B2 Future & Conditional 20 min read 中等

猜测过去：使用条件式表达可能性 (Futuro do Pretérito)

Use the conditional tense (Futuro do Pretérito) to make guesses, express doubt, or state unverified facts about the past.
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Grammar Rule in 30 Seconds

Use the conditional tense to express uncertainty or make an educated guess about the past.

  • Use it for past events you aren't sure about: 'Seria ele o culpado?' (Could he be the culprit?)
  • It replaces the simple past when guessing: 'Onde estaria a chave?' (Where could the key be?)
  • It works with verbs of state and action: 'Eles estariam viajando.' (They were probably traveling.)
Subject + Conditional Verb + (Object/Adverb)

Overview

周日早上醒来。你的手机有14个好朋友的未接来电，都是凌晨3点打来的。你的第一反应不是一个既定事实，而是一个疯狂的猜测。“她遇到麻烦了吗？”在英语中，你可能会用“must have been”这样的情态短语。而葡萄牙语处理起来要优雅得多，它直接使用条件式（Conditional）。
是的，就是你平时在咖啡馆礼貌点单时用的那个时态（Eu gostaria de um café），它有着戏剧性的双重身份。它就像一台语法时光机，用来表达过去的谣言、猜测和可能性。

How This Grammar Works

要理解这个概念，请暂时忘记条件式的英语直译“would”。葡萄牙语将条件式扩展应用到对过去充满不确定性的回顾中。当你用条件式谈论过去时，你其实是在说：“根据我所知，这是我最好的猜测。”
如果你在看Netflix上的真实犯罪纪录片，旁白说 O suspeito estaria na casa。这在语境中的实际意思是“据称嫌疑人当时在房子里”。旁白用条件式来避免把猜测说成确凿的法律事实。这在新闻报道中非常普遍。

Formation Pattern

1
简单条件式（用于状态、描述和时间）
2
在动词原形后加上条件式词尾：-ia, -ias, -ia, -íamos, -iam。
3
ser -> seria（大概是）
4
estar -> estaria（大概是）
5
复合条件式（用于已完成的动作）
6
如果猜测别人做过的动作，使用 ter 的条件式（teria）加上主要动词的过去分词。
7
teria feito（可能做了）
8
提问
9
把动词放在句首或疑问词后。Quem seria?（我想知道那是谁？）。

When To Use It

  • 猜测过去的时间：Seriam umas duas da manhã（大概是凌晨两点吧）。
  • 自言自语地疑惑：Quem bateria na porta?（谁会敲门呢？）。
  • 传播八卦或未经证实的消息：Ele teria roubado dinheiro（据称他偷了钱）。

Common Mistakes

最大的陷阱是太依赖英语直译。英语母语者喜欢用“must”表示推测，所以容易造出 deve ter estado 这样的句子。虽然语法没错，但不太自然。地道的表达直接用 estaria。此外，别把未完成过去时（estava - 事实）和条件式（estaria - 猜测）混淆。

Contrast With Similar Patterns

在随意的巴西口语中，人们非常喜欢用 Será que。
条件式模式：Ele teria esquecido?
Será que模式：Será que ele esqueceu?
两者意思完全一样，但 Será que 更口语化，而条件式稍微有点新闻感。

Quick FAQ

问：人们平时真的这么说话吗？
答：当然！尤其是用来猜测时间时（Seriam 5 horas）。
问：可以用来猜测现在吗？
答：不行，猜测现在要用将来时（estará）。条件式专门用来回顾过去。

Conditional Conjugation (Regular)

Person Falar Comer Partir
Eu
falaria
comeria
partiria
Tu
falarias
comerias
partirias
Ele/Ela
falaria
comeria
partiria
Nós
falaríamos
comeríamos
partiríamos
Vós
falaríeis
comeríeis
partiríeis
Eles/Elas
falariam
comeriam
partiriam

Meanings

The conditional of probability is used to express conjecture, doubt, or an educated guess regarding a past situation.

1

Past Conjecture

Guessing about an event that happened in the past.

“Quem teria feito isso?”

“Eles estariam em casa quando liguei?”

Reference Table

Reference table for 猜测过去：使用条件式表达可能性 (Futuro do Pretérito)
Form Structure Example
Affirmative
Verb + -ia
Ele estaria lá.
Negative
Não + Verb + -ia
Ele não estaria lá.
Question
Verb + -ia + Subject?
Estaria ele lá?
Compound
Teria + Participle
Ele teria ido.
Negative Compound
Não + Teria + Participle
Ele não teria ido.

正式程度

正式
Quem teria subtraído o bolo?

Quem teria subtraído o bolo? (Mystery/Casual)

中性
Quem teria pegado o bolo?

Quem teria pegado o bolo? (Mystery/Casual)

非正式
Quem será que pegou o bolo?

Quem será que pegou o bolo? (Mystery/Casual)

俚语
Quem teria levado o bolo?

Quem teria levado o bolo? (Mystery/Casual)

Conditional Usage

Conditional

Function

  • Conjecture Guessing

Time

  • Past Past events
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按水平分级的例句

1

Onde estaria o meu livro?

Where could my book be?

1

Quem teria ligado?

Who could have called?

1

Eles estariam viajando quando aconteceu.

They were probably traveling when it happened.

1

O que teria motivado essa decisão?

What could have motivated this decision?

1

Teria sido um erro de cálculo, segundo os especialistas.

It might have been a calculation error, according to experts.

1

Quem ousaria duvidar do que teria ocorrido naquela noite?

Who would dare doubt what might have happened that night?

容易混淆

Guessing the Past: Using the Conditional for Probability 对比 Future of the Past vs. Conditional of Probability

They share the same form.

Guessing the Past: Using the Conditional for Probability 对比 Conditional vs. Imperfect Indicative

Both refer to the past.

Guessing the Past: Using the Conditional for Probability 对比 Conditional vs. Subjunctive

Both express doubt.

常见错误

✗

Onde estava ele?

✓

Onde estaria ele?

Using indicative for a guess.
✗

Ele foi em casa.

✓

Ele teria ido em casa.

Missing the conditional aspect.
✗

Quem fez isso?

✓

Quem teria feito isso?

Direct question vs guess.
✗

Ele estaria lá ontem.

✓

Ele teria estado lá ontem.

Wrong tense for past.
✗

Eu pensava que ele estaria lá.

✓

Eu pensava que ele estaria lá (this is fine, but context matters).

Confusing future of the past with probability.
✗

Ele teria comer.

✓

Ele teria comido.

Infinitive instead of participle.
✗

Teria sido ele?

✓

Teria sido ele?

Actually correct, but often avoided.
✗

Eles estariam ido.

✓

Eles teriam ido.

Wrong auxiliary verb.
✗

O que teria acontecido?

✓

O que teria acontecido?

Correct, but often misused in sequence of tenses.
✗

Se ele teria vindo...

✓

Se ele tivesse vindo...

Conditional in 'if' clause.
✗

Ele teria feito isso, eu acho.

✓

Ele teria feito isso.

Redundancy.
✗

Eles estariam tendo feito.

✓

Eles teriam feito.

Over-complicating.

句型

Quem teria ___?

Onde estaria ___?

Eles teriam ___ quando ___.

O que teria motivado ___?

Real World Usage

Texting very common

Onde estaria você?

Journalism common

O suspeito teria fugido.

Job Interview occasional

O que teria feito diferente?

Social Media common

Quem teria postado isso?

Travel occasional

Onde teria ficado o hotel?

Food Delivery occasional

Onde teria parado o entregador?

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💡

Use for guessing

Whenever you are unsure about a past fact, use the conditional.
⚠️

Not for 'if'

Do not use the conditional in the 'if' clause.
🎯

Compound form

Use 'teria' + participle for past actions.
💬

Regional variation

In Brazil, 'será que' is a great alternative.

Smart Tips

Use the compound conditional (teria + participle).

Ele foi lá. → Ele teria ido lá.

Use the conditional instead of the past tense.

Onde foi ele? → Onde teria ido ele?

Use 'será que' if you forget the conditional.

Onde estaria ele? → Onde será que ele está?

Use the conditional to report unverified news.

O governo aumentou os impostos. → O governo teria aumentado os impostos.

发音

fa-la-RI-a

Stress

The stress is always on the 'i' in the conditional ending.

Rising

Estaria ele em casa? ↑

Indicates a genuine question/doubt.

记住它

记忆技巧

Think of the 'ia' ending as 'I-guess-ia'.

视觉联想

Imagine a detective with a magnifying glass looking at a footprint, saying 'Quem teria passado por aqui?'

Rhyme

Para o passado adivinhar, o -ia você deve usar.

Story

Maria arrives home and finds the door open. She wonders: 'Quem teria entrado? Estaria alguém lá dentro? O que teria levado?'

Word Web

teriaestariaseriafariapoderiadeveria

挑战

Look at 3 objects in your room and guess who touched them last using the conditional.

文化笔记

Brazilians often use 'será que' instead of the conditional for probability in informal speech.

The conditional is used more frequently in formal and written contexts.

Similar to Portugal, formal register prefers the conditional.

Derived from the Latin infinitive + habere (to have).

对话开场白

“

O que teria acontecido se você não tivesse vindo?

“

Quem teria deixado isso aqui?

“

O que teria motivado essa mudança?

“

Onde teriam eles passado as férias?

日记主题

Write about a mystery you once had. Use the conditional to guess what happened.
Imagine a historical event. What would have happened if it went differently?
Describe a lost item. Where could it have gone?
Speculate on why a friend didn't call you back.

常见错误

Incorrect

正确

Incorrect

正确

Incorrect

正确

Incorrect

正确

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Test Yourself

Fill in the blank with the correct conditional form.

Onde ___ (estar) a chave?

✓ Correct! ✗ Not quite. Correct answer: estaria
It's a guess about the past.
Choose the correct sentence. 多项选择

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: Ele teria ido.
Teria + participle.
Correct the sentence. Error Correction

Find and fix the mistake:

Se ele teria vindo, eu saberia.

✓ Correct! ✗ Not quite. Correct answer: Se ele viesse...
No conditional in 'if' clause.
Transform to conditional probability. Sentence Transformation

Onde ele foi? -> Onde ___?

✓ Correct! ✗ Not quite. Correct answer: teria ido ele
Past conjecture.
Is this rule correct? True False Rule

Conditional is only for hypothetical situations.

✓ Correct! ✗ Not quite. Correct answer: False
It's also for probability.
Complete the dialogue. Dialogue Completion

A: Onde está o João? B: Não sei, ___ em casa.

✓ Correct! ✗ Not quite. Correct answer: estaria
Guessing.
Build a sentence. Sentence Building

teria / quem / feito / isso

✓ Correct! ✗ Not quite. Correct answer: Quem teria feito isso?
Correct word order.
Match the meaning. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: Guess / Fact
Conditional is for guessing.

Score: /8

练习题

8 exercises
Fill in the blank with the correct conditional form.

Onde ___ (estar) a chave?

✓ Correct! ✗ Not quite. Correct answer: estaria
It's a guess about the past.
Choose the correct sentence. 多项选择

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: Ele teria ido.
Teria + participle.
Correct the sentence. Error Correction

Find and fix the mistake:

Se ele teria vindo, eu saberia.

✓ Correct! ✗ Not quite. Correct answer: Se ele viesse...
No conditional in 'if' clause.
Transform to conditional probability. Sentence Transformation

Onde ele foi? -> Onde ___?

✓ Correct! ✗ Not quite. Correct answer: teria ido ele
Past conjecture.
Is this rule correct? True False Rule

Conditional is only for hypothetical situations.

✓ Correct! ✗ Not quite. Correct answer: False
It's also for probability.
Complete the dialogue. Dialogue Completion

A: Onde está o João? B: Não sei, ___ em casa.

✓ Correct! ✗ Not quite. Correct answer: estaria
Guessing.
Build a sentence. Sentence Building

teria / quem / feito / isso

✓ Correct! ✗ Not quite. Correct answer: Quem teria feito isso?
Correct word order.
Match the meaning. Match Pairs

Match: Onde estaria? / Onde estava?

✓ Correct! ✗ Not quite. Correct answer: Guess / Fact
Conditional is for guessing.

Score: /8

Practice Bank

12 exercises
Complete the sentence to form an educated guess about the past. 填空

Quem ___ a coragem de fazer uma coisa dessas? (ter)

✓ Correct! ✗ Not quite. Correct answer: teria
Put the words in order to form a journalistic rumor. Sentence Reorder

Reorder the sentence:

✓ Correct! ✗ Not quite. Correct answer: O político teria escondido o dinheiro
Which phrase sounds most natural for guessing a past time? 多项选择

Select the best option:

✓ Correct! ✗ Not quite. Correct answer: Seriam umas duas horas.
Translate the concept of 'must have been' using the conditional. 翻译

They didn't eat anything. They must have been nervous.

✓ Correct! ✗ Not quite. Correct answer: Eles não comeram nada. Eles estariam nervosos.
Find the grammar mistake. Error Correction

Segundo as notícias, o avião tinha caído no mar.

✓ Correct! ✗ Not quite. Correct answer: Segundo as notícias, o avião teria caído no mar.
Complete the assumption. 填空

Você não atendeu o celular. ___ ocupado? (estar)

✓ Correct! ✗ Not quite. Correct answer: Estaria
Match the English intention with the Portuguese grammatical equivalent. Match Pairs

Match the meaning:

✓ Correct! ✗ Not quite. Correct answer: Fact: He was sick - Ele estava doente
Identify the sentence that expresses doubt. 多项选择

Which sentence means 'I wonder who it was?'

✓ Correct! ✗ Not quite. Correct answer: Quem seria?
Build a sentence expressing disbelief. Sentence Reorder

Reorder the words:

✓ Correct! ✗ Not quite. Correct answer: Ela estaria louca para fazer isso?
Make the sentence sound less certain. Error Correction

Onde ela estava ontem? (I wonder where she was yesterday?)

✓ Correct! ✗ Not quite. Correct answer: Onde ela estaria ontem?
Translate the sentence into journalistic Portuguese. 翻译

The company allegedly lost millions.

✓ Correct! ✗ Not quite. Correct answer: A empresa teria perdido milhões.
Choose the correct form to estimate an age. 填空

Era uma criança muito pequena. ___ uns quatro anos. (ter)

✓ Correct! ✗ Not quite. Correct answer: Teria

Score: /12

常见问题 (8)

No, this is specifically for past conjecture.

It's neutral, but can be formal depending on context.

You can! It's just a stylistic choice.

People will understand, but you might sound less precise.

Yes, all verbs can be used in the conditional.

Formally yes, but the function is different.

Just add 'não' before the verb.

Yes, it's very common in questions.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish high

Condicional de probabilidad

None, very similar.

French high

Conditionnel

French uses it more for politeness.

German moderate

Konjunktiv II

German is more complex with modal verbs.

Japanese low

Darou/Deshou

No verb conjugation for this.

Arabic low

Kana + verb

Arabic is non-inflectional for this specific tense.

Chinese low

Keneng

Chinese has no verb conjugation.

Learning Path

Prerequisites

Previous
葡萄牙语条件式：'我会...' 时态 (Futuro do Pretérito)

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