Chapter in 30 Seconds
Master the art of planning, reflecting on the past, and articulating complex regrets with native-level precision.
- Conjugate the Future Subjunctive for hypothetical future events.
- Express uncertainty or emotion regarding past actions using the Perfect Subjunctive.
- Construct counterfactual statements to discuss past regrets and missed opportunities.
学べること
Hey there, future Portuguese master! Ready to unlock a new level of fluency? This chapter is your key to sounding natural and precise when discussing what *could* be and what *might have been*.
First, conquer the Future Subjunctive. Portuguese has an elegant structure for hypothetical future situations, unlike English's if or when. You'll master confidently planning a trip
if the weather is goodor promising something
when I finish work.Navigate future possibilities with confidence! Next, explore the past with emotion. The Perfect Subjunctive (
tenha feito) empowers you to express doubts, desires, or feelings about completed actions. Imagine saying, I doubt she *has finished* her homeworkor
I wish I *had seen* that movie.This adds incredible depth to your conversations. Finally, confront past regrets using the classic
If I had known...construction:
Se tivesse... teria.... This powerful structure lets you articulate what ifs and if onlys, like If I had studied more, I would have passed the exam.Express counterfactuals with native-like ease. By the end, you won't just *recognize* these rules; you'll *wield* them naturally. Speak with sophistication, confidently making complex plans and expressing deep emotions effortlessly. Get ready to truly fine-tune your Portuguese and sound like a B2 pro!
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接続法未来をマスターする：「もし〜なら」「いつ〜する時」の文法英語では 'when' や 'if' の後は現在形を使いますが、ポルトガル語では「未来接続法」という専用の形を使います。キーワードは
quandoやse、そしてassim queです。 -
接続法過去完了：過去への疑い (Tenha feito)過去に終わったことについて、疑いや希望、感情を込めて話すなら
tenha+ «過去分詞» のセットを使いましょう。 -
過去の後悔：もし知っていたら... (Se tivesse... teria...)条件の部分には
tivesse+ 過去分詞、結果の部分にはteria+ 過去分詞を使います。会話ではtinhaも大活躍しますよ！
Learning Objectives
By the end of this chapter, you will be able to:
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1
By the end you will be able to: Use the future subjunctive to plan events with 'when' or 'if' clauses.
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2
By the end you will be able to: Express doubt about past events using the perfect subjunctive.
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3
By the end you will be able to: Analyze and form complex 'If I had...' regrets.
チャプターガイド
Overview
If I had known...construction for past regrets. Unlike English, Portuguese grammar often uses specific tenses to convey conditions and uncertainties, particularly in the subjunctive mood. By the end of this chapter, you won't just *recognize* these rules; you'll *wield* them naturally.
How This Grammar Works
This elegant structure is used to express actions that *might* happen in the future, especially after conjunctions like quando (when), se (if), assim que (as soon as), or enquanto (while). For example,Quando eu chegar, eu te ligo" (When I arrive, I'll call you) or
Se ele vier, avise-me(If he comes, let me know).
if or when clause, but Portuguese requires the subjunctive to indicate future uncertainty.Doubting the Past (Tenha feito).This tense, formed with the subjunctive of ter or haver plus the past participle (e.g., tenha feito, tenha viajado), allows you to express doubts, desires, or feelings about actions that *have already happened*. It's perfect for statements like
Espero que ele tenha terminado o trabalho(I hope he has finished the work) or
É possível que ela tenha viajado(It's possible she has traveled). This adds incredible depth to your conversations, letting you reflect on completed actions with emotional nuance.
if clause and the conditional perfect (teria) in the main clause, is essential for articulating what ifs and if onlys. Imagine saying, Se eu tivesse estudado mais, eu teria passado no exame(If I had studied more, I would have passed the exam) or
Se ele tivesse chegado a tempo, ele teria visto o show(If he had arrived on time, he would have seen the show). This construction is a hallmark of advanced Portuguese grammar B2 usage, allowing you to express complex hypothetical past scenarios with ease.
Common Mistakes
- 1✗ Wrong:
Quando eu chego, eu te ligo.
Quando eu chegar, eu te ligo.(When I arrive, I'll call you.)
when for future actions, but Portuguese requires the Future Subjunctive for actions that haven't happened yet. Using the indicative (chego) implies a habitual action or a present fact, not a future condition.- 1✗ Wrong:
Eu duvido que ela terminou o projeto.
Eu duvido que ela tenha terminado o projeto.(I doubt she has finished the project.)
- 1✗ Wrong:
Se eu sabia, eu teria te ajudado.
Se eu tivesse sabido, eu teria te ajudado.(If I had known, I would have helped you.)
if clauses about the past, Portuguese uses the Imperfect Subjunctive (tivesse sabido), not the simple past indicative (sabia). The main clause then uses the Conditional Perfect (teria ajudado). This structure is key for expressing past regrets or hypothetical past situations.
Real Conversations
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Quick FAQ
How do I know when to use the Future Subjunctive in Portuguese?
You use the Future Subjunctive after conjunctions like quando, se, assim que, or enquanto when referring to an action that is uncertain or hasn't happened yet in the future.
What's the main difference between the Perfect Subjunctive and the Past Indicative in Portuguese?
The Perfect Subjunctive expresses doubt, emotion, or possibility about a completed past action, while the Past Indicative states a past action as a fact.
Can I use Se eu soubesse... instead of
Se eu tivesse sabido...for past regrets?
While Se eu soubesse (If I knew/If I were to know) is used for present or future hypotheticals, for true past regrets or counterfactuals,
Se eu tivesse sabido(If I had known) is the correct and most common form paired with the conditional perfect.
Cultural Context
重要な例文 (6)
Se eu tivesse estudado mais, eu teria passado no teste.
もっと勉強していたら、テストに合格していただろうに。
過去の後悔：もし知っていたら... (Se tivesse... teria...)Se a internet não tivesse caído, eu tinha ganhado a partida!
ネットが落ちてなかったら、試合に勝ててたのに！
過去の後悔：もし知っていたら... (Se tivesse... teria...)ヒントとコツ (3)
Ver（見る）と Vir（来る）の混同に注意！
Se você vir ele...」と言いたい時に 'ver' と言わないようにしましょう。
「Já」を挟む位置のコツ
Que ele tenha JÁ saído.
会話で使える 'Tinha' の近道
Se eu tivesse visto, eu tinha falado.
重要な語彙 (5)
Real-World Preview
Planning the Future
Review Summary
- Quando/Se + future subjunctive verb
- Duvido que + tenha + past participle
- Se + past perfect subjunctive + conditional
よくある間違い
You cannot use the conditional in the 'if' clause. Always use the past perfect subjunctive.
Use the future subjunctive after 'quando' for future events, not the present indicative.
Doubt requires the subjunctive mood. Use the perfect subjunctive for past actions.
このチャプターのルール (3)
Next Steps
You have done an amazing job! Keep practicing these structures and watch your fluency soar.
Write a journal entry about a past regret.
クイック練習 (9)
Se eu ___ (ter) sabido da festa, eu teria ido.
frontend.learn_grammar.from_rule: 過去の後悔：もし知っていたら... (Se tivesse... teria...)
Assim que eu saber a resposta, te aviso.
frontend.learn_grammar.from_rule: 接続法未来をマスターする：「もし〜なら」「いつ〜する時」の文法
Não acredito que você tenha fazido isso.
frontend.learn_grammar.from_rule: 接続法過去完了：過去への疑い (Tenha feito)
Eu duvido que ele ___ (comprar) o ingresso.
frontend.learn_grammar.from_rule: 接続法過去完了：過去への疑い (Tenha feito)
正しい選択肢を選んでください：
frontend.learn_grammar.from_rule: 接続法過去完了：過去への疑い (Tenha feito)
Quando eu ___ (ter) dinheiro, vou comprar um carro.
frontend.learn_grammar.from_rule: 接続法未来をマスターする：「もし〜なら」「いつ〜する時」の文法
どの翻訳が文法的に正しいですか？
frontend.learn_grammar.from_rule: 過去の後悔：もし知っていたら... (Se tivesse... teria...)
Find and fix the mistake:
Se você tivesse ligado, eu tinha atendida.
frontend.learn_grammar.from_rule: 過去の後悔：もし知っていたら... (Se tivesse... teria...)
どちらの文が正しいですか？
frontend.learn_grammar.from_rule: 接続法未来をマスターする：「もし〜なら」「いつ〜する時」の文法
Score: /9
よくある質問 (6)
Quando eu tiver tempo amanhã」のように未来の特定の時を指すなら、必ず未来接続法を使ってください。
Se nós formos...」はどこでも通じます。
Espero que tenha funcionado.
Espero que você tenha visto.
Se eu tiver dinheiro, eu irei...
Se eu tinha は「私が持っていた時」という事実を指します。仮定なら Se eu tivesse を使いましょう。
