B2 · 中上級 チャプター 13

ワンランク上の未来表現:ネイティブの絶妙なニュアンスを身につけよう

6 トータルルール
58 例文
7

Chapter in 30 Seconds

Master the art of temporal precision and talk about the future like a native speaker.

  • Describe actions in progress at specific future moments using the Future Continuous.
  • Express formal schedules and imminent events with professional accuracy.
  • Calculate long-term durations and revisit past intentions that never happened.
Don't just predict the future—describe it with vivid detail.

学べること

「未来」を語るとき、いつも will や be going to だけで済ませていませんか?この章では、中上級者のあなたにふさわしい、より解像度の高い未来表現をマスターします。まずは、特定の時間に「〜している最中」であることを伝える Future Continuous や、特定の時点までの継続期間を強調する Future Perfect Continuous。これらを使えば、未来の予定をただの事実ではなく、生き生きとした情景として描写できるようになります。また、公式な予定を表す be due to や、まさに今何かが起きようとしている be about to を使い分けることで、ビジネスでも日常でも、状況の切迫感や確実性を正確に伝えられるようになります。さらに、When などの接続詞の後のルールや、「あの時は〜するつもりだった」という「過去から見た未来」まで深掘りします。例えば、会議の開始時刻を正確に伝えたり、過去の計画変更を説明したりする場面で、あなたの英語は驚くほど自然で説得力のあるものに変わるはず。時間の流れを自由自在に操って、ネイティブのような繊細な表現力を手に入れましょう!

Learning Objectives

By the end of this chapter, you will be able to:

  1. 1
    By the end you will be able to describe your ongoing activities at a specific time tomorrow using 'will be -ing'.
  2. 2
    By the end you will be able to distinguish between informal and formal future schedules using 'be due to' and 'be about to'.
  3. 3
    By the end you will be able to express the duration of an action leading up to a future point using the Future Perfect Continuous.
  4. 4
    By the end you will be able to explain past plans that changed using 'was going to' and 'was about to'.

チャプターガイド

Overview

Mastering the nuances of future tense in English is a hallmark of truly advanced learners. If you're at the B2 level, you've likely moved past the basic will and going to, and you're ready to unlock a level of precision that will make your English sound incredibly natural and sophisticated. This chapter,
English looking ahead: advanced future forms,
is designed to equip you with the tools to express complex future ideas with confidence.
You'll discover how to paint vivid pictures of ongoing actions at a specific time in the future using the Future Continuous, making your descriptions much more dynamic. We'll also dive into ways to talk about imminent events, whether it's something casual that’s about to happen or a more dramatic, on-the-verge moment with be about to and be on the point of. For those scheduled events and professional contexts, be due to and be set to will add a layer of official precision to your speech.
And for the ultimate in future foresight, we'll explore the Future Perfect Continuous, a powerful tense that emphasizes duration leading up to a future milestone. By integrating these advanced future forms into your communication, you'll not only avoid sounding repetitive but also convey your thoughts with the clarity and naturalness of a native speaker. Get ready to elevate your B2 English grammar and truly sound amazing when discussing what's next!

How This Grammar Works

These advanced future forms allow you to convey detailed information about future events that simple will or going to cannot. They add layers of timing, expectation, and emphasis.
The Future Continuous (will be -ing) describes an action that will be in progress at a specific time in the future. Think of it like taking a snapshot of a future moment and seeing what's happening. For example:
This time next year, I will be living in London.
You're not just saying you'll live there; you're imagining yourself in the middle of the experience.
It's perfect for setting a scene.
For immediate futures, we have be about to and be on the point of. Be about to is informal and indicates something is happening very, very soon: "Hold on, I'm about to send that email.
Be on the point of is more formal and often used for more significant or dramatic imminent events, suggesting a critical juncture:
The negotiations were on the point of breaking down when a new proposal emerged." Both express urgency but with different shades of formality and impact.
When discussing scheduled or planned events, especially those that are official or arranged, be due to and be set to come into play. Be due to implies an official timetable or expectation:
The flight is due to depart at 3 PM.
Be set to suggests that something has been prepared or arranged to happen, often with a sense of inevitability or high probability:
The company is set to announce its new strategy next week.
These are vital for professional and formal communication.
Finally, the Future Perfect Continuous is our duration tense. It focuses on how long an action will *have been happening* up to a specific point in the future. It highlights the ongoing nature of an activity leading up to a future deadline or event. For instance:
By next May, I will have been studying English for five years.
This tells us not just that you'll still be studying, but the total accumulated time of study *up to that point*.
These forms allow for incredible precision, moving you far beyond basic future statements.

Common Mistakes

  1. 1Confusing Future Continuous with Simple Future for specific future actions.
✗ At 8 PM, I will eat dinner. (Implies starting dinner at 8 PM)
✓ At 8 PM, I will be eating dinner. (Implies being in the *middle* of eating dinner at 8 PM)
*Explanation:* The Future Continuous emphasizes the action's ongoing nature at a particular future moment.
  1. 1Using 'will' for officially scheduled events instead of more precise forms.
✗ The conference will begin at 9 AM tomorrow.
✓ The conference is due to begin at 9 AM tomorrow. / The conference is set to begin at 9 AM tomorrow.
*Explanation:* 'Be due to' and 'be set to' add a layer of official scheduling or pre-arrangement that 'will' often lacks, making your statement more precise and formal.
  1. 1Incorrectly forming or using the Future Perfect Continuous when duration is key.
✗ By the end of the month, I will have finished my project for three weeks.
✓ By the end of the month, I will have been working on this project for three weeks.
*Explanation:* The Future Perfect Continuous specifically highlights the *duration* of an ongoing action leading up to a future point, emphasizing how long something has already been happening.

Real Conversations

A

A

Hey, what are you doing next Saturday evening?
B

B

Oh, I can't meet up then. I'll be taking my final exam online. I'll probably be on the point of collapse from stress!
A

A

Oh no, good luck!
A

A

Did you hear about the new product launch?
B

B

Yes, I read about it. The company is set to unveil it at the tech fair, isn't it? It's due to happen on the 15th.
A

A

That's right! By then, they will have been developing it for almost two years.
A

A

Are you ready for your interview?
B

B

Almost! I'm just about to leave the house. I'm so nervous!
A

A

You'll do great!

Quick FAQ

Q

When should I use 'will be -ing' instead of a simple future with 'will' or 'going to'?

Use 'will be -ing' (Future Continuous) when you want to describe an action that will be *in progress* at a specific future time, or to talk about future arrangements as part of a general plan. It paints a picture of what's happening at that moment.

Q

What's the main difference between 'be about to' and 'be on the point of'?

'Be about to' is more common and informal, indicating immediate future action ("I'm about to call you"). 'Be on the point of' is more formal or dramatic, suggesting a critical moment or being right at the verge of a significant event (

The discovery was on the point of changing everything
).

Q

Can 'be set to' and 'be due to' be used interchangeably?

Often, but with a subtle difference. Both indicate scheduled events. 'Be due to' often implies an official or expected time based on a schedule (

The train is due to arrive
). 'Be set to' can imply a higher degree of certainty, preparation, or a predetermined plan, often with an emphasis on the outcome (
The team is set to win the championship
).

Q

Why is the Future Perfect Continuous considered an advanced tense?

It requires combining concepts of duration, completion, and future timing. It's advanced because it allows you to express how long an ongoing action *will have lasted* by a specific future point, showing not just an action, but its cumulative time up to that moment.

Cultural Context

Native English speakers use these advanced future forms constantly to add naturalness and precision to their speech. For instance, the Future Continuous is very common in everyday planning ("This evening, I'll be working late"). While 'be about to' is widely used informally for immediate actions, 'be on the point of' is less frequent in casual conversation and often appears in more formal or literary contexts to heighten drama.
Be due to and be set to are standard in news, business, and official announcements, making them essential for a professional tone. Mastering these allows B2 learners to sound much more integrated into diverse English-speaking environments.

重要な例文 (6)

1

This time tomorrow, we will be flying over the Atlantic.

This time tomorrow, we will be flying over the Atlantic.

未来進行形 (will be -ing)
2

She won't be answering her phone during the meeting.

She won't be answering her phone during the meeting.

未来進行形 (will be -ing)
3

The train `is due to depart` at 6:30 AM.

列車は午前6時30分に出発する予定です。

予定された未来 (~することになっている, ~する予定である)
4

My project `is set to be finished` by Friday.

私のプロジェクトは金曜日までに完了する予定です。

予定された未来 (~することになっている, ~する予定である)
5

By 6 PM, she `will have been waiting` for an hour.

Para las 6 PM, ella habrá estado esperando por una hora.

未来完了進行形:継続の時制
6

When you arrive, I `will have been working` on this report for three hours.

Cuando llegues, habré estado trabajando en este informe por tres horas.

未来完了進行形:継続の時制

ヒントとコツ (4)

💡

The 'Snapshot' Rule

If you can imagine taking a photo of the action at that future time, use the Future Continuous.
frontend.learn_grammar.from_rule: 未来進行形 (will be -ing)
💡

「たった今」を意識して!

これらの表現は、数秒・数分後に起こることにしか使いません。すぐそこに迫っている感覚が大事です。「I'm about to call you.」
frontend.learn_grammar.from_rule: 差し迫った未来: be about to & be on the point of
💡

be動詞の形をチェック!

主語に合わせて am, is, are を正しく使い分けましょう。
They are due to arrive
と言うべきところで、うっかり is を使わないように注意です。
frontend.learn_grammar.from_rule: 予定された未来 (~することになっている, ~する予定である)
💡

The 'For' Rule

If you are using 'for' to describe a duration in the future, check if you need the Future Perfect Continuous. It's the most reliable signal.
frontend.learn_grammar.from_rule: 未来完了進行形:継続の時制

重要な語彙 (7)

commence to start (formal) imminent about to happen duration the length of time something lasts milestone a significant stage or event anticipate to expect or predict provisional temporary or subject to change schedule a plan for carrying out a process

Real-World Preview

rocket

The Big Product Launch

Review Summary

  • will + be + [verb]-ing
  • be + about to + [verb]
  • be + due to + [verb]
  • will + have + been + [verb]-ing
  • was/were + going to + [verb]
  • When/As soon as + Present Simple/Perfect

よくある間違い

In English, we never use 'will' in a time clause starting with when, as soon as, or until. Use the present simple instead.

Wrong: I will call you when I will arrive at the hotel.
正解: I will call you when I arrive at the hotel.

The Future Perfect Continuous requires the '-ing' form to show ongoing duration. 'Worked' is for the Future Perfect Simple.

Wrong: Next year, I will have been worked here for ten years.
正解: Next year, I will have been working here for ten years.

To talk about a specific past plan that changed, use 'was going to'. 'Would' is usually for hypothetical situations or past habits.

Wrong: I would go to the party, but I got sick.
正解: I was going to go to the party, but I got sick.

このチャプターのルール (6)

Next Steps

You've just unlocked some of the most sophisticated structures in the English language. Your ability to express time is now at a high-intermediate level. Keep practicing these in your daily conversations!

Write your 5-year career plan using at least 4 different future forms.

Listen to a news broadcast and identify instances of 'is due to' or 'is set to'.

クイック練習 (10)

Identify the error in the sentence.

Find and fix the mistake:

By next week, she will has been living here for a month.

✓ Correct! ✗ Not quite. Correct answer: will has
After 'will', we must use the base form 'have', never 'has'.

frontend.learn_grammar.from_rule: 未来完了進行形:継続の時制

Complete the sentence with the correct form of the verb in parentheses.

By the time the guest arrives, I ___ (cook) for three hours.

✓ Correct! ✗ Not quite. Correct answer: will have been cooking
We need the Future Perfect Continuous to show the duration (three hours) up to a future point.

frontend.learn_grammar.from_rule: 未来完了進行形:継続の時制

Find the error.

Find and fix the mistake:

He said he will be here at 5.

✓ Correct! ✗ Not quite. Correct answer: He said he would be here at 5.
Reported speech requires backshifting.

frontend.learn_grammar.from_rule: Future in the Past: Was Going To, Would, Was About To

Fill in the blank.

We ___ (visit) London, but we went to Rome instead.

✓ Correct! ✗ Not quite. Correct answer: were going to visit
Past intention that didn't happen.

frontend.learn_grammar.from_rule: Future in the Past: Was Going To, Would, Was About To

Find the mistake in the sentence.

Find and fix the mistake:

I will be knowing the results by tomorrow morning.

✓ Correct! ✗ Not quite. Correct answer: will be knowing -> will know
'Know' is a stative verb and cannot be used in the continuous form.

frontend.learn_grammar.from_rule: 未来進行形 (will be -ing)

Choose the correct sentence.

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: When I see him, I'll talk.
Standard time clause structure.

frontend.learn_grammar.from_rule: Future Time Clauses: When I Do vs. When I Have Done

Select the best fit.

I knew the project ___ succeed.

✓ Correct! ✗ Not quite. Correct answer: would
Prediction in the past.

frontend.learn_grammar.from_rule: Future in the Past: Was Going To, Would, Was About To

Choose the best tense for the context.

I'm so tired! By the time I get home, I ___ for ten hours.

✓ Correct! ✗ Not quite. Correct answer: will have been working
The context emphasizes the duration and the cause of tiredness.

frontend.learn_grammar.from_rule: 未来完了進行形:継続の時制

Find the mistake.

Find and fix the mistake:

After I will finish, I will go.

✓ Correct! ✗ Not quite. Correct answer: will finish
Remove 'will' from the time clause.

frontend.learn_grammar.from_rule: Future Time Clauses: When I Do vs. When I Have Done

Choose the correct sentence.

Which sentence is correct?

✓ Correct! ✗ Not quite. Correct answer: I was about to leave when it rained.
Requires 'to' + base verb.

frontend.learn_grammar.from_rule: Future in the Past: Was Going To, Would, Was About To

Score: /10

よくある質問 (6)

Yes, but only with 'I' and 'we'. It is very formal and mostly used in British English. Example: I shall be waiting.
They are very similar. I'll be doing is more common for predictions and routines, while I'm going to be doing emphasizes a strong intention or a plan already made.
数秒後や数分後という、極めて近い未来に何かが起こることを示します。まさに「〜の瀬戸際」にいる感覚です。 "I'm about to hit send on this email."
同じく直近の未来ですが、よりフォーマルだったり、ドラマチックな「重大な転換点」というニュアンスを含みます。
The company was on the point of closing down.
これらは、すでに計画・スケジュール・期待されている未来の出来事を表します。
The concert is set to begin at 8 PM
のように、確実性や事前の段取りを感じさせます。
「主語 + be動詞 + due to / set to + 動詞の原形」です。例えば、
The report is due to be submitted
のようになります。