A1 Nouns & Articles 16 min read 简单

葡萄牙语缩合词:介词 + 冠词 (do, na, ao)

Always merge prepositions with definite articles to sound natural and follow mandatory Portuguese grammar rules.

Grammar Rule in 30 Seconds

In Portuguese, prepositions like 'de' and 'em' merge with articles like 'o' or 'a' to form single, fluid words.

  • De + o = do (of the, masculine). Example: O carro do João.
  • Em + a = na (in the, feminine). Example: Estou na escola.
  • A + o = ao (to the, masculine). Example: Vou ao cinema.
Preposition (de/em/a) + Article (o/a/os/as) = 🔗 Merged Word

Overview

### Overview
你好!欢迎来到葡萄牙语的学习世界。作为一名母语为中文的老师,我非常理解你在学习葡萄牙语时遇到的挑战。今天我们要聊的是葡萄牙语中一个非常核心且有趣的现象:介词与冠词的合体(Contractions)。在葡萄牙语中,当你想要表达“在...里”、“从...来”或者“去...地方”时,介词(如 de, em, a)和定冠词(如 o, a, os, as)不能像在英语或中文里那样分开写,而是必须“合体”变成一个新词。这在葡萄牙语语法中是强制性的,不是一种随意的缩写,而是语言构成的基本规则。
在中文里,我们表达方位或归属非常简单,通常就是“介词 + 名词”,比如“在桌子上”、“从巴西来”。中文语法里没有“冠词”这个概念,所以我们习惯了名词直接跟在介词后面。但在葡萄牙语中,名词前面几乎总是带着定冠词(相当于中文里的“那”、“这”或者特定指代)。当你把介词和这些冠词放在一起时,为了发音流利和省力,葡萄牙语就产生了一种“语音经济”现象。这就像中文里的连读或语流音变,只不过在葡语里它是写在纸上的硬性规定。如果你不进行合体,句子读起来会非常生硬,甚至会被认为语法错误。所以,掌握这个规则是你从“初学者”迈向“流利沟通”的第一步,它其实比你想象的要简单得多!
### How This Grammar Works
葡萄牙语的合体规则其实很有逻辑。简单来说,就是“介词 + 定冠词 = 新词”。我们需要关注的介词主要是 de(表示所属或来源)、em(表示位置或状态)、a(表示方向或目的地)以及 por(表示经过或方式)。
你可以把这看作是葡萄牙语的一种“拼图游戏”。当介词遇到冠词时,它们会发生融合。比如 de(的/从)加上 o(阳性定冠词),就会变成 do。这在中文里没有直接的对应结构,因为中文没有冠词。你可以把 do 理解为一个整体,它的意思就是“的 + 那(阳性)”。
这种机制是为了让语言听起来更连贯。想象一下,如果你在咖啡厅点餐,说“这是那个杯子的盖子”,葡语里“杯子的”就是 do copo。如果你说成 de o copo,就像是中文里说话一顿一顿的,非常不自然。这种合体不仅改变了拼写,还必须遵循“性数一致”的原则。也就是说,如果后面的名词是阳性单数,合体词就必须是阳性单数;如果是阴性复数,合体词也必须相应变化。这种对名词属性的严格要求,是葡语语法的重中之重,也是我们要重点练习的地方。
### Formation Pattern
为了让你更清晰地记忆,我整理了下面的表格。记住,这就像是数学公式,把介词和冠词代入进去即可。
| 介词 | 冠词 | 合体结果 | 例子 | 中文含义 |
|---|---|---|---|---|
| de | o | do | O livro do aluno | 学生的书 |
| de | a | da | A casa da Maria | 玛丽亚的家 |
| em | o | no | Estou no carro | 我在车里 |
| em | a | na | Moro na China | 我住在(在)中国 |
| a | o | ao | Vou ao cinema | 我去电影院 |
| a | a | à | Vou à escola | 我去学校 |
对于 por 这个介词,它的变化稍微复杂一点:por + o = pelopor + a = pela。这在表达“穿过”或者“通过”时非常常用。例如:Passo pelo parque(我经过公园)。
### When To Use It
这些合体词在日常生活中无处不在。当你出门坐地铁、点外卖或者在大学校园里交流时,你每时每刻都在使用它们。
  1. 1表示所属:当你想要说“这是我的书”或者“这是老师的电脑”时。葡语习惯用 de 表示所属。比如 O computador do professor(老师的电脑)。
  2. 2表示位置:当你告诉朋友你在哪里。比如 Estou na faculdade(我在大学里)。注意这里 naem + a 的合体。
  3. 3表示方向:当你告诉司机你要去哪里。比如 Vou ao centro(我去市中心)。
  4. 4表示时间:比如 às oito horas(在八点钟)。
这些场景在中文里我们往往只需要一个“在”或者直接省略,但在葡语里,必须根据名词的阴阳性来选择对应的合体词。这不仅是语法,更是葡语思维的一部分。一旦你习惯了,你会发现这种结构能让你的表达非常精准。
### Common Mistakes
作为中文母语者,我们在学习过程中最容易出现以下三个错误,这是因为中文语法中缺乏冠词系统,导致我们容易产生“母语干扰”:
  1. 1漏掉合体(拆分错误):很多同学习惯直接写 de oem a。这在葡语里是绝对错误的。原因是我们的大脑习惯了中文的“介词 + 名词”结构。记住,只要看到 de 后面接了特定的名词,就要立刻反射性地把它变成 do/da
  1. 1性数不匹配:比如名词是 mesa(桌子,阴性),却用了 no(阳性合体词)。这通常是因为我们对名词的阴阳性不够敏感。在中文里,我们没有阴阳性,所以我们很难意识到 mesa 需要配 na 而不是 no。解决办法是:背单词时,一定要连同冠词一起背,比如 a mesa,这样你就不会搞错。
  1. 1滥用 à (Crase):很多同学看到 a 就想加那个小撇(重音符)。其实 à 只有在介词 a 遇到阴性定冠词 a 时才出现。如果后面接的是阳性名词或者动词,千万不要加这个符号。
### Contrast With Similar Patterns
为了让你更清楚,我们对比一下中文和葡语的结构差异:
| 语法功能 | 中文结构 | 葡语结构 (合体) | 例子 |
|---|---|---|---|
| 所属 | 名词A + 的 + 名词B | 名词B + do/da + 名词A | A chave da porta (门钥匙) |
| 位置 | 在 + 名词 | no/na + 名词 | No restaurante (在餐厅) |
| 目的地 | 去 + 名词 | ao/à + 名词 | Vou à biblioteca (去图书馆) |
通过对比可以看到,葡语的合体词其实充当了中文里“的”、“在”、“到”等词的功能,但它还额外包含了名词的“性”和“数”信息。这看起来复杂,但其实它让句子结构更紧凑。
### Quick FAQ
  1. 1问:是不是所有的 deem 都要合体?
答:基本是的。当后面接定冠词时,它们必须合体。但如果后面接的是专有名词(如人名)或者不定冠词,情况会不同。初学者先记住:遇到定冠词 o/a 就合体。
  1. 1问:如果不合体,葡萄牙人能听懂吗?
答:能听懂,但会觉得你说话非常奇怪,就像外国人说中文说“我 在 那 教室”一样不自然。为了地道,请务必练习合体。
  1. 1问:à 那个符号怎么打出来?
答:在电脑键盘上,它通常在回车键附近。在手机上,长按 a 键就会弹出带有重音符的选项。这是一个非常重要的标记,一定要写出来哦!
加油!这只是葡语学习的一小步,只要多读、多听,你会发现这些合体词很快就会成为你表达的一部分!

Preposition + Article Contractions

Preposition o (masc) a (fem) os (masc pl) as (fem pl)
De
do
da
dos
das
Em
no
na
nos
nas
A
ao
à
aos
às

Meanings

These contractions occur when a preposition meets a definite article, creating a single, mandatory word for better flow.

1

Possession (De + Article)

Indicates belonging or origin.

“O livro do professor.”

“A chave da porta.”

2

Location (Em + Article)

Indicates being inside or at a place.

“Estou no restaurante.”

“Ela está na praia.”

3

Direction (A + Article)

Indicates movement toward a destination.

“Vou ao médico.”

“Vamos à festa.”

Reference Table

Reference table for 葡萄牙语缩合词:介词 + 冠词 (do, na, ao)
Form Structure Example
Affirmative
De + o
O gato do vizinho.
Affirmative
Em + a
Ela está na sala.
Affirmative
A + o
Vou ao banco.
Negative
De + os
Não gosto dos filmes.
Question
Em + o
Você está no trabalho?
Question
A + a
Vamos à festa?
Short Answer
De + a
É da Maria.
Short Answer
Em + as
Estão nas caixas.

正式程度

正式
Estou na residência.

Estou na residência. (Location)

中性
Estou na casa.

Estou na casa. (Location)

非正式
Tô na casa.

Tô na casa. (Location)

俚语
Tô na casa.

Tô na casa. (Location)

The Contraction Web

Preposition

Masculine

  • do of the
  • no in the

Feminine

  • da of the
  • na in the

按水平分级的例句

1

O livro do aluno.

The student's book.

2

Estou na escola.

I am at the school.

3

Vou ao mercado.

I am going to the market.

4

A chave da casa.

The house key.

1

Eles moram no Brasil.

They live in Brazil.

2

O carro dos meus pais.

My parents' car.

3

Vamos à praia hoje.

We are going to the beach today.

4

As cores das flores.

The colors of the flowers.

1

Ele chegou ao aeroporto cedo.

He arrived at the airport early.

2

Estou nas nuvens de felicidade.

I am on cloud nine with happiness.

3

O resultado do exame saiu.

The exam result came out.

4

Ela trabalha na empresa de tecnologia.

She works at the technology company.

1

A solução do problema reside na paciência.

The solution to the problem lies in patience.

2

Ele foi ao encontro dos amigos.

He went to meet his friends.

3

As decisões das autoridades foram criticadas.

The authorities' decisions were criticized.

4

Estamos no meio de uma crise.

We are in the middle of a crisis.

1

A essência do ser humano encontra-se na liberdade.

The essence of the human being is found in freedom.

2

Ele referiu-se às mudanças climáticas.

He referred to climate change.

3

O impacto das políticas públicas é visível.

The impact of public policies is visible.

4

Chegamos ao ápice da discussão.

We reached the peak of the discussion.

1

A transição do modelo clássico ao moderno.

The transition from the classical model to the modern one.

2

Às vezes, a beleza reside na simplicidade.

Sometimes, beauty lies in simplicity.

3

O desfecho da narrativa surpreendeu a todos.

The narrative's outcome surprised everyone.

4

Na medida em que o tempo passa, entendemos.

As time passes, we understand.

容易混淆

Portuguese Word Mergers: Prepositions + Articles (do, na, ao) 对比 No vs. O

Learners often use 'o' when they need 'no'.

Portuguese Word Mergers: Prepositions + Articles (do, na, ao) 对比 Do vs. De

Learners use 'de' when they need 'do'.

Portuguese Word Mergers: Prepositions + Articles (do, na, ao) 对比 Ao vs. À

Learners forget the grave accent on feminine words.

常见错误

de o

do

Always merge de + o.

em a

na

Always merge em + a.

a o

ao

Always merge a + o.

a a

à

Must use grave accent.

de os

dos

Plural needs to be merged too.

em os

nos

Plural needs to be merged.

a as

às

Plural needs grave accent.

de a

da

Feminine singular must be merged.

em o

no

Masculine singular must be merged.

a o

ao

Masculine singular must be merged.

de a

da

Even in complex sentences, merge.

em a

na

Even in complex sentences, merge.

a a

à

Even in complex sentences, merge.

de o

do

Even in complex sentences, merge.

句型

Eu estou ___ ___.

Este é o livro ___ ___.

Eu vou ___ ___.

A cor ___ ___ é azul.

Real World Usage

Texting constant

Tô no café.

Job Interview very common

Falei do projeto.

Travel very common

Vou ao aeroporto.

Food Delivery common

O pedido do cliente.

Social Media constant

Na praia com eles!

Academic Writing common

A análise dos dados.

💡

Listen for the rhythm

Native speakers don't pause between the preposition and the article. Listen for the flow.
⚠️

Don't skip the accent

The grave accent (à) is not just decoration. It tells the reader it's a contraction.
🎯

Practice in pairs

Practice saying 'do' and 'da' together to get the rhythm right.
💬

Regional variation

In some Brazilian regions, 'no' is used for 'to'. Be aware of this when traveling.

Smart Tips

Think 'do' or 'da' immediately.

O livro de o aluno. O livro do aluno.

Think 'no' or 'na' immediately.

Estou em a casa. Estou na casa.

Think 'ao' or 'à' immediately.

Vou a o cinema. Vou ao cinema.

Check if you need the grave accent (à).

Vou a a praia. Vou à praia.

发音

do (doh)

Vowel merging

The merged words are pronounced as a single unit, often with a slightly longer vowel sound.

Statement

Estou na casa. ↘

Falling intonation at the end.

记住它

记忆技巧

Remember the 'Glue Rule': Prepositions and articles are like magnets; they snap together instantly.

视觉联想

Imagine a tiny magnet on the word 'de' and another on 'o'. When they get close, they click together to form 'do'.

Rhyme

When 'de' meets 'o', it becomes 'do', it's the easiest rule for you!

Story

Maria is walking. She wants to go to the park. She says 'Vou ao parque'. Then she sees her friend's dog. She says 'É o cachorro do meu amigo'. Finally, she goes home and says 'Estou na minha casa'.

Word Web

dodanonaaoàdosnas

挑战

For the next 5 minutes, label 5 objects in your room using 'do' or 'da' (e.g., 'a porta da sala').

文化笔记

In Brazil, 'no' and 'na' are often used for 'to' in informal speech, though 'ao' is technically correct.

In Portugal, the distinction between 'ao' (to) and 'no' (in) is strictly maintained.

Usage is similar to Portugal, with a focus on clear, formal contractions.

These contractions evolved from Latin, where prepositions and articles were often fused in speech.

对话开场白

Onde você está?

De quem é este livro?

Para onde você vai?

Qual é a cor da sua casa?

日记主题

Describe your room using 'no' and 'na'.
Write about your family members and their belongings using 'do' and 'da'.
Describe your daily commute to work or school using 'ao' and 'à'.
Write a short story about a trip to a city using all types of contractions.

常见错误

Incorrect

正确


Incorrect

正确


Incorrect

正确


Incorrect

正确

Test Yourself

Fill in the blank: Eu moro ___ Brasil.

no

✓ Correct! ✗ Not quite. Correct answer: no
Em + o = no.
Which is correct? 多项选择

O carro ___ João.

✓ Correct! ✗ Not quite. Correct answer: do
De + o = do.
Fix the error: Vou a a praia. Error Correction

Find and fix the mistake:

Vou à praia.

✓ Correct! ✗ Not quite. Correct answer: Vou à praia
A + a = à.
Build a sentence: (Vou / ao / mercado). Sentence Building

Vou ao mercado.

✓ Correct! ✗ Not quite. Correct answer: Vou ao mercado
A + o = ao.
Match the contraction to its components. Match Pairs

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

✓ Correct! ✗ Not quite. Correct answer: de + o
De + o = do.
Fill in the blank: Ela está ___ sala.

na

✓ Correct! ✗ Not quite. Correct answer: na
Em + a = na.
Which is correct? 多项选择

As chaves ___ casa.

✓ Correct! ✗ Not quite. Correct answer: da
De + a = da.
Fix the error: O livro de os alunos. Error Correction

Find and fix the mistake:

O livro dos alunos.

✓ Correct! ✗ Not quite. Correct answer: O livro dos alunos
De + os = dos.

Score: /8

练习题

8 exercises
Fill in the blank: Eu moro ___ Brasil.

no

✓ Correct! ✗ Not quite. Correct answer: no
Em + o = no.
Which is correct? 多项选择

O carro ___ João.

✓ Correct! ✗ Not quite. Correct answer: do
De + o = do.
Fix the error: Vou a a praia. Error Correction

Find and fix the mistake:

Vou à praia.

✓ Correct! ✗ Not quite. Correct answer: Vou à praia
A + a = à.
Build a sentence: (Vou / ao / mercado). Sentence Building

Vou ao mercado.

✓ Correct! ✗ Not quite. Correct answer: Vou ao mercado
A + o = ao.
Match the contraction to its components. Match Pairs

do

✓ Correct! ✗ Not quite. Correct answer: de + o
De + o = do.
Fill in the blank: Ela está ___ sala.

na

✓ Correct! ✗ Not quite. Correct answer: na
Em + a = na.
Which is correct? 多项选择

As chaves ___ casa.

✓ Correct! ✗ Not quite. Correct answer: da
De + a = da.
Fix the error: O livro de os alunos. Error Correction

Find and fix the mistake:

O livro dos alunos.

✓ Correct! ✗ Not quite. Correct answer: O livro dos alunos
De + os = dos.

Score: /8

Practice Bank

10 exercises
Fill in the blank with the correct contraction. 填空

O gato está ___ (em + a) mesa.

✓ Correct! ✗ Not quite. Correct answer: na
Translate 'From the airport' into Portuguese. 翻译

Translate: From the airport

✓ Correct! ✗ Not quite. Correct answer: Do aeroporto
Choose the correct plural contraction. 多项选择

Eles moram ___ (em + os) Estados Unidos.

✓ Correct! ✗ Not quite. Correct answer: nos
Fix the sentence: 'Eu gosto de as flores.' Error Correction

Eu gosto de as flores.

✓ Correct! ✗ Not quite. Correct answer: Eu gosto das flores.
Reorder the words to say 'I am at the party'. Sentence Reorder

festa / na / estou / Eu

✓ Correct! ✗ Not quite. Correct answer: Eu estou na festa
Match the components to their contraction. Match Pairs

Match the following:

✓ Correct! ✗ Not quite. Correct answer:
Fill in the blank for movement. 填空

Ela vai ___ (a + a) escola.

✓ Correct! ✗ Not quite. Correct answer: à
Which contraction is used for 'by the'? 多项选择

Nós passamos ___ (por + a) rua principal.

✓ Correct! ✗ Not quite. Correct answer: pela
Correct this text message: 'Onde está o controle de o TV?' Error Correction

Onde está o controle de o TV?

✓ Correct! ✗ Not quite. Correct answer: Onde está o controle da TV?
Translate 'In the cars' into Portuguese. 翻译

Translate: In the cars

✓ Correct! ✗ Not quite. Correct answer: Nos carros

Score: /10

常见问题 (8)

To make speech faster and more fluid. It avoids the 'hiatus' between vowels.

Yes, they are standard in all forms of Portuguese.

You will sound like a beginner or someone reading very slowly.

No, 'à' is a contraction of 'a + a'.

No, they just change the form of the words.

Yes, they are required in formal writing.

Very few, mostly in specific proper names.

Use them in daily sentences and label objects in your house.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish high

del, al

Portuguese contracts 'em' (in), while Spanish does not.

French high

du, au

French uses different forms for plural contractions (des, aux).

German moderate

im, am

German contractions are based on cases, not just articles.

Japanese none

particles

Japanese is agglutinative but does not merge prepositions and articles.

Arabic low

prefixes

Arabic uses prefixes, not contractions of separate words.

Chinese none

none

Chinese has no articles and no contractions of this type.

Learning Path

Prerequisites

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