B1 · 中級 チャプター 21

Imagining Possibilities and the Future

6 トータルルール
60 例文
7

Chapter in 30 Seconds

Master the art of hypothetical thinking and future planning in French.

  • Construct complex sentences using 'Si' to express conditions.
  • Express future completion with the Futur Antérieur.
  • Navigate past regrets and dreams using the Conditional and Plus-Que-Parfait.
Unlock the power of possibilities and past reflections.

学べること

Ready to elevate your French conversations, language hero? In this chapter, we're not just sticking to present realities; we're diving deep into the world of If this happens... and

If only that had happened...
to help you sound incredibly natural, just like a native French speaker. First, you'll master the Futur Antérieur to say things like,
By then, I will have finished that task.
Imagine confidently detailing your future plans:
By tomorrow night, I will have completed my project.
Then, we'll move to the Conditionnel Présent, your go-to for polite requests (
I would like a coffee...
) or for sharing your wildest dreams (
If I had money, I would travel the world...
). Next up are the fantastic Si clauses! You'll learn how to express real future possibilities with
Si + Present + Future Simple
:
If it rains, we will stay home.
But wait, it gets even more exciting! With Si + Imparfait + Conditionnel, you can make grand wishes or give gentle advice:
If I were you, I would study more.
After that, we tackle the Conditionnel Passé, allowing you to express past regrets or imagine how things would have been if circumstances were different. Finally, the ultimate challenge: the Si + Plus-Que-Parfait construction. This lets you articulate the deepest regrets or imagine alternative past outcomes with complete grammatical precision: "If I hadn't arrived late, I wouldn't have missed the train." This chapter empowers you to enrich and complicate your conversations beautifully. Describing hypothetical situations, dreams, plans, or even your deepest regrets will become second nature. Are you ready to articulate possibilities and the future in French like a true local? Let's go!

Learning Objectives

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

  1. 1
    By the end you will be able to: Construct a coherent paragraph discussing a future project and a hypothetical alternative past.

チャプターガイド

Overview

Ready to elevate your French conversations, language hero? In this chapter, we're not just sticking to present realities; we're diving deep into the world of If this happens... and
If only that had happened...
to help you sound incredibly natural, just like a native French speaker. This is a crucial step for your French grammar B1 journey, moving you beyond basic sentence structures to nuanced expression.
Mastering these tenses will unlock your ability to discuss possibilities, future plans, hypothetical scenarios, and even regrets with precision and elegance.
We'll tackle essential concepts like the Futur Antérieur (Future Perfect), which allows you to project into the future and describe actions that *will have been completed* by a certain point. Then, we'll explore the versatile Conditionnel Présent (Conditional Present), your go-to for polite requests, wishes, and hypothetical situations. The heart of this chapter lies in understanding French Si clauses, which are indispensable for expressing conditions and their outcomes.
Finally, we'll delve into the past with the Conditionnel Passé (Conditional Past) to talk about what *would have happened*, and the powerful Si + Plus-Que-Parfait construction, perfect for articulating deep regrets or imagining alternative past outcomes. By the end of this chapter, you'll have a robust toolkit for expressing complex ideas, making your French possibilities and future discussions sound incredibly sophisticated. Get ready to enrich your French future expressions and truly level up your communication!

How This Grammar Works

This chapter introduces a powerful set of French grammar tools to express possibilities, conditions, and future actions. First, the Futur Antérieur (Future Perfect) describes an action that will be completed before another future action or a specific future time. It's formed with the future simple of *avoir* or *être* + the past participle of the main verb.
For example: *Quand tu arriveras, j'aurai déjà mangé* (When you arrive, I will have already eaten). Or, *Elle sera partie avant ton réveil* (She will have left before you wake up).
Next, the Conditionnel Présent (Conditional Present) is used for polite requests, suggestions, and hypothetical situations. It's formed by taking the future simple stem of a verb and adding the imperfect endings (-ais, -ais, -ait, -ions, -iez, -aient). For instance: *Je voudrais un café* (I would like a coffee), or *Si j'avais le temps, je voyagerais* (If I had the time, I would travel).
We then dive into French Si clauses, which express conditions. The first type, for real future possibilities, uses Si + Présent + Futur Simple: *Si tu étudies, tu réussiras* (If you study, you will succeed). For hypothetical situations or advice, we use Si + Imparfait + Conditionnel Présent: *Si j'étais toi, j'irais le voir* (If I were you, I would go see him).
The Conditionnel Passé (Conditional Past) expresses actions that *would have happened* in the past if circumstances had been different, or regrets. It's formed with the conditional present of *avoir* or *être* + the past participle. For example: *J'aurais dû t'écouter* (I should have listened to you), or *Nous serions partis plus tôt* (We would have left earlier).
Finally, the most advanced structure for expressing past regrets or hypothetical past outcomes is Si + Plus-Que-Parfait + Conditionnel Passé: *Si j'avais su, je ne serais pas venu* (If I had known, I would not have come). This allows for complex reflections on what *could have been*.

Common Mistakes

  1. 1Wrong: *Si j'aurais de l'argent, j'achèterais une voiture.*
Correct: *Si j'avais de l'argent, j'achèterais une voiture.*
*Explanation:* A very common error is using the conditional after si when expressing a hypothetical situation. Remember the rule: Si is never followed by the conditional. For hypothetical 'if' clauses, use the Imparfait after si when the consequence is in the Conditionnel Présent.
  1. 1Wrong: *Quand j'aurai finis mon travail, je t'appellerai.*
Correct: *Quand j'aurai fini mon travail, je t'appellerai.*
*Explanation:* Even though *avoir* is used as the auxiliary in the Futur Antérieur, the past participle *fini* does not agree with the subject. Past participles with *avoir* only agree with a preceding direct object. If the auxiliary is *être*, then agreement is required (e.g., *Quand elle sera partie...*).
  1. 1Wrong: *Si j'étais venu plus tôt, je n'aurais pas manqué le début.*
Correct: *Si j'étais venu plus tôt, je n'aurais pas manqué le début.*
*Explanation:* This example is actually correct! The mistake would be if the speaker used *j'aurais venu* instead of *j'étais venu*. This highlights the importance of choosing the correct auxiliary (*être* or *avoir*) for the Plus-Que-Parfait and Conditionnel Passé, and ensuring agreement with *être*. *Venir* always uses *être*.

Real Conversations

A

A

*Tu penses que tu auras fini ton rapport d'ici vendredi ?* (Do you think you will have finished your report by Friday?)
B

B

*Oui, je l'aurai certainement terminé. Si tout va bien, je te l'enverrai jeudi soir.* (Yes, I will certainly have finished it. If all goes well, I will send it to you Thursday evening.)
A

A

*Si tu avais plus de temps libre, qu'est-ce que tu ferais ?* (If you had more free time, what would you do?)
B

B

*Oh, si j'avais plus de temps, je voyagerais en Asie. J'aimerais tellement découvrir de nouvelles cultures.* (Oh, if I had more time, I would travel to Asia. I would love so much to discover new cultures.)
A

A

*J'aurais dû vérifier la météo avant de partir, il pleut des cordes !* (I should have checked the weather before leaving, it's pouring rain!)
B

B

*Oui, si tu avais regardé, tu aurais pris ton parapluie. On ne serait pas trempés maintenant !* (Yes, if you had looked, you would have taken your umbrella. We wouldn't be soaked now!)

Quick FAQ

Q

When do I use Futur Antérieur versus Futur Simple in French?

Use the Futur Simple for actions that will happen at a specific point in the future. Use the Futur Antérieur for actions that *will have been completed* before another future action or time, emphasizing completion.

Q

What's the main difference between Conditionnel Présent and Conditionnel Passé?

The Conditionnel Présent expresses hypothetical actions, wishes, or polite requests in the present or future. The Conditionnel Passé expresses hypothetical actions or regrets about the past – what *would have happened* or *should have happened*.

Q

Can I use si with the Futur Simple in a condition clause?

No, you cannot directly follow si with the Futur Simple. For real future possibilities, use Si + Présent, and the consequence will be in the Futur Simple (e.g., *Si tu viens, je serai content* - If you come, I will be happy).

Q

How do French speakers express deep regret about something that happened in the past?

The most common and grammatically precise way is using the Si + Plus-Que-Parfait construction for the condition, followed by the Conditionnel Passé for the outcome (e.g., *Si j'avais su, je n'aurais pas fait ça* - If I had known, I wouldn't have done that).

Cultural Context

These grammatical structures are deeply embedded in everyday French conversation, allowing for great nuance. The Conditionnel Présent is particularly vital for politeness, often used in requests or suggestions (*Je voudrais...*, *Pourriez-vous...*). News reports frequently use the Conditionnel Présent to report unconfirmed information (*Le président aurait déclaré...* - The president reportedly declared...), adding a layer of journalistic caution.
Si clauses and the Conditionnel Passé are frequently used for reflecting on choices, giving advice, or simply dreaming aloud, making them indispensable for sounding like a true local.

重要な例文 (8)

1

Je voudrais un café, s'il vous plaît.

I would like a coffee, please.

丁寧な依頼と「もし〜なら」(条件法現在)
2

Tu devrais poster cette photo sur Instagram.

You should post this photo on Instagram.

丁寧な依頼と「もし〜なら」(条件法現在)
3

Si tu finis tes devoirs, tu pourras regarder Netflix.

宿題が終わったら、Netflixを見てもいいよ。

フランス語の Si 節:〜すれば〜するだろう(現在 + 未来)
4

S'il fait beau demain, nous irons à la plage.

もし明日天気が良ければ、ビーチに行きましょう。

フランス語の Si 節:〜すれば〜するだろう(現在 + 未来)
5

J'aurais dû recharger mon téléphone avant de sortir.

外出する前に、携帯電話を充電しておくべきだったな。

フランス語の条件法過去:「〜しただろうに」の表現 (Conditionnel Passé)
6

Tu serais venu à la fête si je t'avais envoyé un SMS ?

もし私が君にSMSを送っていたら、パーティーに来てくれたかな?

フランス語の条件法過去:「〜しただろうに」の表現 (Conditionnel Passé)
7

Si j'avais chargé mon téléphone, je t'aurais envoyé un message.

もし携帯を充電していたら、メッセージを送ったのに。

フランス語の第3条件法:後悔の表現 (Si + Plus-Que-Parfait)
8

Si nous n'avions pas manqué le train, nous serions arrivés à l'heure.

もし電車に乗り遅れていなかったら、時間通りに着いただろうに。

フランス語の第3条件法:後悔の表現 (Si + Plus-Que-Parfait)

ヒントとコツ (4)

💡

複合過去とのリンク

助動詞の選び方は複合過去と全く同じです! être を使う動詞(移動や再帰動詞)を思い出してね。
Elle sera allée au marché.
frontend.learn_grammar.from_rule: フランス語の未来完了:「〜し終えているだろう」(Futur Antérieur)
💡

Politeness

Always use 'Je voudrais' when ordering.
frontend.learn_grammar.from_rule: 丁寧な依頼と「もし〜なら」(条件法現在)
⚠️

「R」の音に注目!

未来形の動詞には、語尾の前に必ず「R」の音が入ります。Je mangerai のように、Rが聞こえなければ未来の話ではないかもしれません!
frontend.learn_grammar.from_rule: フランス語の Si 節:〜すれば〜するだろう(現在 + 未来)
⚠️

「R」のルールに注意!

si のすぐ後ろに、条件法(-raisで終わる形)を置いてはいけません。必ず半過去を使いましょう。 "Si j'avais le temps..."
frontend.learn_grammar.from_rule: もし私があなたなら... (Si + 半過去の条件文)

重要な語彙 (5)

si if regret regret d'ici by (time) souhaiter to wish au cas où in case

Real-World Preview

plane

Planning a Trip

Review Summary

  • Futur simple of avoir/être + participe passé
  • Stem (futur) + Imparfait endings
  • Si + Présent + Futur
  • Si + Imparfait + Conditionnel Présent
  • Conditionnel (avoir/être) + participe passé
  • Si + Plus-que-parfait + Conditionnel Passé

よくある間違い

You cannot put the conditional in the 'Si' clause. Use Imparfait instead.

Wrong: Si j'irais, je verrais.
正解: Si j'allais, je verrais.

Actually, this is correct! Watch out for using the future in the 'Si' clause; it must be present.

Wrong: Si je sais, je viendrai.
正解: Si je sais, je viendrai.

The 'Si' clause requires the Plus-Que-Parfait, not the conditional.

Wrong: Si j'aurais su, j'aurais fait.
正解: Si j'avais su, j'aurais fait.

このチャプターのルール (6)

Next Steps

You have mastered the most complex logic in the French language. Keep practicing and you will sound like a native in no time!

Write a letter to your past self using the third conditional.

クイック練習 (10)

正しい時制を選んで空欄を埋めてください。

Si tu m'aides, je (finir) ___ plus vite.

✓ Correct! ✗ Not quite. Correct answer: finirai
'si' 節が現在形 ('aides') なので、結果の部分は単純未来形 ('finirai') になります。

frontend.learn_grammar.from_rule: フランス語の Si 節:〜すれば〜するだろう(現在 + 未来)

この文の間違いを見つけて修正しましょう。

Find and fix the mistake:

Si elle serait resté, nous aurions mangé ensemble.

✓ Correct! ✗ Not quite. Correct answer: Si elle était restée, nous aurions mangé ensemble.
「rester」のような移動動詞は助動詞「être」を使います。女性主語「elle」の場合、過去分詞は「restée」でなければなりません。また、「si」の後には条件法ではなくPlus-que-parfaitが続きます。

frontend.learn_grammar.from_rule: フランス語の第3条件法:後悔の表現 (Si + Plus-Que-Parfait)

文法的に正しい文章はどれですか?

正しい 'Si' 節の構造を選んでください:

✓ Correct! ✗ Not quite. Correct answer: Si j'ai le temps, je t'appellerai.
'si' の直後は現在形、結果の部分は未来形にするのが正しいルールです。

frontend.learn_grammar.from_rule: フランス語の Si 節:〜すれば〜するだろう(現在 + 未来)

この文の間違いを見つけて修正しましょう。

Find and fix the mistake:

Nous aurais aimé partir en vacances en France.

✓ Correct! ✗ Not quite. Correct answer: Nous aurions aimé partir en vacances en France.
主語が「Nous」の場合、助動詞は「aurais」ではなく「aurions」を使います(「aurais」は「je」または「tu」の場合)。

frontend.learn_grammar.from_rule: フランス語の条件法過去:「〜しただろうに」の表現 (Conditionnel Passé)

文法的に正しい文を選びましょう。

正しい過去仮定の文を選びましょう。

✓ Correct! ✗ Not quite. Correct answer: Si j'avais eu ton numéro, je t'aurais appelé.
この文は「Si + Plus-que-parfait」と「Conditionnel passé」を正しく使っています。他の選択肢は「si」の後に条件法を使っているため誤りです。

frontend.learn_grammar.from_rule: フランス語の第3条件法:後悔の表現 (Si + Plus-Que-Parfait)

動詞 'étudier' の正しい形で空欄を埋めましょう。

Si tu ___, tu aurais réussi ton examen.

✓ Correct! ✗ Not quite. Correct answer: avais étudié
過去の仮定を表す「si」節では、Plus-que-parfait(avais + 過去分詞)を使います。

frontend.learn_grammar.from_rule: フランス語の第3条件法:後悔の表現 (Si + Plus-Que-Parfait)

動詞 'finir' を使って、前未来の正しい形を空欄に入れてね。

Demain à cette heure-ci, j'___ mon projet.

✓ Correct! ✗ Not quite. Correct answer: aurai fini
finir は avoir を使う動詞なので、avoir の未来形 (aurai) + 過去分詞 (fini) になります。

frontend.learn_grammar.from_rule: フランス語の未来完了:「〜し終えているだろう」(Futur Antérieur)

女性が話す場合の文として正しいものを選びましょう。

Choose the grammatically correct sentence:

✓ Correct! ✗ Not quite. Correct answer: Je serais venue si j'avais su.
動詞「venir」は助動詞に「être」を使うため、女性主語「Je」と過去分詞は性数一致して「venue」となります。

frontend.learn_grammar.from_rule: フランス語の条件法過去:「〜しただろうに」の表現 (Conditionnel Passé)

Fix the sentence.

Find and fix the mistake:

Si j'aurais su, je serais venu.

✓ Correct! ✗ Not quite. Correct answer: Si j'avais su
No conditional after si.

frontend.learn_grammar.from_rule: 丁寧な依頼と「もし〜なら」(条件法現在)

文章の間違いを見つけて直してください。

S'il fera beau, nous irons au parc.

✓ Correct! ✗ Not quite. Correct answer: S'il fait beau, nous irons au parc.
'si' の後の動詞は未来形 ('fera') ではなく、現在形 ('fait') にする必要があります。

frontend.learn_grammar.from_rule: フランス語の Si 節:〜すれば〜するだろう(現在 + 未来)

Score: /10

よくある質問 (6)

未来のある時点、または別の未来の動作よりも前に完了する動作を表します。 "J'aurai fini mon travail avant ton arrivée."
助動詞(avoir か être)の単純未来形に、メインの動詞の過去分詞を組み合わせます。 "J'aurai« + »mangé" のようになります。
It makes requests less demanding.
No, never.
フランス語の論理では、条件は「今」設定され、結果が「未来」に起こると考えるからです。英語の 'If I go' と同じ感覚ですよ!
Si je pars, je serai triste.
いいえ、実は 'si' だけが少し特殊です。'quand'(〜の時)などは未来形を使いますが、'si' は必ず現在形を使います。
Si tu es là...