Grammar Rule in 30 Seconds
Use this tense to emphasize how long an action will have been happening by a specific point in the future.
- Use 'will have been' + '-ing' for all subjects. Example: 'I will have been waiting.'
- Always include a time reference like 'by next week' or 'for three hours'.
- Avoid using stative verbs like 'know' or 'believe' in this continuous form.
Overview
will (미래), have (완료), been (상태), -ing (진행)이라는 네 가지 요소를 결합하여 아주 구체적인 시간의 그림을 그려냅니다.- 1
will(미래의 닻): 문장의 시점이 현재가 아닌 미래임을 나타냅니다. 미래의 특정 시점에 ‘깃발’을 꽂는 역할을 합니다. - 2
have(완료의 다리): 완료상은 서로 다른 두 시점을 연결합니다. 여기서는 ‘미래의 기준점’과 ‘그 이전의 어느 시점’을 연결하여, 그 사이의 기간을 아우릅니다. - 3
been(진행의 토대):be동사의 과거분사형인been은 뒤에 오는-ing와 결합하여 ‘지속되고 있는 상태’를 형성합니다. - 4
-ing(동작의 생동감): 현재분사 형태는 동작이 멈추지 않고 계속되고 있음을 생생하게 보여줍니다.
will have been studying이라고 하여, 미래(will)의 어느 시점에 봤을 때 그 이전부터 공부가 완료(have)된 상태로 계속 진행(been -ing) 중임을 명시합니다.will have been -ing for (duration) |will have been -ing (emphasizing continuity) |will have been이라는 세 단어의 덩어리를 절대 깨뜨리지 않는 것입니다.will + have + been + 동사원형-ingBy next month, I will have been living in Seoul for ten years.(다음 달이면 서울에 산 지 10년이 됩니다.)At 5 PM, she will have been working for eight hours straight.(오후 5시가 되면 그녀는 8시간 연속으로 일하고 있는 셈이 될 것입니다.)
will을 줄여 씁니다.I'll have been.../You'll have been.../They'll have been...We'll have been studying at this academy for six months by graduation.
will not (won't) + have + been + 동사원형-ingnot은 첫 번째 조동사인 will 바로 뒤에 위치합니다.He won't have been waiting long when the bus finally arrives.(버스가 마침내 도착할 때, 그가 오래 기다린 상황은 아닐 것입니다.)By the time the project ends, we will not have been using that software for very long.
Will + 주어 + have + been + 동사원형-ing?Will you have been traveling for more than 24 hours by the time you reach New York?(뉴욕에 도착할 때쯤이면 24시간 이상 여행하고 있는 중이겠네요?)How long will they have been practicing before the concert starts?(콘서트가 시작되기 전까지 그들은 얼마나 오랫동안 연습하게 되는 건가요?)
In December, my parents will have been married for 30 years.(이 문장은 상태이므로 미래 완료를 쓰지만, 동작이라면) ->By next year, they will have been living together for three decades.When I graduate, I will have been studying English for 12 years.(졸업할 때면, 나는 12년 동안 영어를 공부해 온 것이 된다. - 나의 꾸준함을 강조)
Tae-ho will be exhausted when he gets home because he will have been exercising at the gym all afternoon.(태호가 집에 오면 기진맥진할 거야. 오후 내내 체육관에서 운동을 하고 있었을 테니까.)The ground will be wet because it will have been raining for hours.(땅이 젖어 있을 거야. 몇 시간 동안 비가 내리고 있었을 테니까.)
Don't call her at midnight. She'll have been sleeping for a while by then.(자정에 전화하지 마. 그때쯤이면 그녀는 한참 자고 있는 중일 거야.)By the time the delivery app notification pops up, I will have been starving for an hour.(배달 앱 알림이 뜰 때쯤이면, 난 이미 한 시간 동안 굶주려 있는 상태일 거야.)
will have done)과 완료 진행형(will have been doing)의 혼동- 잘못된 예:
By tomorrow, I will have been finishing the report.(X) - 옳은 예:
By tomorrow, I will have finished the report.(O) - 설명: 보고서를 '끝내는 것'은 일시적인 완료 사건이지, 지속되는 과정이 아닙니다. 반면,
I will have been writing the report for five hours는 5시간이라는 '지속 기간'을 강조하므로 적절합니다.
-ing를 붙이는 실수- 잘못된 예:
By next month, I will have been knowing him for a year.(X) - 옳은 예:
By next month, I will have known him for a year.(O) - 설명: '알고 있다'는 상태이지 동작이 아니므로 진행형(
-ing)을 쓸 수 없습니다.
has 사용 오류been을 빼먹거나, 주어가 3인칭 단수(He/She/It)라고 해서 will has로 쓰는 실수를 자주 합니다.- 잘못된 예:
She will has been working...(X) - 옳은 예:
She will have been working...(O) - 설명: 조동사
will뒤에는 반드시 동사원형이 와야 하므로, 주어와 상관없이 항상have를 씁니다.
for 2 hours만 있고 by the time... 같은 기준점이 없으면 문장이 공중에 붕 뜨게 됩니다.- 모호한 예:
I will have been studying.(언제까지?) - 명확한 예:
By the time the cafe closes, I will have been studying here for six hours.
will be -ing | 미래의 특정 순간에 하고 있을 동작 자체 | At 9 PM, I will be watching Netflix. (9시에 나는 넷플릭스를 보는 중일 거야.) |will have p.p. | 미래의 특정 시점 전에 완료될 결과/상태 | By 9 PM, I will have watched the movie. (9시가 되면 영화 시청을 끝냈을 거야.) |will have been -ing | 미래의 특정 시점까지 이어져 온 동작의 기간 | By 9 PM, I will have been watching Netflix for three hours. (9시가 되면 3시간째 보고 있는 셈이 돼.) |will be watching은 단순히 그 시간에 무엇을 하는지(What)를 보여줍니다.will have watched는 그때 일이 끝났는지(Done)를 보여줍니다.will have been watching은 그때까지 얼마나 힘들게 혹은 즐겁게 그 일을 해왔는지(How long) 그 노력과 시간의 양을 보여줍니다.
will have been -ing를 정말 많이 쓰나요? 너무 복잡해 보여요.for나 since 같은 시간 표현이 꼭 들어가야 하나요?for two hours, for a long time, since morning 같은 표현이 동반되어야 문맥이 자연스럽습니다.will 대신 be going to를 써서 am going to have been -ing라고 할 수도 있나요?will have been -ing를 사용합니다. 간결함이 생명인 언어의 특성상 will을 선택하는 것이 훨씬 자연스럽습니다.By this time next year, I will have been studying English for [숫자] years!처럼요. 쉽죠?
Conjugation of 'To Work' in Future Perfect Continuous
| Subject | Auxiliary | Perfect/Continuous | Main Verb (-ing) |
|---|---|---|---|
|
I
|
will
|
have been
|
working
|
|
You
|
will
|
have been
|
working
|
|
He/She/It
|
will
|
have been
|
working
|
|
We
|
will
|
have been
|
working
|
|
They
|
will
|
have been
|
working
|
Contractions and Short Forms
| Full Form | Contraction | Negative Contraction |
|---|---|---|
|
I will have been
|
I'll have been
|
I won't have been
|
|
You will have been
|
You'll have been
|
You won't have been
|
|
He will have been
|
He'll have been
|
He won't have been
|
|
We will have been
|
We'll have been
|
We won't have been
|
|
They will have been
|
They'll have been
|
They won't have been
|
Meanings
The Future Perfect Continuous describes an ongoing action that will continue up until a specific point in the future, focusing specifically on the duration or the process of that action.
Duration up to a future point
To show how long an activity has been in progress when a future deadline is reached.
“By the time the sun sets, we will have been hiking for eight hours straight.”
“In December, she will have been working at this firm for two decades.”
Cause of a future result
To explain the reason for a future state or feeling based on a continuous action.
“I'll be exhausted when I see you because I will have been traveling for 24 hours.”
“Their eyes will be tired because they will have been staring at screens all day.”
Projected certainty of duration
Expressing a strong conviction about the length of an ongoing future state.
“By then, they will have been dating long enough to get married.”
“I will have been practicing this piece so much that I'll know it by heart.”
Reference Table
| 종류 | 형태 | 초점 | 예시 |
|---|---|---|---|
|
긍정
|
will have been + 동사-ing
|
기간
|
I will have been working.
|
|
부정
|
will NOT have been + 동사-ing
|
기간
|
She will not have been sleeping.
|
|
의문
|
Will + 주어 + have been + 동사-ing?
|
기간
|
Will they have been waiting long?
|
|
짧은 대답 (긍정)
|
Yes, 주어 will.
|
긍정
|
Yes, I will.
|
|
짧은 대답 (부정)
|
No, 주어 will not.
|
부정
|
No, we will not.
|
|
축약형
|
주어 + 'll have been + 동사-ing
|
비격식
|
He'll have been cooking.
|
격식 수준 스펙트럼
By the conclusion of this fiscal year, Mr. Smith will have been serving as Director for a decade. (Professional milestone)
By the end of the year, he will have been working as the Director for ten years. (Professional milestone)
He'll have been the boss for ten years by Christmas. (Professional milestone)
He's gonna have been running the show for ten years straight soon. (Professional milestone)
미래완료진행 시제: 시간 여행 시제
형태
- 주어 + 누구/무엇
- will 미래
- have been 완료 진행
- 동사-ing 행동
핵심 아이디어
- 기간 얼마나 오래
- 진행 중인 행동 아직 끝나지 않음
- 미래 시점 특정 시간까지
신호 단어
- By then 미래 마감일
- For (기간) 시간의 범위
- Since (시점) 시작점
미래 시제 비교: 한눈에 보기
미래 시제 선택하기
행동이 미래에 일어나나요?
미래의 특정 시점까지 행동이 완료될까요?
미래 시점까지의 '기간'을 강조하나요?
미래의 특정 시점에 행동이 진행 중일 것이지만, 기간 강조가 주 목적은 아닌가요?
미래완료진행 시제: 맥락 속에서
학술적
- • 연구 보고서
- • 논문 마감일
- • 학습 계획
- • 프로젝트 마일스톤
직업적
- • 프로젝트 관리
- • 성과 검토
- • 고객 업데이트
- • 교육 일정
사교적
- • 여행 계획
- • 이벤트 준비
- • 장기 우정
- • 개인적인 목표
디지털
- • 스트리밍 몰아보기
- • 게임 세션
- • 앱 개발 주기
- • 콘텐츠 제작 시리즈
수준별 예문
I will have been here for one hour.
I will have been here for one hour.
She will have been sleeping for a long time.
She will have been sleeping for a long time.
We will have been playing for ten minutes.
We will have been playing for ten minutes.
Will you have been waiting long?
Will you have been waiting long?
By 6 PM, I will have been working for eight hours.
By 6 PM, I will have been working for eight hours.
They will have been living here for a month soon.
They will have been living here for a month soon.
He won't have been studying for very long.
He won't have been studying for very long.
How long will she have been cooking by then?
How long will she have been cooking by then?
By the time the train arrives, we will have been standing here for forty minutes.
By the time the train arrives, we will have been standing here for forty minutes.
Next year, they will have been traveling around the world for six months.
Next year, they will have been traveling around the world for six months.
I will have been practicing the piano all day, so I'll be tired.
I will have been practicing the piano all day, so I'll be tired.
Will you have been staying at the hotel for a week by Friday?
Will you have been staying at the hotel for a week by Friday?
By the end of this semester, I will have been researching this topic for over a year.
By the end of this semester, I will have been researching this topic for over a year.
She will have been competing professionally for a decade by the time she retires.
She will have been competing professionally for a decade by the time she retires.
They won't have been dating long enough to make such a big decision.
They won't have been dating long enough to make such a big decision.
By tomorrow morning, it will have been snowing for twenty-four hours straight.
By tomorrow morning, it will have been snowing for twenty-four hours straight.
By the time the legislation passes, the committee will have been debating its merits for years.
By the time the legislation passes, the committee will have been debating its merits for years.
I'll be quite relieved when the project ends, as I will have been working under immense pressure.
I'll be quite relieved when the project ends, as I will have been working under immense pressure.
Will the scientists have been monitoring the volcano long enough to predict the eruption?
Will the scientists have been monitoring the volcano long enough to predict the eruption?
By the gala, the dancers will have been rehearsing this specific choreography for months.
By the gala, the dancers will have been rehearsing this specific choreography for months.
Upon his inauguration, he will have been campaigning tirelessly for the better part of two years.
Upon his inauguration, he will have been campaigning tirelessly for the better part of two years.
The ecosystem will have been recovering from the spill for decades before it reaches its former state.
The ecosystem will have been recovering from the spill for decades before it reaches its former state.
By the time the sun burns out, it will have been fusing hydrogen for billions of years.
By the time the sun burns out, it will have been fusing hydrogen for billions of years.
One wonders if they will have been cohabiting in such disharmony for long before they part ways.
One wonders if they will have been cohabiting in such disharmony for long before they part ways.
혼동하기 쉬운
Both tenses use 'will' and '-ing'. Learners often use Future Continuous when they should be measuring duration.
Learners struggle to choose between the result (Simple) and the process (Continuous).
The structures are similar (have been -ing).
자주 하는 실수
I will have working.
I will have been working.
I will been working.
I will have been working.
I will have been work.
I will have been working.
By tomorrow I will have been here.
By tomorrow I will have been staying here.
I will have been knowing him.
I will have known him.
Will you have been work?
Will you have been working?
I won't have been wait long.
I won't have been waiting long.
By the time he comes, I will be working for 2 hours.
By the time he comes, I will have been working for 2 hours.
I will have been being tired.
I will have been tired.
How long will you have been having this car?
How long will you have had this car?
By next year, the house will have been being built.
By next year, the house will have been under construction.
문장 패턴
By the time ___, I will have been ___ for ___.
In [Month/Year], she will have been ___ at ___ for ___.
Real World Usage
By next month, I will have been working in this industry for five years.
On Saturday, we will have been dating for exactly two years!
By the time we launch, the developers will have been coding for six months.
By the time we reach Tokyo, we will have been traveling for 15 hours.
The subjects will have been receiving the treatment for three weeks before the first evaluation.
By tomorrow, it will have been raining for three days straight.
시간 관련 표현에 주목하세요
by the time, for (기간), since (시점) 같은 표현이 보이면 미래완료진행 시제일 가능성이 높아요. 미래의 특정 시점을 알려주거든요. They will have been traveling for six months by the time they reach Japan.
상태 동사는 피해주세요
I will have been knowing him for ten years는 어색해요.
완료보다는 '기간'에 집중하세요
will have done)를 사용하세요. She will have been writing the novel for five years by the end of this year.
고급스러운 영어 표현
Smart Tips
Use the Future Perfect Continuous to describe your upcoming milestones.
Use this tense to emphasize the exhaustion of travel.
Immediately check if you need 'will have been -ing'.
Switch to Future Perfect Simple immediately.
발음
The 'will have' contraction
In natural speech, 'will have' is almost always contracted to 'll have' or even 'll've'.
The weak 'been'
The word 'been' is usually unstressed and pronounced with a short /ɪ/ sound, like 'bin'.
Emphasis on duration
I will have been waiting for FIVE hours!
The speaker is emphasizing the length of time to show frustration or effort.
암기하기
기억법
W.H.B.I. - 'Will Have Been -Ing'. Think: 'Will He Be Interesting?' to remember the order of the auxiliary verbs.
시각적 연상
Imagine a long, glowing bridge stretching from today into next year. At the end of the bridge is a clock. The bridge represents the 'duration' (have been -ing) and the clock is the 'future point' (will).
Rhyme
By the time the clock strikes ten, I will have been working since who knows when!
Story
A marathon runner is approaching the finish line. As they run, they think: 'By the time I cross that line, I will have been running for four hours.' The line is the future point, and the sweat is the continuous effort.
Word Web
챌린지
Write down one thing you will have been doing for a long time by the end of this year. Use the full structure: 'By December 31st, I will have been...'
문화 노트
British speakers may use 'shall' instead of 'will' in very formal contexts, though 'shall have been' is becoming extremely rare.
Americans often simplify this tense in casual conversation, opting for the Future Continuous if the duration is already clear from the context.
This tense is frequently used in performance reviews and project planning to emphasize commitment and long-term involvement.
The English future perfect continuous developed as the language moved from a synthetic structure (using endings) to an analytic structure (using auxiliary verbs).
대화 시작하기
By the end of this year, how long will you have been studying English?
If you stay in your current job for another five years, how long will you have been working there in total?
By the time you retire, what is one hobby you will have been doing for most of your life?
Imagine you are on a 20-hour flight. By the 15th hour, how will you be feeling and what will you have been doing?
일기 주제
자주 하는 실수
Test Yourself
By next year, I ___ (learn) English for five years.
Find and fix the mistake:
By the time he retires, he will been teaching for thirty years.
Choose the correct sentence:
Translate into English: '다음 주 월요일이면, 이 책을 일주일 동안 읽고 있을 거예요.'
Answer starts with: ["B...
Score: /4
연습 문제
8 exercisesBy the time the guest arrives, I ___ (cook) for three hours.
Find and fix the mistake:
By next week, she will has been living here for a month.
I'm so tired! By the time I get home, I ___ for ten hours.
I am studying English. (By 2026 / for five years)
By next year, I will have been knowing her for a decade.
A: Will you be tired when you arrive? B: Yes, I ___ for two days.
1. By midnight... / 2. By next year... / 3. By the time he arrives...
Score: /8
Practice Bank
12 exercisesBy midnight, the band ___ (perform) for five hours straight.
When we meet, I will have waited for over twenty minutes.
Which sentence is grammatically correct?
Translate into English: 'Para cuando termine la obra, habrán estado construyendo el edificio por tres años.'
Put the words in order:
Match the subjects with the correct form:
If you don't call soon, I ___ (worry) about you for hours by now.
By Tuesday, we will have been travel for a week.
Choose the best option:
Translate into English: 'El próximo año, ella habrá estado trabajando como enfermera durante diez años.'
Arrange these words into a sentence:
By the time the festival ends, I ___ (dance) for almost twelve hours!
Score: /12
자주 묻는 질문 (8)
No, it is quite rare. Most native speakers will use the Future Continuous or Future Perfect Simple unless they specifically want to emphasize the duration of an action.
Yes, but only with 'I' and 'we', and it sounds extremely formal or old-fashioned. 'I shall have been working' is grammatically correct but rarely heard.
We use `by` to indicate the deadline or the point in time we are looking back from. We use `until` to show when the action stops. Example: 'By 5:00, I will have been working until I can't see straight.'
Yes, but remember that after 'when', we use the present tense to refer to the future. Example: 'When you arrive, I will have been waiting for an hour.'
Because 'know' is a stative verb. Stative verbs describe states, not actions, and English grammar generally forbids using them in any continuous (-ing) tense.
Technically, yes: 'will have been being + past participle'. However, it is so awkward that native speakers almost never use it. Instead of 'The car will have been being repaired for a week', we say 'The car will have been in the shop for a week'.
You can say 'Won't you have been working?' or 'Will you not have been working?'. The first is much more common in spoken English.
Almost always. Without a time expression like 'for two hours' or 'since morning', the tense loses its primary purpose of showing duration.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Futuro perfecto + gerundio
English always uses 'will have been', while Spanish has alternative verbs for duration.
Futur antérieur + en train de
French avoids the continuous aspect in the future perfect.
Futur II
German lacks a specific continuous form for the future perfect.
~te iru koto ni naru
Japanese focuses on the state/result rather than the auxiliary string 'will have been'.
sa + yakun + qad + kuntu
Arabic uses aspectual particles rather than a single continuous verb form.
yijing ... le
Chinese relies entirely on context and time adverbs.
Learning Path
Prerequisites
관련 동영상
Related Grammar Rules
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