Future Perfect Tense – Complete Guide to Action Completed Before Future Time | AdvancedEnglishLab.com

What is Future Perfect?
Word Meaning: Future Perfect = an advanced tense describing an action that WILL BE COMPLETED before a specific time or event in the future. It looks back from a future point and says action is already finished by then.
Phrasal Verb Meaning: look ahead = think about future. Example: When you look ahead, you imagine future achievements.
The future perfect tense will allow you to speak about the future in a really interesting way that may not exist in your own language.
We use it in two ways:
- To talk about an action that will be completed before a specific time in the future.
- To talk about an action that will be completed before another action in the future.
Imagine you are a university student now (present). Six months from now, you will finish university. A year from now, next year at this time, what things will already be over? Next year at this time, I will have finished university. I will have completed all my classes. I will have passed all my exams.
2. When to Use the Future Perfect Tense
ITEM 1: Completed Before Specific Future Time
Word Meaning: Specific future time = a point like By next July, By 9:00, By Monday, By next summer, By 2026.
Phrasal Verb Meaning: move to = relocate. set up = establish.
- By next July, they will have moved to the States. – Moving will be completed before July next year. Structure: will have moved (past participle of move).
- By next July, they will have started new jobs. – Starting jobs completed before that July.
- By next July, they will have bought a home. – Buying completed before July. All three things will have happened already before that time.
- By 9:00, the meeting will have finished. – By 9 o’clock future time, finish completed.
- By Monday, he will have started his new job. – Before Monday.
- By next summer, I will have graduated. – Graduation completed before summer.
- By 2026, she will have written three books. – Writing completed before 2026.
- By tomorrow morning, they will have arrived in London. – Arrival before tomorrow morning.
- By next year, he will have retired. – Retirement before next year. Retire = stop working.
- By December, we will have completed the project. – Project completion before December.
ITEM 2: Completed Before Another Action in Future
Word Meaning: Linking two future events – first event completed before second future event happens. Uses before, by the time.
Phrasal Verb Meaning: go to bed = sleep.
- Before you arrive, we will have eaten dinner. – Eating completed before your arrival. Both in future, but eating happens first.
- Before you arrive, the kids will have gone to bed. – Kids sleeping completed before arrival. will have gone = past participle of go.
- By the time he gets to the airport, the flight will have arrived. – Flight arrival before his getting to airport.
- By the time I finish university, I will have taken 40 courses. – Taking courses before finishing.
- Before the guests leave, we will have served dessert. – Serving before leaving.
- By the time she is 30, she will have visited 20 countries. – Visiting before age 30 future point.
- Before the store closes, we will have bought everything. – Buying before closing.
- By the time you wake up, I will have left. – Leaving before waking.
- Before winter starts, they will have built the house. – Building before winter.
- By the time the movie starts, we will have found seats. – Finding before start.
ITEM 3: Common Time Expressions
Word Meaning: Time expressions signal future perfect.
Phrasal Verb Meaning: look up = search.
- by – By next July, By 9:00, By Monday
- by the time – By the time you arrive, By the time I finish, By the time he gets
- before – Before you arrive, Before winter
- by then / by that time – Will you have arrived by then?
- until – Until is less common, but can be used with negative: We won’t have finished until midnight.
- in a year / next August / by next month – Future point markers.
- Example with by: By next August, we will have been married for 25 years. – By next August = specific future time.
- Example with before: Before 3:00, he will have given his presentation. – Before 3:00 = before specific time.
3. How to Use – Grammatical Explanation – Structure, Negative, Questions
ITEM 4: Positive Structure – Subject + will have + Past Participle
Word Meaning: Subject = I, You, We, They, He, She, It or any noun. Past Participle = V3 for regular verbs same as past tense (worked, brushed), for irregular verbs third form (gone, seen, left, done, given, taken, written).
Phrasal Verb Meaning: carry out = complete.
- I will have arrived in Tokyo 24 hours from now. – Regular verb arrive -> arrived. I will have arrived.
- You will have arrived by 8pm. – Same structure for You.
- We will have arrived by noon. – We will have arrived.
- They will have arrived home by then. – They will have arrived.
- He will have arrived tomorrow. – He will have arrived.
- She will have arrived by next week. – She will have arrived.
- It will have arrived – the parcel / email will have arrived. – It will have arrived.
- I will have finished university. – I will have finished – regular verb.
- I will have completed my courses. – Complete -> completed.
- I will have attended my classes. – Attend -> attended.
Irregular Verb Examples:
- They will have left by that time. – Leave -> left -> left (3rd form left).
- He will have done his homework. – Do -> did -> done.
- They will have given a presentation. – Give -> gave -> given.
- We will have taken the exam. – Take -> took -> taken.
- She will have written the report. – Write -> wrote -> written.
- I will have gone to college. – Go -> went -> gone.
- She will have spoken to John by next week. – Speak -> spoke -> spoken.
- I will have been married for 25 years. – Be -> was/were -> been (very common in future perfect).
- We will have had dinner. – Have -> had -> had. We will have had dinner – have dinner is expression, past participle had.
- By 3:00, he will have given his presentation. – Give -> given.
ITEM 5: Negative Structure – will not have + V3 / won’t have + V3
Word Meaning: Negative = action will NOT be completed. Add not after will.
Phrasal Verb Meaning: put off = postpone.
- I will not have arrived by that time. – Negative regular verb.
- You will not have arrived. – You will not have arrived.
- We will not have arrived. – We will not have arrived.
- They will not have arrived. – They will not have arrived.
- He will not have arrived. – He will not have arrived.
- I will not have finished work by 8:00pm. – I will not have finished.
- They will not have left by then. – They will not have left – irregular.
- They will not have done their homework. – Do -> done negative.
- By next year, he will not have retired. – He will not have retired.
- She will not have spoken to John by next week. – She will not have spoken.
ITEM 6: Question Structure – Will + Subject + have + V3 ?
Word Meaning: Question inverts will and subject. WH questions add By what time / How many / etc.
Phrasal Verb Meaning: find out = discover.
- Will you have arrived by 8:00? – Will + you + have + arrived? Question form.
- Will they have arrived home by then? – Will they have arrived?
- Will she have arrived tomorrow? – Will she have arrived?
- Will they have left by that time? – Will they have left? Irregular.
- Will she have left? – Short question.
- Will he have eaten by then? – Will he have eaten? Eat -> ate -> eaten.
- By what time will they have arrived? – WH phrase: By what time + will + they + have + arrived? Note small letter after By what time.
- Will you have finished shopping by that time? – Correct question order – not You will have finished shopping? but Will you have finished…?
- Will he have retired by next year? – Will he have retired?
- Will she have spoken to John by next week? – Will she have spoken?
4. Contractions – Informal vs Formal
ITEM 7: Contractions – Positive and Negative
Word Meaning: Contraction = shortened form using apostrophe. Informal conversation/email uses contractions. Formal business/academic writing does NOT use contractions.
Phrasal Verb Meaning: cut down = shorten.
- I will have moved -> I’ll have moved. – I will = I’ll – hear the L sound, otherwise sounds like I have moved (different tense).
- You will have moved -> You’ll have moved. – You’ll have moved.
- We will have moved -> We’ll have moved. – We’ll have moved.
- They will have moved -> They’ll have moved. – They’ll have moved – sentence: They’ll have moved by July.
- He will have moved -> He’ll have moved. – He’ll have moved.
- She will have moved -> She’ll have moved. – She’ll have moved by then.
- It will have moved -> It’ll have moved. – It’ll have moved.
- Negative: I will not have moved -> I won’t have moved. – Will not = won’t – illogical but must memorize. Linguistic history reason.
- You won’t have moved, We won’t have moved, They won’t have moved, He won’t have moved, She won’t have moved. – All negative contractions.
- Example: I won’t have finished work by 8pm. – Contraction negative in real sentence.
5. Spelling Rules for Regular and Irregular Past Participles
ITEM 8: Spelling Changes – Regular Verbs
Word Meaning: Past Participle of regular verb = add -ed, with spelling adjustments.
Phrasal Verb Meaning: write down = note.
- Most verbs: add -ed: work -> worked, check -> checked, finish -> finished, start -> started, arrive -> arrived, retire -> retired. – Basic rule.
- Verbs ending in e: add only -d: live -> lived, change -> changed, move -> moved, arrive -> arrived, retire -> retired. – Already has e, just add d.
- Verbs ending in consonant + y: y -> ied: try -> tried, study -> studied, cry -> cried. I will have tried my best. I will have studied for exam. – y after consonant changes to ied.
- Verbs ending in vowel + y: add -ed: play -> played, enjoy -> enjoyed. – y after vowel stays.
- Verbs ending in C-V-C (Consonant-Vowel-Consonant): double last letter + ed: plan -> planned, ship -> shipped, hug -> hugged, stop -> stopped. C = consonant, V = vowel A,E,I,O,U. Check from end: plan = n consonant, a vowel, l? Actually plan = p-l-a-n, last n consonant, a vowel, l? Wait plan ends a-n, but pattern plAn – need to look. Ship = s-h-i-p: p consonant, i vowel, p? Actually ship ends i-p, but c-v-c pattern means double. Example: plan -> planned, hug -> hugged. – Important for correct spelling.
- By next month, we will have planned the conference. – Not planed but planned – double n because c-v-c.
- They will have shipped your order. – Ship -> shipped double p.
- He will have hugged his child. – Hug -> hugged double g.
- Example error: By Monday, he will have start his new job. – Error: start should be started. Need -ed.
- Correct: By Monday, he will have started his new job. – Fixed.
ITEM 9: Irregular Verbs Past Participles
Word Meaning: Irregular verbs have 3 forms: base, past, past participle. Must memorize.
Phrasal Verb Meaning: go over = review.
- go – went – gone: I will have gone. – I will have gone by then.
- do – did – done: He will have done his homework. – Done is past participle.
- give – gave – given: They will have given. – Given.
- take – took – taken: We will have taken the exam. – Taken.
- write – wrote – written: She will have written the report. – Written double t.
- teach – taught – taught: They will have taught thousands of children. – Teach -> taught. Error example: they will have teach -> should be taught.
- leave – left – left: They will have left. – Left same as past.
- speak – spoke – spoken: She will have spoken to John. – Spoken.
- be – was/were – been: We will have been married. – Been very common.
- have – had – had: We will have had dinner. – Had.
6. Practice and Common Errors
ITEM 10: Practice Exercises – Convert to Future Perfect
Word Meaning: Practice = apply rules.
Phrasal Verb Meaning: work out = solve.
- By the time he gets to the airport, the flight ____ (arrive). – Answer: will have arrived – regular verb + ed.
- Next August, we ____ (be) married for 25 years. – Answer: will have been – irregular be -> been.
- By 3:00, he ____ (give) his presentation. – Answer: will have given – irregular give -> given.
- By 9:00pm, we ____ (have) dinner. – Answer: will have had – have -> had, expression have dinner.
- I ____ (finish) work by 8:00pm. Negative. – Answer: will not have finished / won’t have finished – regular finish -> finished.
- They ____ (do) their homework. Negative. – Answer: will not have done / won’t have done – do -> done.
- ___ he _______ (eat) by then? Question. – Answer: Will he have eaten by then? – eat -> eaten.
ITEM 11: Common Errors to Avoid
Word Meaning: Error = mistake in verb form, spelling, question order.
Phrasal Verb Meaning: watch out for = be careful.
- Error Regular Verb Form: By Monday, he will have start his new job. – Wrong: start not changed. Correct: will have started – must add -ed.
- Error Irregular Verb Form: In next few years, they will have teach thousands. – Wrong: teach is base form. Correct: will have taught – need 3rd form.
- Error Spelling CVC: By next month, we will have planed conference. – Wrong: planed = one n. Correct: planned – double n because c-v-c.
- Error Question Order: You will have finished shopping by that time? – Understandable but incorrect as question. Correct: Will you have finished shopping by that time? – Will + subject inversion.
- Error Missing have: He will retired by next year. – Wrong: missing have. Correct: will have retired.
- Error Wrong Participle: He will have went. – Wrong: went is past, not participle. Correct: will have gone.
- Error Contraction Mishearing: I’ll have moved sounds like I have moved. – Pronunciation tip: Emphasize L in I’ll, otherwise confused with present perfect I have moved.
- Error: Won’t vs Willn’t. – Wrong: willn’t does not exist. Correct: won’t – memorize.
Special Tips
Tip 1 – Key is will have: Remember will have + V3 always. Doesn’t matter subject, will have never changes. I will have, You will have, He will have – all same. Then just add correct past participle.
Tip 2 – Timeline Visualization: Draw now line and future point By next July. Shade area before July – action completed in that shaded area. Future perfect = looking back from July saying already finished.
Tip 3 – Formal Writing: In business emails and academic papers, avoid contractions. Write I will have moved, not I’ll have moved. In informal chat, contractions natural.
Tip 4 – Regular vs Irregular Lists: Keep list of irregular verbs in notebook. Regular verbs easy: just add -ed with spelling rules. Irregular must memorize third form. Most common errors come from irregular.
Exercise Part – Full Practice
Exercise A – Fill Future Perfect:
- By next July, they ____ (move) to the States.
- By next July, they ____ (start) new jobs.
- By next July, they ____ (buy) a home.
- Before you arrive, we ____ (eat) dinner.
- By the time he gets to airport, flight ____ (arrive).
- Next August, we ____ (be) married 25 years.
- By 3:00, he ____ (give) presentation.
- By 9pm, we ____ (have) dinner.
Exercise B – Negative:
9. I ____ (not finish) work by 8pm.
10. They ____ (not do) homework by then.
11. He ____ (not retire) by next year.
Exercise C – Questions:
12. ____ you ____ (arrive) by 8:00?
13. ____ they ____ (leave) by then?
14. By what time ____ they ____ (arrive)?
Exercise D – Correct Errors:
15. By Monday he will have start job.
16. They will have teach children.
17. We will have planed conference.
18. You will have finished by then? (make question)
Answers: 1 will have moved, 2 will have started, 3 will have bought, 4 will have eaten, 5 will have arrived, 6 will have been, 7 will have given, 8 will have had, 9 will not have finished / won’t have finished, 10 will not have done, 11 will not have retired, 12 Will you have arrived, 13 Will they have left, 14 By what time will they have arrived?, 15 will have started, 16 will have taught, 17 will have planned, 18 Will you have finished by then?
Competitive Exams – IELTS, GRE, TOEFL
IELTS: Future perfect is Band 8+ grammar for Writing Task 1 future projections and Task 2 predictions. Example: By 2030, governments will have built more sustainable cities. Using will have + V3 correctly shows advanced range. Avoid basic errors like will have start. In Speaking Part 3, use for future achievements: By next year, I will have completed my degree. Shows mastery.
TOEFL: TOEFL iBT Writing integrated task often asks about future outcomes. By the time project ends, researchers will have collected data. Use before + clause structure. Listening: Recognize will have arrived, will have left as future perfect – not present perfect. Contractions: TOEFL listening often uses I’ll, won’t – recognize L sound.
GRE: GRE Text Completion tests irregular past participles: will have taught vs teached, will have gone vs went. Also tests time markers: by, by the time, before trigger future perfect. In GRE Analytical Writing, use future perfect for vision: By the time I finish graduate school, I will have published two papers. Shows sophisticated academic timeline control.






















