demonstrar 30秒了解
- Demonstrar is a versatile Portuguese verb meaning 'to show' or 'to prove'.
- It is more formal and intentional than the common verb 'mostrar'.
- It is frequently used for emotions, scientific facts, and professional skills.
- It follows regular -ar conjugation patterns, making it easy to learn.
The Portuguese verb demonstrar is a multifaceted gem in the Lusophone linguistic crown. At its core, it signifies the act of making something visible, evident, or undeniable through evidence, logic, or outward expression. Unlike the simpler 'mostrar' (to show), demonstrar often carries a weight of intentionality, proof, or deep-seated emotion. It is the bridge between an internal state and an external reality. When you demonstrar something, you are not merely pointing at it; you are providing the substance that validates its existence. This can range from a scientist demonstrating a theorem to a lover demonstrating affection through small gestures.
- Semantic Depth
- It encompasses logical proof, emotional manifestation, and technical exhibition.
- Grammatical Profile
- A regular -ar verb, usually transitive direct or transitive indirect depending on the prepositional needs of the object.
- Pragmatic Use
- Used in formal debates, academic papers, and intimate personal conversations to emphasize clarity.
"O cientista conseguiu demonstrar a veracidade da sua teoria através de experimentos rigorosos."
In everyday life, demonstrar is frequently paired with abstract nouns. One might demonstrar interesse (show interest), demonstrar preocupação (show concern), or demonstrar coragem (show courage). In these contexts, the verb suggests that the quality is being made manifest through actions rather than just words. It is a verb of action and evidence. If you say someone 'mostrou' fear, they might have just looked scared. If they 'demonstraram' fear, there is a sense that their behavior provided clear evidence of that fear. This nuance is vital for B1 learners moving into more descriptive and analytical Portuguese.
"Ela não costuma demonstrar os seus sentimentos em público."
Furthermore, the verb is essential in the professional world. During a job interview, you don't just 'say' you have skills; you demonstra your competence through your portfolio or your answers. In marketing, a product is demonstrado to potential customers to show its utility. The word shares its Latin roots with 'monstrum' (a divine omen or sign), which eventually gave us 'monster' (something shown/warned about) and 'demonstration'. This historical link highlights the verb's power to make the unseen seen.
- Synonym Nuance
- 'Provar' is more about legal/logical truth; 'Demonstrar' is broader, including emotional display.
"Os dados demonstram uma queda significativa na inflação este mês."
Using demonstrar correctly requires understanding its typical syntactic patterns. Most commonly, it functions as a transitive direct verb, meaning it takes an object directly without a preposition. For example, demonstrar alegria (to show joy). However, it can also be followed by a subordinate clause introduced by que (that), such as demonstrar que a hipótese estava correta (to demonstrate that the hypothesis was correct).
- Structure 1: Verb + Noun
- Demonstrar [emoção/fato/habilidade]. Ex: Demonstrar paciência.
- Structure 2: Verb + Que + Clause
- Demonstrar que [fato]. Ex: Ele demonstrou que sabia a verdade.
When you want to specify to whom something is being demonstrated, you use the preposition a or para. For instance, demonstrar o funcionamento do aparelho aos clientes. In more formal contexts, the indirect object pronoun (me, te, lhe, nos, vos, lhes) is often used: Ele me demonstrou sua lealdade (He demonstrated his loyalty to me).
"É importante demonstrar aos alunos como resolver o problema passo a passo."
In terms of conjugation, demonstrar follows the regular first conjugation (-ar) pattern. This makes it relatively easy for learners. In the present tense: eu demonstro, tu demonstras, ele demonstra, nós demonstramos, vós demonstrais, eles demonstram. In the past (pretérito perfeito): eu demonstrei, você demonstrou, etc. The regularity of the verb allows you to focus more on its contextual application rather than memorizing irregular stems.
One advanced usage involves the reflexive form demonstrar-se, though this is less common than mostrar-se. It means 'to prove oneself to be' or 'to appear to be'. For example, Ele demonstrou-se um aliado fiel (He showed himself to be a faithful ally). However, for B1 learners, sticking to the non-reflexive form to describe externalizing feelings or facts is the safest and most natural path.
You will encounter demonstrar in a variety of settings, each with a slightly different flavor. In Academic and Scientific contexts, it is the standard verb for proving theories or presenting data. A professor might say, "Hoje vamos demonstrar a lei da gravidade," or a research paper might state, "Os resultados demonstram uma correlação positiva." Here, it implies objective, empirical proof.
"O estudo demonstra que o consumo de café pode ser benéfico."
In the Business and Professional world, demonstrar is used during presentations, sales pitches, and performance reviews. You might hear a manager say, "Você precisa demonstrar mais iniciativa," or a salesperson offering to "demonstrar as funcionalidades do software." In these cases, it’s about manifesting value or capability.
- News & Media
- Journalists use it to describe public reactions: 'A população demonstrou indignação'.
- Legal Contexts
- Lawyers 'demonstram' evidence to a jury or judge.
In Daily Social Life, the verb takes on an emotional tone. It is frequently used in discussions about relationships and psychology. A therapist might ask, "Como você demonstra o seu amor?" or a friend might complain, "Ele nunca demonstra o que sente." In this sphere, it is synonymous with 'expressing' or 'externalizing' internal states.
"Os manifestantes demonstraram seu apoio ao novo projeto de lei."
One of the most frequent errors for English speakers is overusing demonstrar when the simpler mostrar would be more natural. While demonstrar is correct, using it to say "Show me your shoes" (Demonstre-me seus sapatos) sounds incredibly stiff and almost robotic. Use mostrar for physical objects and demonstrar for abstract concepts, proofs, or complex behaviors.
- Mistake: Over-formalization
- Using 'demonstrar' for simple visual tasks.
- Mistake: Preposition Confusion
- Using 'com' instead of 'a' when showing something to someone.
Another common pitfall is the confusion between demonstrar and provar. While they are often interchangeable, provar is more final. If you prova something, the debate is usually over; you have established the truth. If you demonstra something, you are in the process of showing it or making it evident. For example, you demonstra interest, but you prova a crime.
"Errado: Ele demonstrou que o vinho era bom (provou/saboreou)."
Learners also struggle with the placement of clitic pronouns with this verb. In European Portuguese, you might hear demonstrar-lhe, while in Brazil, lhe demonstrar or demonstrar para ele is more common. Misplacing these pronouns doesn't change the meaning but can make you sound less fluent. Finally, ensure you don't confuse demonstrar with demover (to dissuade), which sounds vaguely similar but has the opposite intent.
To truly master demonstrar, you must understand its neighbors in the semantic field. The most obvious is mostrar. As discussed, mostrar is the general-purpose verb for 'to show'. It is the 'what' of showing, while demonstrar is often the 'how' or the 'why'.
- Evidenciar
- To make something evident or highlight it. Often used when a fact becomes clear on its own.
- Comprovar
- To verify or confirm. This is stronger than demonstrar; it implies the evidence is conclusive.
- Manifestar
- To express or reveal a feeling or opinion. Very common in political or emotional contexts.
Another close relative is exibir. While demonstrar is about proof or expression, exibir is about display, often with a hint of pride or vanity (showing off). You exibe a trophy, but you demonstra the skill that won it. Then there is revelar (to reveal), which implies uncovering something that was previously hidden or secret.
"A pesquisa evidencia a necessidade de mudanças, enquanto o diretor demonstra como fazê-las."
In technical settings, you might encounter ilustrar (to illustrate). This is used when you provide an example to clarify a point. While demonstrar might involve a full logical proof, ilustrar might just be a helpful story or diagram. Understanding these distinctions allows you to choose the precise word for the situation, a hallmark of B2 and C1 level proficiency.
How Formal Is It?
难度评级
需要掌握的语法
Direct and Indirect Object Pronouns
Subordinate clauses with 'que'
Regular -ar verb conjugation
Prepositional usage with verbs of communication
Reflexive verbs
按水平分级的例句
Eu demonstro a foto.
I show the photo.
Simple present tense.
Ela demonstra alegria.
She shows joy.
Subject + Verb + Noun.
Nós demonstramos o livro.
We show the book.
First person plural.
Você demonstra o caminho?
Do you show the way?
Question form.
Eles demonstram o jogo.
They show the game.
Third person plural.
O menino demonstra o desenho.
The boy shows the drawing.
Noun as subject.
Eu demonstro amor.
I show love.
Abstract noun.
Ela demonstra a casa.
She shows the house.
Direct object.
Ele demonstrou interesse no curso.
He showed interest in the course.
Pretérito Perfeito (Past).
Nós demonstramos como usar o app.
We showed how to use the app.
Infinitive 'usar' after 'como'.
Você precisa demonstrar calma.
You need to show calmness.
Modal verb 'precisar' + infinitive.
Eles demonstraram muita coragem.
They showed a lot of courage.
Past tense plural.
Ela sempre demonstra afeto.
She always shows affection.
Adverb 'sempre' position.
O guia demonstrou o mapa aos turistas.
The guide showed the map to the tourists.
Indirect object with 'aos'.
Eu quero demonstrar meu talento.
I want to show my talent.
Verb 'querer' + infinitive.
O teste demonstrou o problema.
The test showed the problem.
Abstract subject.
O professor demonstrou que a fórmula funciona.
The teacher demonstrated that the formula works.
Conjunction 'que' introducing a clause.
É importante demonstrar confiança na entrevista.
It's important to show confidence in the interview.
Impersonal expression 'É importante'.
Os dados demonstram uma melhora nas vendas.
The data demonstrate an improvement in sales.
Present tense with plural subject.
Ela demonstrou preocupação com a sua saúde.
She showed concern about your health.
Preposition 'com' after 'preocupação'.
Como podemos demonstrar nossa gratidão?
How can we show our gratitude?
Interrogative 'Como'.
Ele demonstrou ser um ótimo profissional.
He demonstrated being a great professional.
Verb + infinitive 'ser'.
A empresa demonstrou o novo produto ontem.
The company demonstrated the new product yesterday.
Adverb of time 'ontem'.
Não demonstre medo diante do perigo.
Don't show fear in the face of danger.
Negative imperative.
A pesquisa demonstrou a eficácia do novo remédio.
The research demonstrated the efficacy of the new medicine.
Scientific register.
Ele demonstrou-se capaz de liderar a equipe.
He showed himself capable of leading the team.
Reflexive form 'demonstrar-se'.
Os fatos demonstram que ele é inocente.
The facts demonstrate that he is innocent.
Logical proof.
Ela demonstrou uma habilidade incrível para a música.
She demonstrated an incredible skill for music.
Adjective 'incrível' modifying 'habilidade'.
O governo demonstrou falta de planejamento.
The government showed a lack of planning.
Political critique.
Demonstramos nossa insatisfação através de um protesto.
We demonstrated our dissatisfaction through a protest.
Prepositional phrase 'através de'.
O autor demonstra um profundo conhecimento do tema.
The author demonstrates a deep knowledge of the theme.
Literary analysis.
Você deve demonstrar seus argumentos com clareza.
You must demonstrate your arguments with clarity.
Modal 'deve' + infinitive.
A análise demonstrou nuances que ignorávamos.
The analysis demonstrated nuances that we were ignoring.
Pretérito Imperfeito in the relative clause.
Ele demonstrou uma resiliência admirável perante a crise.
He demonstrated an admirable resilience in the face of the crisis.
Sophisticated vocabulary (resiliência).
As evidências demonstram a inviabilidade do projeto.
The evidence demonstrates the unfeasibility of the project.
Formal noun 'inviabilidade'.
O palestrante demonstrou domínio total da plateia.
The speaker demonstrated total command of the audience.
Metaphorical use of 'domínio'.
Demonstrar vulnerabilidade pode ser um sinal de força.
Demonstrating vulnerability can be a sign of strength.
Infinitive as subject.
O relatório demonstra exaustivamente os riscos envolvidos.
The report exhaustively demonstrates the risks involved.
Adverb 'exaustivamente'.
Sua conduta demonstrou um total desrespeito às normas.
His conduct demonstrated a total disregard for the rules.
Noun 'conduta' (conduct).
O experimento demonstrou a validade da hipótese nula.
The experiment demonstrated the validity of the null hypothesis.
Statistical terminology.
A obra demonstra a transitoriedade da existência humana.
The work demonstrates the transience of human existence.
Philosophical register.
Os documentos demonstram cabalmente a má-fé do réu.
The documents fully demonstrate the defendant's bad faith.
Adverb 'cabalmente' (fully/completely).
Ele demonstrou uma erudição que poucos possuem.
He demonstrated an erudition that few possess.
Relative clause with 'que'.
A conjuntura atual demonstra a fragilidade das alianças.
The current situation demonstrates the fragility of alliances.
Political science terminology.
O teorema foi demonstrado por meio de lógica dedutiva.
The theorem was demonstrated by means of deductive logic.
Passive voice.
Suas ações demonstram um desprendimento quase ascético.
His actions demonstrate an almost ascetic detachment.
High-level adjectives.
A história demonstra que o poder é efêmero.
History demonstrates that power is ephemeral.
Abstract philosophical statement.
O autor demonstra a interconectividade dos sistemas globais.
The author demonstrates the interconnectivity of global systems.
Complex noun phrase.
常见搭配
常用短语
容易混淆的词
习语与表达
容易混淆
句型
如何使用
Demonstrar is preferred in writing and formal speech.
It implies a higher level of proof or clarity than 'mostrar'.
- Using 'demonstrar' for physical objects (use 'mostrar').
- Forgetting the nasal sound in the first two syllables.
- Using the wrong preposition (use 'a' or 'para' for people).
- Confusing it with 'demover' (dissuade).
- Overusing it in very casual conversation where 'mostrar' is better.
小贴士
Upgrade your 'mostrar'
Whenever you are writing a formal email or essay, try replacing 'mostrar' with 'demonstrar' to sound more professional.
Nasal Vowels
Practice the 'em' and 'on' sounds in 'demonstrar'. They are nasal, meaning air should come out of your nose.
Showing Affection
In Brazil, 'demonstrar carinho' is very important. Use this verb when talking about how people treat each other.
Theorems
If you are a student, use 'demonstrar' when explaining your logic or steps in a problem.
Interviews
In interviews, say 'Eu gostaria de demonstrar minhas competências' to sound confident.
Adverb Pairing
Pair 'demonstrar' with 'claramente' (clearly) for a strong, persuasive sentence.
News Reports
Listen for this word in news reports about protests ('manifestantes demonstram...').
A que veio
Learn the phrase 'demonstrar a que veio' to describe someone making a strong first impression.
Abstract vs Concrete
Use 'demonstrar' for things you can't touch (feelings, ideas) and 'mostrar' for things you can.
Daily Journaling
Try to write one sentence every day using 'demonstrar' to describe a feeling you had.
记住它
词源
Latin 'demonstrare'
文化背景
It is considered polite to demonstrate gratitude (demonstrar gratidão) clearly after receiving a favor.
In meetings, demonstrating knowledge without being arrogant is a key soft skill in Portugal and Brazil.
在生活中练习
真实语境
对话开场白
"Como você demonstra seu interesse por alguém?"
"Você acha fácil demonstrar seus sentimentos?"
"O que os resultados da empresa demonstram este mês?"
"Como podemos demonstrar que estamos certos?"
"Você pode demonstrar como este software funciona?"
日记主题
Escreva sobre uma vez que você teve que demonstrar coragem.
Como você demonstra gratidão no seu dia a dia?
Descreva um experimento que demonstrou algo importante.
Quais habilidades você gostaria de demonstrar em um novo emprego?
Reflita sobre como a arte demonstra a realidade.
常见问题
10 个问题It is better to use 'mostrar' or 'apresentar' for physical documents. 'Demonstrar' sounds too formal for that.
Yes, it follows the standard -ar conjugation pattern in all tenses.
'Provar' is usually about establishing a definitive truth, while 'demonstrar' is about showing the process or making something evident.
You say 'demonstrar interesse'.
Yes, 'demonstrar-se' means to show oneself to be something, like 'Ele demonstrou-se amigável'.
Both are correct. 'A' is more formal, 'para' is more common in Brazil.
It's an idiom meaning to work hard to show your value or competence.
Yes, it is the standard word for demonstrating a theorem or result.
Yes, it is very common for showing love, hate, joy, etc.
Yes, it is pronounced like a soft 's' or 'sh' depending on the regional accent.
自我测试 180 个问题
/ 180 correct
Perfect score!
Summary
Use 'demonstrar' when you want to emphasize that something is being made clear through evidence, logic, or visible behavior, especially in formal or emotional contexts.
- Demonstrar is a versatile Portuguese verb meaning 'to show' or 'to prove'.
- It is more formal and intentional than the common verb 'mostrar'.
- It is frequently used for emotions, scientific facts, and professional skills.
- It follows regular -ar conjugation patterns, making it easy to learn.
Upgrade your 'mostrar'
Whenever you are writing a formal email or essay, try replacing 'mostrar' with 'demonstrar' to sound more professional.
Nasal Vowels
Practice the 'em' and 'on' sounds in 'demonstrar'. They are nasal, meaning air should come out of your nose.
Showing Affection
In Brazil, 'demonstrar carinho' is very important. Use this verb when talking about how people treat each other.
Theorems
If you are a student, use 'demonstrar' when explaining your logic or steps in a problem.
例句
O cientista demonstrou a sua teoria com um experimento.
相关内容
相关表达
更多communication词汇
a gente
A1葡萄牙语中表达“我们”的一种非正式方式。它使用动词的单数形式。
a menos que
A2除非你来，否则我不走。
a respeito de
A2关于；至于。
aconselhar
A2建议，劝告。 '我建议你多练习。' (Aconselho que você pratique mais).
Adeus
A1再见 (Zàijiàn - formal). 用于正式或永久的告别。
Adeus!
A2用于告别的词，通常比 'tchau' 更正式。
agradecer
A1To express gratitude or thanks to someone.
aguardar
A1耐心等待某人或某事。
anunciar
B1公开或正式宣布某事。
aplaudir
A2Aplaudir 的意思是鼓掌以示赞赏。
