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demonstrator

B2 noun #9,500 最常用 8分钟阅读

demonstrator

前9,500

开始练习例句笔记与提示 demonstrator 30秒了解

解析 demonstrator in your Level:

A demonstrator is a person who shows you how something works. Imagine you are in a toy shop. A person shows you how a robot walks. That person is a demonstrator. They help you understand. Also, if many people walk in the street with signs to say 'We want peace,' each person is a demonstrator. They are showing what they think. It is a simple word for someone who 'shows' something with their hands or their body.

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A demonstrator is a person who shows or explains something to others. You might see a demonstrator in a big shop. They show you how to use a new coffee machine or a vacuum cleaner. They want to help you buy the product. In a university, a demonstrator is a person who helps students in a science class. They show the students how to do a safe experiment. Another meaning is a person in a protest. When people march in the street to say they are unhappy with a law, they are called demonstrators.

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At the B1 level, you should know that 'demonstrator' has three main uses. First, it refers to a person taking part in a public protest or march. These demonstrators often carry signs and shout slogans to express their opinions. Second, it describes a professional who shows how a product works in a store or at a trade show. Third, in an academic setting, a demonstrator is someone who assists a teacher by showing students how to perform practical tasks, especially in a laboratory. It is a noun that comes from the verb 'to demonstrate,' which means to show clearly.

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A demonstrator is a noun used to describe an individual who participates in a public display of group opinion, such as a political march or rally. At this level, you should understand that 'demonstrator' is a more formal and objective term than 'protester.' Additionally, the word refers to a person who provides a practical exhibition of a product's capabilities, often for marketing purposes. In higher education, a demonstrator is a staff member or postgraduate student who facilitates practical learning by showing students how to use equipment or conduct experiments. The word can also refer to a 'demo' version of a product, like a car used for test drives.

In advanced English, 'demonstrator' is recognized for its specific roles in various professional and social hierarchies. Politically, a demonstrator is a participant in a collective manifestation of dissent or support, often framed within the context of civil liberties. In pedagogical settings, particularly within the 'hard' sciences, a demonstrator serves as a vital link between theoretical lectures and empirical practice, providing technical guidance to students. Furthermore, in commercial discourse, a demonstrator is a specialist who performs 'proof of concept' displays. The term implies an active role in making the abstract (an idea, a theory, or a product's potential) concrete and visible.

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At the C2 level, 'demonstrator' is understood as an agent of manifestation. Whether through the lens of sociopolitical activism—where the demonstrator acts as a physical embodiment of the 'body politic'—or through the lens of technical instruction, the word denotes a role centered on the externalization of knowledge or intent. It can also be used metonymically in industry to refer to a prototype or a display model (e.g., 'the technology demonstrator'). The nuances between 'demonstrator,' 'activist,' 'agitator,' and 'facilitator' are critical at this level, as 'demonstrator' remains the most versatile and functionally descriptive term across scientific, commercial, and social domains.

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开始练习例句笔记与提示

demonstrator 30秒了解

A person in a protest or political march.
A professional showing how a product works.
A university assistant in a science laboratory.
A display model of a product, like a car.

The word demonstrator is a versatile noun that bridges the gap between political activism, commercial sales, and academic instruction. At its core, a demonstrator is someone who 'demonstrates'—they show, prove, or manifest something to an audience. In a political context, a demonstrator is a participant in a public march or rally, using their physical presence to signal support for or opposition to a specific cause. In the world of commerce, a demonstrator is a professional who showcases the features of a product, such as a new kitchen appliance or a piece of software, to potential buyers. Finally, in higher education, particularly in science and engineering, a demonstrator is often a postgraduate student who assists in teaching practical laboratory sessions, guiding undergraduates through experiments.

Political Context: In the realm of social justice and politics, a demonstrator is an individual who exercises their right to assembly. They are often seen carrying placards, chanting slogans, and marching through city streets. This use of the word emphasizes the collective action of 'showing' the government or the public the strength of a particular sentiment.

The peaceful demonstrator held a sign advocating for climate action outside the parliament building.

Commercial Context: In retail environments, a demonstrator (or product demonstrator) is a marketing specialist. Their goal is to 'demonstrate' the value of a product. If you have ever seen someone in a supermarket preparing food samples or showing how a vacuum cleaner works, you have seen a demonstrator in action. They provide a hands-on experience that static advertising cannot replicate.

A skilled demonstrator at the trade show managed to convince dozens of attendees to pre-order the new tablet.

Academic Context: Within universities, the demonstrator role is a pedagogical one. These individuals are usually experts in the technical aspects of a subject. They don't necessarily give the main lecture, but they are the ones 'on the ground' in the lab, showing students how to calibrate equipment, handle chemicals safely, or write code. They demonstrate the application of theory.

As a chemistry demonstrator, Sarah spent her afternoons guiding freshmen through the complexities of titration.

Understanding which 'demonstrator' is being referred to depends entirely on the setting. If you are in a shopping mall, it’s about sales; if you are in a laboratory, it’s about teaching; if you are in a town square with a crowd, it’s about politics. The unifying thread is the act of making something visible or understandable to others through action rather than just words.

Using 'demonstrator' correctly requires attention to the verb and adjectives that accompany it. Because it is a count noun, it almost always requires an article (a, an, the) or a possessive pronoun. It can function as the subject of a sentence, the object of a verb, or part of a prepositional phrase. Below, we explore the grammatical nuances of using 'demonstrator' across its various meanings.

Adjective Collocations: In political contexts, demonstrators are often described by their behavior or their numbers. Common adjectives include 'peaceful,' 'violent,' 'unarmed,' 'masked,' or 'anti-government.' In commercial contexts, you might see 'expert,' 'enthusiastic,' or 'product.' In academia, 'laboratory' or 'student' are frequent descriptors.

Thousands of peaceful demonstrators gathered in the square to demand electoral reform.

Verb Pairings: Demonstrators 'gather,' 'march,' 'protest,' 'shout,' or 'disperse.' In a job context, a demonstrator 'shows,' 'explains,' 'presents,' or 'assists.' When police are involved in a protest, they might 'clash with,' 'arrest,' or 'contain' the demonstrators.

The police used water cannons to disperse the demonstrators after the curfew began.

The dealership is selling the demonstrator car at a significant discount because it has 2,000 miles on it.

When writing about demonstrators, consider the tone of your text. 'Demonstrator' is generally neutral. If you want to show support, you might use 'activist.' If you want to imply trouble, you might use 'rioter' (though this is a different word with a much more negative connotation). In a lab setting, 'demonstrator' is a professional title, so it should be used with the same respect as 'instructor' or 'tutor.'

The word 'demonstrator' is a staple of news broadcasting, academic handbooks, and job descriptions. Its frequency in the media is particularly high during times of social unrest or international summits. You will hear it on BBC, CNN, and Al Jazeera to describe people taking to the streets. However, it also has a very quiet, everyday life in universities and retail shops.

In the News: News anchors often use the word to provide a factual account of events. It is a 'safe' word that describes the action without necessarily taking a side. For example, 'Demonstrators have blocked the main highway' focuses on the physical act of blocking the road.

'Police report that the number of demonstrators has swelled to over fifty thousand since this morning.'

In Universities: If you are a student, you will see 'demonstrator' in your course syllabus. They are the people you go to when you don't know how to use the microscope or why your code isn't compiling. They are the 'hands-on' teachers.

'Please wait for the demonstrator to check your circuit before turning on the power supply.'

The software demonstrator showed us how the AI integration could save us hours of data entry.

In a cultural sense, the 'demonstrator' is often the face of change. Whether they are demonstrating a new technology that will change how we live, or demonstrating for a law that will change how we are governed, the word carries an weight of 'showing the future' or 'showing a different way.'

Even though 'demonstrator' is a B2 level word, it is frequently confused with related terms or used in grammatically incorrect ways. One of the most common issues is the distinction between the person and the event.

Demonstrator vs. Demonstration: A 'demonstration' is the event or the act (the march, the presentation). A 'demonstrator' is the person. You cannot say 'The demonstrator lasted for three hours.' You must say 'The demonstration lasted for three hours' or 'The demonstrators stayed for three hours.'

Incorrect: I went to a demonstrator yesterday.
Correct: I was a demonstrator at the protest yesterday.

Demonstrator vs. Protester: While often used as synonyms, 'protester' is specific to someone who is *against* something. A 'demonstrator' can be someone showing support *for* something. If you are marching in favor of a new law, you are a demonstrator, but calling yourself a 'protester' might be slightly inaccurate.

The demonstrator (person) gave a perfect demonstration (action) of the new software.

Another mistake is using 'demonstrator' when you mean 'monitor' or 'invigilator.' In an exam, the person watching you is an invigilator. A demonstrator is someone who actively shows you how to do something, not just someone who watches you do it. Make sure the 'showing' element is present in the role before using this word.

Depending on the context, there are several words that can replace 'demonstrator' to add more precision or a different emotional weight to your writing.

Protester vs. Activist: Use 'protester' when the person is explicitly opposing a policy. Use 'activist' if the person is dedicated to a cause long-term, not just for one march. 'Demonstrator' is the most neutral of the three.

Presenter vs. Exhibitor: In a business setting, a 'presenter' usually gives a speech with slides. A 'demonstrator' uses the actual product. An 'exhibitor' is the company or person who has a booth at a fair; they might have many demonstrators working for them.

While the presenter talked about the theory of the vacuum, the demonstrator actually cleaned the carpet to prove it worked.

Tutor vs. Teaching Assistant (TA): In a university, a 'tutor' usually leads a small group discussion. A 'demonstrator' is specific to practical work. In the US, the term 'Teaching Assistant' (TA) often covers both roles, but in the UK and Australia, 'demonstrator' is a distinct title for lab-based help.

Choosing the right alternative helps you convey the exact nature of the person's involvement. If you want to emphasize the physical presence in a crowd, 'marcher' works. If you want to emphasize the educational role, 'instructor' or 'demonstrator' is best. If you want to highlight the persuasive nature of a salesperson, 'product specialist' or 'demonstrator' is appropriate.

How Formal Is It?

趣味小知识

The root 'monstrare' is related to the word 'monster'. Historically, a monster was something 'shown' or 'pointed out' as a divine omen or warning.

发音指南

UK /ˈdem.ən.streɪ.tər/

US /ˈdem.ən.streɪ.t̬ɚ/

DEM-on-stra-tor

押韵词

orchestrator sequester investor protester educator generator narrator spectator

常见错误

Putting stress on the third syllable: de-mon-STRA-tor (Incorrect).
Pronouncing the 'o' clearly like 'on': dem-ON-stra-tor (Incorrect).
Dropping the 'n': dem-o-stra-tor (Incorrect).
Pronouncing the ending as '-ter' instead of '-tor' (Spelling error).
Confusing it with 'demonstration' (Noun vs. person).

难度评级

阅读 3/5

Easy to recognize in news articles and textbooks.

写作 4/5

Requires correct spelling (-tor not -ter) and understanding of context.

口语 3/5

Stress on the first syllable is key for natural speech.

听力 3/5

Common in news broadcasts; clear pronunciation helps identification.

接下来学什么

前置知识

show march protest teach product

接下来学习

activist manifestation pedagogy advocacy exhibition

高级

remonstrate empirical dissemination insurgent facilitator

需要掌握的语法

Agent Nouns with -or

Demonstrator, actor, director, conductor.

Noun as Adjective (Modifier)

Demonstrator car, demonstrator model.

Pluralization of Count Nouns

One demonstrator, two demonstrators.

Passive Voice with Agents

The demonstrators were dispersed by the police.

Verb-Noun Collocations

Gather, march, protest (verbs) + demonstrators (noun).

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按水平分级的例句

The demonstrator showed us the new toy.

Le démonstrateur nous a montré le nouveau jouet.

Subject + Verb + Indirect Object + Direct Object.

I saw a demonstrator with a big sign.

J'ai vu un manifestant avec une grande pancarte.

'A' is used because it's a countable noun.

The shop has a demonstrator for the juice.

Le magasin a un démonstrateur pour le jus.

Noun as a job title.

Is he a demonstrator?

Est-il un manifestant / démonstrateur ?

Question form using 'to be'.

She is a good demonstrator.

Elle est une bonne démonstratrice.

Adjective 'good' modifies the noun.

The demonstrator is very kind.

Le démonstrateur est très gentil.

Subject + be + adjective.

Look at that demonstrator!

Regarde ce manifestant !

Imperative sentence.

They are demonstrators.

Ils sont des manifestants.

Plural form ending in -s.

The demonstrator in the mall was selling blenders.

Le démonstrateur dans le centre commercial vendait des mixeurs.

Past continuous used for the action.

The lab demonstrator helped me with the microscope.

Le démonstrateur de laboratoire m'a aidé avec le microscope.

Compound noun 'lab demonstrator'.

Many demonstrators marched through the city.

De nombreux manifestants ont défilé dans la ville.

Quantifier 'many' with plural noun.

She wants to be a product demonstrator.

Elle veut être démonstratrice de produits.

Infinitive 'to be' after 'wants'.

The demonstrator explained the rules clearly.

Le démonstrateur a expliqué les règles clairement.

Adverb 'clearly' modifying the verb.

I spoke to the demonstrator about the car.

J'ai parlé au démonstrateur de la voiture.

Preposition 'to' after 'spoke'.

The demonstrators were peaceful.

Les manifestants étaient pacifiques.

Plural subject-verb agreement.

Wait for the demonstrator before you start.

Attendez le démonstrateur avant de commencer.

Preposition 'for' after 'wait'.

A demonstrator showed us how the new software operates.

Un démonstrateur nous a montré comment le nouveau logiciel fonctionne.

Use of 'how' to introduce a clause.

The police asked the demonstrators to stay on the sidewalk.

La police a demandé aux manifestants de rester sur le trottoir.

Verb + object + to-infinitive.

Our biology demonstrator is very knowledgeable about plants.

Notre démonstrateur de biologie est très compétent sur les plantes.

Adjective 'knowledgeable' + preposition 'about'.

The company hired a demonstrator for the trade fair.

L'entreprise a engagé un démonstrateur pour le salon professionnel.

Past simple of 'hire'.

He worked as a demonstrator while he was at university.

Il a travaillé comme démonstrateur pendant qu'il était à l'université.

'As a' used to describe a job.

The demonstrators were protesting against the high taxes.

Les manifestants protestaient contre les impôts élevés.

Past continuous for an ongoing action.

The demonstrator gave out free samples of the cake.

Le démonstrateur a distribué des échantillons gratuits de gâteau.

Phrasal verb 'give out'.

Each demonstrator was given a specific task in the lab.

Chaque démonstrateur a reçu une tâche spécifique dans le laboratoire.

Passive voice 'was given'.

The peaceful demonstrator was interviewed by the local news.

Le manifestant pacifique a été interviewé par les informations locales.

Passive voice with an agent (by the news).

A skilled demonstrator can make a complex machine look simple.

Un démonstrateur qualifié peut faire paraître une machine complexe simple.

Modal verb 'can' + make + object + bare infinitive.

The demonstrators dispersed quickly when the rain started.

Les manifestants se sont dispersés rapidement quand la pluie a commencé.

Adverbial placement.

I bought a demonstrator car because it was much cheaper.

J'ai acheté une voiture de démonstration parce qu'elle était beaucoup moins chère.

Noun used as an adjective (modifier).

The lab demonstrator pointed out the errors in our calculations.

Le démonstrateur de laboratoire a souligné les erreurs dans nos calculs.

Phrasal verb 'point out'.

Several demonstrators were arrested during the rally.

Plusieurs manifestants ont été arrêtés pendant le rassemblement.

Passive voice 'were arrested'.

The product demonstrator highlighted the safety features of the saw.

Le démonstrateur du produit a souligné les caractéristiques de sécurité de la scie.

Transitive verb 'highlighted'.

The demonstrators were shouting for political change.

Les manifestants réclamaient à grands cris un changement politique.

Prepositional phrase 'for political change'.

The demonstrator skillfully navigated the crowd to deliver the message.

Le manifestant a habilement navigué dans la foule pour délivrer le message.

Adverb 'skillfully' preceding the verb.

As a laboratory demonstrator, he was responsible for overseeing safety protocols.

En tant que démonstrateur de laboratoire, il était responsable de la supervision des protocoles de sécurité.

Gerund 'overseeing' as the object of a preposition.

The demonstrators' resolve remained unshaken despite the cold weather.

La détermination des manifestants est restée inébranlable malgré le froid.

Possessive plural 'demonstrators''.

The trade show featured a demonstrator for every new gadget.

Le salon professionnel présentait un démonstrateur pour chaque nouveau gadget.

Transitive verb 'featured'.

The demonstrator model of the aircraft was used for aerodynamic testing.

Le modèle de démonstration de l'avion a été utilisé pour des tests aérodynamiques.

Noun adjunct usage.

Clashes broke out between the demonstrators and the security forces.

Des affrontements ont éclaté entre les manifestants et les forces de sécurité.

Preposition 'between' for two groups.

The demonstrator's role is to bridge the gap between theory and practice.

Le rôle du démonstrateur est de combler le fossé entre la théorie et la pratique.

Infinitive phrase as a complement.

The demonstrators converged on the city center at noon.

Les manifestants ont convergé vers le centre-ville à midi.

Intransitive verb 'converged' + preposition 'on'.

The demonstrator articulated the grievances of the marginalized community.

Le manifestant a articulé les griefs de la communauté marginalisée.

Sophisticated vocabulary ('articulated', 'grievances').

The company utilized a technology demonstrator to secure further funding.

L'entreprise a utilisé un démonstrateur technologique pour obtenir des financements supplémentaires.

Formal verb 'utilized'.

The demonstrator was tasked with facilitating the workshop's empirical segment.

Le démonstrateur était chargé de faciliter le segment empirique de l'atelier.

Passive construction 'was tasked with' + gerund.

A multitude of demonstrators gathered, creating a formidable presence.

Une multitude de manifestants se sont rassemblés, créant une présence redoutable.

Participle phrase 'creating a formidable presence'.

The demonstrator's expertise was evident in the seamless execution of the trial.

L'expertise du démonstrateur était évidente dans l'exécution sans faille de l'essai.

Abstract nouns 'expertise', 'execution'.

Authorities attempted to delegitimize the demonstrators by labeling them as insurgents.

Les autorités ont tenté de délégitimer les manifestants en les qualifiant d'insurgés.

Complex sentence structure with gerund phrase.

The demonstrator served as a catalyst for the ensuing public debate.

Le manifestant a servi de catalyseur au débat public qui a suivi.

Metaphorical use of 'catalyst'.

He functioned as a senior demonstrator, mentoring junior lab staff.

Il a fonctionné comme démonstrateur principal, encadrant le personnel de laboratoire junior.

Appositive-like participle phrase 'mentoring...'.

近义词

protester activist marcher exhibitor presenter instructor

反义词

spectator bystander observer

常见搭配

peaceful demonstrator

product demonstrator

lab demonstrator

student demonstrator

masked demonstrator

anti-war demonstrator

demonstrator model

clash with demonstrators

disperse demonstrators

skilled demonstrator

常用短语

a crowd of demonstrators

— A large group of people protesting or rallying.

A crowd of demonstrators blocked the main entrance.

act as a demonstrator

— To take on the role of showing something or protesting.

He will act as a demonstrator for the chemistry department.

unarmed demonstrator

— A person in a protest who is not carrying weapons.

The soldiers fired upon unarmed demonstrators.

expert demonstrator

— Someone very good at showing how a product works.

The expert demonstrator made the software look easy to use.

demonstrator car

— A car used by a dealership for test drives.

You can save money by buying a demonstrator car.

lead demonstrator

— The main person in charge of a group of demonstrators.

The lead demonstrator coordinated the march route.

pro-democracy demonstrator

— Someone protesting in favor of democratic rights.

Pro-democracy demonstrators filled the streets of the capital.

hire a demonstrator

— To employ someone to show a product.

We need to hire a demonstrator for the upcoming launch.

demonstrator unit

— An item used for display purposes.

The demonstrator unit in the window is not for sale.

peaceful assembly of demonstrators

— A legal and non-violent gathering of protesters.

The constitution protects the peaceful assembly of demonstrators.

容易混淆的词

demonstrator vs demonstration

Demonstration is the event; demonstrator is the person.

demonstrator vs protester

A protester is always against something; a demonstrator might just be showing support.

demonstrator vs monitor

A monitor watches; a demonstrator shows or teaches.

习语与表达

"demonstrate one's worth"

— To prove that one is valuable or capable.

The new employee quickly demonstrated her worth by solving the crisis.

Formal

"demonstrate against"

— To publicly show opposition to something.

Thousands came out to demonstrate against the new law.

Neutral

"on demonstration"

— Being shown or exhibited.

The new robots are on demonstration at the science museum.

Neutral

"make a demonstration of"

— To show a feeling or quality very clearly.

He made a great demonstration of affection for his family.

Literary

"demonstrable fact"

— Something that can be proven to be true.

It is a demonstrable fact that the climate is changing.

Academic

"demonstrative of"

— Serving as a sign or proof of something.

His silence was demonstrative of his disapproval.

Formal

"demonstrate the point"

— To show that an idea or argument is correct.

Let me use this example to demonstrate the point.

Neutral

"give a demonstration"

— To show how something is done.

The chef will give a demonstration of how to make pasta.

Neutral

"demonstrate interest"

— To show that you are interested in something.

The college looks for students who demonstrate interest in their community.

Formal

"demonstrate a capability"

— To show that a system or person can do something.

The test flight demonstrated the aircraft's capability.

Technical

容易混淆

demonstrator vs illustrator

Both end in -ator and involve showing something.

An illustrator draws pictures for books or ads. A demonstrator shows how a physical object or idea works through action.

The illustrator drew the diagram, and the demonstrator showed how to build the model.

demonstrator vs instructor

Both are teachers.

An instructor is a general term for a teacher. A demonstrator specifically shows practical, hands-on tasks.

The instructor gave the lecture, and the demonstrator ran the lab session.

demonstrator vs activist

Both are involved in causes.

An activist is a person dedicated to a cause over a long time. A demonstrator is someone currently in a march or rally.

Many activists were among the demonstrators yesterday.

demonstrator vs agitator

Both are in crowds.

An agitator tries to stir up trouble or anger. A demonstrator is a neutral term for anyone in the crowd.

The peaceful demonstrators were upset when an agitator started a fight.

demonstrator vs presenter

Both show things to an audience.

A presenter usually gives a formal talk (often with slides). A demonstrator uses the actual object or performs the action.

The presenter introduced the new car, and then the demonstrator took it for a spin.

句型

The [Adjective] demonstrator [Verb-ed] the [Noun].

The kind demonstrator showed the toy.

There were [Number] of demonstrators in the [Place].

There were thousands of demonstrators in the square.

The [Noun] was [Verb-ed] by a [Adjective] demonstrator.

The experiment was explained by a lab demonstrator.

Functioning as a [Noun], the demonstrator [Verb-ed] [Adverb].

Functioning as a guide, the demonstrator spoke eloquently.

The demonstrator's [Abstract Noun] was [Adjective] of the [Noun].

The demonstrator's conviction was indicative of the public mood.

Despite the [Noun], the demonstrators continued to [Verb].

Despite the rain, the demonstrators continued to march.

He works as a [Compound Noun] at [Place].

He works as a lab demonstrator at the university.

I saw a demonstrator [Verb-ing].

I saw a demonstrator holding a sign.

词族

名词

demonstration

demonstrability

demonstrative

动词

demonstrate

形容词

demonstrative

demonstrable

demonstrated

如何使用

frequency

Common in news and academic settings.

常见错误

I went to a demonstrator yesterday. → I went to a demonstration yesterday.
You go to an event (demonstration), you are a person (demonstrator).
The demonstrater showed me the car. → The demonstrator showed me the car.
The word ends in '-or', not '-er'.
The demonstrators was peaceful. → The demonstrators were peaceful.
Plural subject needs a plural verb.
He is a demonstration in the lab. → He is a demonstrator in the lab.
Use the person noun for a job title.
I am protesting against the demonstrator. → I am a demonstrator protesting against the law.
Don't confuse the person with the act of protesting.

小贴士

The -OR Ending

Always remember that it is 'demonstratOR'. Think of other professional roles like 'Doctor' or 'Professor' that also end in '-or'.

Three Main Meanings

Before you use the word, check if you mean: 1. A protester. 2. A salesperson showing a product. 3. A lab assistant. This helps you choose the right adjectives.

Countable Noun

Since it's countable, you usually need 'a' or 'the'. 'I saw demonstrator' is wrong; 'I saw a demonstrator' is right.

Stress the Start

The stress is on 'DEM'. If you put it anywhere else, it might be hard for native speakers to understand you quickly.

Better than Protester?

Use 'demonstrator' in formal writing or news reports. It sounds more objective and less biased than 'protester'.

The 'Demo' Car

If you are buying a car, ask if they have a 'demonstrator'. It's a great way to get a nearly new car for a lower price.

Product Specialists

In modern business, 'Product Demonstrator' is often a specific job title. It's a great keyword to look for if you enjoy sales and public speaking.

Hashtags

On social media, #demonstrator is often used by people in the arts (demonstrating a technique) or activists (at a rally).

University Life

If you are a student, being a 'demonstrator' is a great way to earn money and improve your CV while studying for a PhD.

News Bias

Be aware that news outlets might choose 'demonstrator' or 'rioter' to influence how you feel about a group. 'Demonstrator' is usually the fairer term.

记住它

记忆技巧

Think of a 'DEMON' who is a 'STRATOR' (like a straighter). He 'demonstrates' how to be 'straight' or 'shows' you the way. Or: DEM-ON-STRA-TOR = 'DEMonstrate ON the STRreet' (for protesters).

视觉联想

Imagine a person in a lab coat holding a test tube in one hand (academic) and a protest sign in the other (political), while standing next to a fancy car (commercial).

Word Web

Protest Show Explain March Lab Sales Teacher Sign

挑战

Write three sentences using 'demonstrator' in three different ways: political, academic, and commercial. Try to use an adjective in each.

词源

From the Latin 'demonstrator', which is the agent noun of 'demonstrare' (to point out, indicate, or show).

原始含义： A person who points out or shows something.

Indo-European (Latin branch).

文化背景

Be careful when using 'demonstrator' in conflict zones. One side's 'peaceful demonstrator' might be the other side's 'violent rioter.' Use 'protester' or 'demonstrator' to remain objective.

In the UK and Australia, 'demonstrator' is very common in universities. In the US, 'Teaching Assistant' is more frequent.

The 'Tank Man' (the ultimate lone demonstrator). The 'Suffragettes' (early female demonstrators for the right to vote). The 'Tupperware party' (classic product demonstrators).

在生活中练习

真实语境

Political Protest

peaceful demonstrator
march with demonstrators
disperse the demonstrators
unarmed demonstrator

Retail/Sales

product demonstrator
live demonstration
demonstrator model
expert demonstrator

University Lab

lab demonstrator
student demonstrator
ask the demonstrator
demonstrator's instructions

Automotive Sales

demonstrator car
ex-demonstrator
drive the demonstrator
buy the demonstrator

Technology/R&D

technology demonstrator
proof of concept
system demonstrator
flight demonstrator

对话开场白

"Have you ever participated in a march as a demonstrator for a cause you believe in?"

"What is the most impressive thing you've seen a product demonstrator do in a store?"

"Do you think lab demonstrators at universities are helpful for learning science?"

"Would you ever consider buying a demonstrator car to save money?"

"What qualities do you think make someone a successful demonstrator?"

日记主题

Imagine you are a demonstrator at a historical event. Write about what you see and feel in the crowd.

Describe a time you had to be a demonstrator—showing someone else how to do a task or use a tool.

Discuss the importance of peaceful demonstrators in a modern democratic society.

If you were a product demonstrator, what invention would you want to show to the world and why?

Compare the roles of a demonstrator in a lab and a demonstrator in the street. How are they similar?

常见问题

10 个问题

Mostly, yes. In a political context, they are often used as synonyms. However, 'demonstrator' is more neutral and can also mean someone showing support for something. 'Protester' specifically implies being against something. Outside of politics, 'demonstrator' has other meanings (like a lab assistant) that 'protester' does not have.

Yes, in technical contexts. A 'technology demonstrator' is a prototype or model built to show that a new idea or technology works. For example, a new type of engine might be called a 'demonstrator engine' before it goes into full production.

A lab demonstrator is usually a graduate student who helps undergraduate students during science or engineering labs. They show how to use equipment, explain the steps of an experiment, and ensure everyone is following safety rules. They are the 'hands-on' helpers in the classroom.

In English, many agent nouns (words for people who do things) that come from Latin end in '-or' rather than '-er'. Words like 'actor,' 'creator,' and 'demonstrator' follow this rule. It's important to memorize this to avoid spelling errors.

It can function as a noun adjunct, which acts like an adjective. Examples include 'demonstrator car' or 'demonstrator unit.' In these cases, it describes a product used for display or testing purposes.

It is neutral to slightly formal. It is the standard word used in news reports and academic handbooks. In casual conversation, people might use 'protester' or 'the person showing the stuff,' but 'demonstrator' is perfectly acceptable.

This is a person in a protest who does not use violence, does not break laws, and remains calm while expressing their opinion. It is a common phrase used to distinguish between different types of participants in a rally.

You simply add a /z/ sound at the end: /ˈdem.ən.streɪ.tərz/. The stress remains on the first syllable 'DEM'.

Only if they are showing a practical skill. You wouldn't call a history teacher a demonstrator unless they were demonstrating how to use a historical tool or weapon. It's specific to 'showing how' rather than 'telling about'.

There is no single direct opposite, but depending on the context, it could be 'observer' (someone who just watches), 'student' (someone who learns from the demonstrator), or 'bystander' (someone who is just there by chance).

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