English Mastery
Module 1 · Verb Tenses

Future Perfect Continuous

Advanced35 min25 questions8 sections
Step 1

Quick Look

The Future Perfect Continuous measures how long an activity will have been running at a future point. It is the rarest tense in English — you will read it more than you will speak it — but it completes your tense map, and it impresses in writing. Form: will have been + verb-ing, same for every subject.
Sentence TypeStructure + Example
Affirmative
Subject+will have been+verb-ing
By June, I will have been running this firm for ten years.
Negative
Subject+will not (won’t) have been+verb-ing
He won’t have been working long enough to qualify.
Question
Will+subject+have been+verb-ing?
How long will you have been living here by then?

The golden rule: this tense = Future Perfect + duration of an ACTIVITY. It nearly always carries ‘for + duration’ and ‘by + future point’ in the same sentence. Missing either one? You probably want a simpler tense.

Three checks before you use it
BY +a future pointby June · by 2030by the time you retire FOR +a length of timefor ten yearsfor three hours an ACTIVITY,not a staterunning · teaching · waitingknow, own, be, love: no -ingAll three? will have been + verb-ing
Usually both clues appear together: by (a future point) and for (a length of time).
Step 2

When to Use It

for a full yearNOWDecemberPASTFUTURE
Use 1

Duration of an activity up to a future point

The signature use — by X, ...for Y.
  • By December, we will have been marketing this project for a full year.
  • Next month, she will have been teaching for thirty years.
  • By the time the possession is given, buyers will have been waiting for four years.
exhaustedtravellingNOWPASTFUTURE
Use 2

Future cause of a future state

Explaining why someone will be tired/experienced at that point.
  • He will be exhausted when he lands — he will have been travelling for twenty hours.
  • Don’t schedule anything after the expo; the team will have been standing all day.
Extra

The Complete Future Family — Side by Side

TenseExampleWhat it says
Simple FutureI will call him.Action will happen.
Future ContinuousI will be calling him at 5.Action in progress at a future moment.
Future PerfectI will have called him by 5.Action complete before a deadline.
Future Perfect ContinuousBy 5, I will have been calling clients for three hours.Duration of the activity up to that point.
Stative verbs, final reminder: know, own, be, love skip continuous everywhere — so ‘By 2030, I will have known him for 25 years’ (NOT will have been knowing).
Same call, four tenses
Simple Futurethe callNOWPASTFUTUREI will call him.Future ContinuousNOW5 P.M.PASTFUTUREI will be calling him at 5.Future PerfectNOW5 P.M.PASTFUTUREI will have called him by 5.Future Perfect Continuousfor 3 hoursNOW5 P.M.PASTFUTUREBy 5, I will have been calling clientsfor three hours.
An action, a moment in progress, a finished task, and a measured duration: one call, four ways to see it.
Step 4

Hindi Concept Note

अHindi Concept Noteहिंदी में समझिए
यह tense बताता है कि future के किसी पल तक कोई काम कितने समय से चलता आ रहा होगा।
अगले जून तक मैं दस साल से यह company चला रहा हूँगा।
By next June, I will have been running this company for ten years.
जब वह retire होगी, वह तीस साल से पढ़ा रही होगी।
When she retires, she will have been teaching for thirty years.
याद रखें: ‘तक’ (by) + ‘से’ (for/since) — दोनों एक ही वाक्य में दिखें, तो यही tense है। बोलचाल में rare है, लिखने में class दिखाता है।
Step 5

Common Mistakes Hindi Speakers Make

Wrong
Right
Why
By June, I will have been work here for ten years.
By June, I will have been working here for ten years.
The -ing is compulsory — four parts: will + have + been + verb- ing.
She will have being teaching for 30 years.
She will have been teaching for 30 years.
‘Been’, never ‘being’. Same trap as Chapter 10.
By 2030, we will have been knowing each other for 20 years.
By 2030, we will have known each other for 20 years.
Stative verb Future Perfect simple.
He will has been driving all night.
He will have been driving all night.
After will, always ‘have’ — never ‘has’.
By the time you will return, I will have been waiting for hours.
By the time you return, I will have been waiting for hours.
Time clause rule, one final time: no will after ‘by the time’.
I will have been finished the work by 6.
I will have finished the work by 6.
Completion Future Perfect (no ‘been’). ‘Been + V3’ mixes two tenses.
Step 6

Signal Words

Signals — usually BOTH appear together:
by + future point (by June, by the time you retire, by 2030)
for + duration (for ten years, for three hours)
how long will ... have been ...?
Step 7

Practice

Set A

Fill in the blanks

0 / 10
  1. 1
    By next April, we (operate) from this office for five years.
  2. 2
    When the results come, the students (wait) for two months.
  3. 3
    By 8 p.m., the cook (prepare) food for six hours straight.
  4. 4
    How long you (practise) law by the time you turn 50?
  5. 5
    By Sunday, it (rain) for a whole week.
  6. 6
    Next year, he (drive) this route for two decades.
  7. 7
    By the time the tower is ready, buyers (pay) EMIs for three years.
  8. 8
    She (not/work) here long enough for the bonus by December.
  9. 9
    By midnight, we (travel) for fourteen hours.
  10. 10
    When the loan closes, I (repay) it for seven years.
Set B

Correct the mistake

0 / 8
  1. 11
    By June, she will have been live in Pune for a decade.
  2. 12
    He will have being running the shop for 15 years by then.
  3. 13
    By 2030, I will have been owning this land for 20 years.
  4. 14
    They will has been building the mall for four years by Diwali.
  5. 15
    By the time you will finish MBA, you will have been studying for 17 years.
  6. 16
    I will have been finish the audit by Monday.
  7. 17
    How long you will have been working here by next year?
  8. 18
    When he retires, he will teach for 35 years. (duration meaning)
Set C

Translate into English

0 / 7
  1. 19
    अगले महीने तक मैं इस project पर एक साल से काम कर रहा हूँगा।
  2. 20
    जब वह graduate होगा, वह सोलह साल से पढ़ाई कर रहा होगा।
  3. 21
    दिसंबर तक हम दो साल से इस घर में रह रहे होंगे।
  4. 22
    शाम तक मज़दूर दस घंटे से काम कर रहे होंगे।
  5. 23
    जब गाड़ी पहुँचेगी, हम पाँच घंटे से इंतज़ार कर रहे होंगे।
  6. 24
    अगले साल तक वह बीस साल से यही दुकान चला रही होगी।
  7. 25
    जून तक बारिश का इंतज़ार करते हुए किसानों को तीन महीने हो चुके होंगे।
Step 8

Answer Key

Show answersHide answers
Answers · Set A
1
will have been operating
2
will have been waiting
3
will have been preparing
4
will ... have been practising
5
will have been raining
6
will have been driving
7
will have been paying
8
will not (won’t) have been working
9
will have been travelling
10
will have been repaying
Answers · Set B
11
By June, she will have been living in Pune for a decade. (-ing needed.)
12
He will have been running the shop for 15 years by then. (‘Been’, not ‘being’.)
13
By 2030, I will have owned this land for 20 years. (‘Own’ is stative.)
14
They will have been building the mall for four years by Diwali. (‘Have’, not ‘has’, after will.)
15
By the time you finish your MBA, you will have been studying for 17 years. (No will in the time clause.)
16
I will have finished the audit by Monday. (Completion Future Perfect, no ‘been’.)
17
How long will you have been working here by next year? (Will before the subject.)
18
When he retires, he will have been teaching for 35 years. (Duration up to that point.)
Answers · Set C
19
By next month, I will have been working on this project for a year.
20
When he graduates, he will have been studying for sixteen years.
21
By December, we will have been living in this house for two years.
22
By evening, the workers will have been working for ten hours.
23
When the car arrives, we will have been waiting for five hours.
24
By next year, she will have been running this same shop for twenty years.
25
By June, the farmers will have been waiting for the rain for three months.

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Next up · Chapter 15Used To, Would Always & Future in the Past

The finishing touches before the Grand Review.