continuous describes how long an action will have been going on by a specific moment in the future — the focus is on duration, not on finishing.

"By June, I will have been working here for five years."
"By 10pm, she will have been studying for six hours."

Formation: will have been + verb-ing

The future perfect continuous is built with will have been followed by the -ing form of the main verb. The negative adds not: won't have been. Questions invert will and the subject.

"They won't have been living here long by then."
"Will you have been waiting long by the time I arrive?"

Future perfect continuous vs. future perfect

The future perfect (will have + past participle) emphasizes that something will be done — finished — by a future point. The future perfect continuous (will have been + -ing) emphasizes how long something will have been happening, without necessarily being finished.

"By the time he retires, he will have been teaching for 30 years. (duration)"
"By the time he retires, he will have finished the project. (completion)"

Asking about duration

How long is a common question word with this tense, asking about the length of an ongoing situation measured up to a future point.

"How long will you have been living here by December?"
"Will they have been traveling for 24 hours by then?"

Real English

"By next year, she will have been running the company for a decade."
"By the time you arrive, we will have been waiting for two hours."
"By the end of the month, he will have been living abroad for a year."
"By next month, we will have been dating for a year."

Watch out

✗By June, I will have working here for five years.
✓By June, I will have been working here for five years.

Don't drop been — the future perfect continuous needs will have been, not just will have, before the -ing form.

✗By next month, we will have been date for a year.
✓By next month, we will have been dating for a year.

After will have been, use the -ing form of the verb, not the base form.

✗By the time he retires, he will have taught for 30 years. (meaning: still going, ongoing count)
✓By the time he retires, he will have been teaching for 30 years.

When emphasizing an ongoing duration rather than a completed event, use the continuous form: will have been + -ing.

Real life — Marking a milestone

"How long have you two been together now?"

"By next month, we will have been dating for a year!"

"That's a big milestone. Any plans?"

"We're thinking of a trip to celebrate."

Practice

Exercise 1 · Choose the correct sentence

Choose the correct sentence — duration up to a future point.

Exercise 2 · Choose the correct sentence

Choose the correct sentence.

Exercise 3 · Choose the correct negative

Choose the correct negative.

Exercise 4 · Choose the correct question

Choose the correct question.

Exercise 5 · Choose the correct sentence

Choose the correct sentence.

Exercise 6 · Choose the correct answer

Which best describes the future perfect continuous?

Exercise 7 · Choose the correct sentence

Choose the correct sentence.

Exercise 8 · Choose the correct question

Choose the correct question.

Exercise 9 · Complete the sentence

Complete: 'By 2027, they ___ (live) in Kyiv for a decade.' (future perfect continuous)

Exercise 10 · Complete the sentence

Complete: 'By midnight, we ___ (not/drive) for 12 hours straight.' (negative)

Exercise 11 · Sort into groups

will have been working
will have finished
will have been studying
will have arrived
will have been waiting
will have left

0 / 6 sorted

Quick challenge

Five quick questions to check what stuck.

Question 1 / 5

Score: 0/0

Choose the correct sentence.

You learned

  • Future perfect continuous is formed with will have been + verb-ing.
  • It emphasizes the duration of an action up to a specific future point.
  • It contrasts with the future perfect, which emphasizes completion.
  • How long is a common question word used with this tense.

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