A1 noun #105 よく出る 3分で読める

era

An era is a long period of time in history that has something special or important about it.

Explanation at your level:

An era is a long time in history. It is like a big group of years. We use this word when we talk about the past. For example, you can talk about the era of dinosaurs. It is a very useful word for school!

An era is a period of time that is special. It usually has a name because of something important. For example, the 'Digital era' is the time when computers became popular. You can use this word when you talk about history or changes in the world.

When you want to describe a long period with a specific theme, use era. It is common to hear phrases like 'a new era' or 'the end of an era'. It is more formal than 'time' or 'period' and helps you sound more precise when discussing historical events or technological shifts.

The word era is perfect for distinguishing between different stages of development. It carries a sense of weight and significance. Native speakers often use it to contrast the past with the present, such as 'The Victorian era was very different from our modern era.' It is a staple of academic and journalistic writing.

In advanced contexts, era is used to frame cultural or socio-political narratives. It suggests a cohesive identity for a span of years. You might hear it used figuratively, such as 'the era of the individual,' to describe a dominant philosophy. It is a powerful noun that elevates your discourse by providing a clear temporal boundary for your arguments.

Mastery of era involves understanding its etymological roots in chronological calculation and its evolution into a marker of cultural epoch. In literary and historical analysis, it is used to evoke a sense of nostalgia or to define the parameters of a specific zeitgeist. It is a word that bridges the gap between simple time-keeping and the grand narrative of human civilization, allowing for nuanced discussions about legacy, transition, and the march of history.

30秒でわかる単語

  • Era is a long, distinct period of time.
  • It is often used for historical or thematic grouping.
  • Always use 'an' before it.
  • The plural is 'eras'.

When we talk about an era, we are looking at time through a wide-angle lens. Instead of focusing on a single day or year, an era captures the 'vibe' or the defining characteristics of a long stretch of time.

Think of history like a giant book. Each chapter covers a different era. For example, the 'Space Age' is an era defined by our first steps into the stars. When you use this word, you are signaling that you are looking at the big picture of human progress or change.

It is a fantastic word to use when you want to describe a period that feels different from what came before or after it. Whether it is the 'Jazz Age' or the 'Information Era', it helps us categorize our past so we can understand it better.

The word era has a fascinating journey through time. It comes from the Late Latin word aera, which originally referred to a number or a fixed point from which time was calculated.

Interestingly, the Roman use of aera was often linked to accounting and tax records! It wasn't until later that it evolved to mean a historical period. It traveled through various European languages, including French and Spanish, before settling into English as a way to define historical epochs.

A fun fact is that aera might have originally been the plural of aes, meaning 'brass' or 'money'. So, in a way, the word for a grand historical period started out as a word for counting coins! It shows how our language grows from practical, everyday needs into powerful, abstract concepts.

You will find era used most often in history books, documentaries, and news articles. It is a slightly formal word, so you wouldn't usually use it to describe your weekend, but it is perfect for discussing trends or major changes.

Common collocations include 'a new era', 'the end of an era', and 'a golden era'. These phrases help emphasize that a significant transition has occurred.

If you are writing an essay or giving a presentation, using this word adds a layer of sophistication. It tells your audience that you are thinking about the context of your topic. Just remember: keep it for big, sweeping changes rather than small, daily events.

End of an era: Used when something that lasted a long time finally stops. Example: 'Closing this shop is the end of an era for our neighborhood.'

A new era: The beginning of a fresh, important period. Example: 'The invention of the internet marked a new era for communication.'

Golden era: A time of great prosperity and happiness. Example: 'The 1950s are often called the golden era of Hollywood.'

Bygone era: A time in the distant past that is no longer with us. Example: 'He loves collecting items from a bygone era.'

Post-war era: The time period immediately following a major war. Example: 'The post-war era saw massive economic growth.'

The word era is a regular noun. Its plural form is simply eras. You will almost always use it with an article, like 'an era' or 'the era'.

Pronunciation can be tricky! In American English, it is usually pronounced EE-ruh, while in British English, it is often EE-ruh or AIR-uh. The stress is always on the first syllable.

It rhymes with words like sera (a biological term) and camera (if you slur it slightly). Because it starts with a vowel sound, remember to use 'an' instead of 'a' before it. It is a simple rule, but it makes you sound much more natural when speaking!

Fun Fact

It originally came from a word meaning 'brass' or 'money'.

Pronunciation Guide

UK ˈɪərə

Sounds like 'ear' + 'uh'.

US ˈɪrə

Sounds like 'ear' + 'uh'.

Common Errors

  • Mixing up with 'area'
  • Stress on second syllable
  • Using 'a' instead of 'an'

Rhymes With

sera camera stera hera vera

Difficulty Rating

読解 2/5

Easy to read in context.

Writing 2/5

Easy to use in essays.

Speaking 2/5

Common in conversation.

リスニング 2/5

Frequently heard in documentaries.

What to Learn Next

Prerequisites

time year history

Learn Next

epoch period decade

上級

zeitgeist chronology

Grammar to Know

Articles with Vowel Sounds

an era

Noun Countability

one era, two eras

Adjective Placement

new era

Examples by Level

1

Dinosaurs lived in a long era.

era = time period

Use 'a' before era.

2

That was a fun era.

era = time

Simple sentence structure.

3

The era is over.

era = time

Definite article.

4

It is a new era.

era = new time

Adjective + noun.

5

We study every era.

era = time

Direct object.

6

History has many eras.

eras = plural

Plural noun.

7

This era was cold.

era = time

Subject + verb.

8

I like that era.

era = period

Demonstrative pronoun.

1

The space era changed everything.

2

We are in the digital era.

3

The Victorian era was long ago.

4

That era had many inventions.

5

Every era has its own style.

6

The ice era was very cold.

7

I read about that era.

8

A new era starts today.

1

The end of an era is often sad.

2

We live in a fast-paced era.

3

The golden era of jazz was amazing.

4

He is a man of a bygone era.

5

The post-war era brought change.

6

This era requires new skills.

7

They defined a whole era.

8

History is divided into eras.

1

The technological era has transformed our lives.

2

She felt like a relic from a different era.

3

The era of exploration opened new trade routes.

4

We are witnessing the dawn of a new era.

5

The era of cheap energy is coming to an end.

6

His music defined an entire era of rock.

7

The era of the automobile changed city design.

8

They are looking back at a turbulent era.

1

The era of globalization has faced recent challenges.

2

The Renaissance was an era of unprecedented discovery.

3

We are navigating the uncertainties of a post-truth era.

4

The era of absolute monarchies has long since passed.

5

Critics argue that we are entering an era of instability.

6

The era of the artisan is seeing a resurgence.

7

His work captures the essence of that specific era.

8

The era of mass production shaped modern consumerism.

1

The era of enlightenment fundamentally altered the trajectory of Western thought.

2

She studied the nuances of the pre-industrial era in detail.

3

The era of the great navigators expanded the known world.

4

His philosophy is deeply rooted in the era of romanticism.

5

The era of the city-state dominated ancient politics.

6

We must consider the socio-economic conditions of that era.

7

The era of the printing press democratized information.

8

It was an era defined by radical shifts in artistic expression.

よく使う組み合わせ

a new era
the end of an era
golden era
modern era
bygone era
define an era
mark an era
throughout the era
during the era
a specific era

Idioms & Expressions

"End of an era"

A time when something long-lasting finishes.

Closing the school is the end of an era.

neutral

"A new era dawns"

A new period of time is beginning.

A new era dawned with the peace treaty.

literary

"Golden era"

A period of great success.

The company had a golden era in the 90s.

neutral

"Bygone era"

A time from the past.

He dresses like he is from a bygone era.

formal

"Post-war era"

The time after a war.

The post-war era was a time of rebuilding.

formal

"Digital era"

The time of computers.

We are fully in the digital era now.

neutral

Easily Confused

era vs area

Similar spelling.

Area is space; era is time.

The area is large; the era was long.

era vs epoch

Similar meaning.

Epoch is more formal/scientific.

A new epoch in geology.

era vs eon

Both refer to time.

Eon is much longer (billions of years).

It took an eon to finish.

era vs period

Both refer to time.

Period is general; era is specific/thematic.

A period of rain vs. the Victorian era.

Sentence Patterns

B1

The [adjective] era of [noun]

The golden era of cinema.

A2

We are entering a [adjective] era

We are entering a new era.

B1

This marks the end of an era

This marks the end of an era.

B2

Throughout the era of [noun]

Throughout the era of steam.

C1

An era defined by [noun]

An era defined by change.

語族

Nouns

era a long period of time

Adjectives

eral relating to an era (rare)

関連

epoch synonym
period synonym

How to Use It

frequency

7

Formality Scale

Academic (Formal) Journalistic (Neutral) Casual conversation (Rare)

よくある間違い

Using 'a era' an era
Era starts with a vowel sound, so use 'an'.
Confusing with 'area' era
Area is a place; era is a time.
Using it for short time period or moment
Era implies a long, significant time.
Pluralizing as 'eras' eras
This is actually correct, but sometimes learners forget it.
Mispronouncing as 'air-uh' EE-ruh
Standard pronunciation is EE-ruh.

Tips

💡

Memory Palace Trick

Imagine a timeline on your wall; place 'Era' at the start of each big section.

💡

When Native Speakers Use It

Use it when discussing major cultural shifts.

🌍

Cultural Insight

We often name eras after leaders or major inventions.

💡

Grammar Shortcut

Always check for 'an' before it.

💡

Say It Right

Focus on the long 'E' sound.

💡

Don't Make This Mistake

Don't confuse it with 'area' (a place).

💡

Did You Know?

It started as a word for money!

💡

Study Smart

Read historical headlines to see how it's used.

💡

Expand Your Reach

Pair it with adjectives like 'turbulent' or 'prosperous'.

💡

Writing Tip

Use it to frame your thesis statement.

Memorize It

Mnemonic

E-R-A: Every Remarkable Age.

Visual Association

A giant hourglass with different historical scenes inside.

Word Web

Time History Change Epoch Decade

チャレンジ

Write down three eras you have lived through.

語源

Latin

Original meaning: A number or fixed point for counting time.

文化的な背景

None, it is a neutral historical term.

Commonly used in history class and media to categorize decades.

The Space Era The Victorian Era The Digital Era

Practice in Real Life

Real-World Contexts

History Class

  • The Victorian era
  • The era of exploration
  • Historical era

Technology

  • The digital era
  • A new era of AI
  • The information era

Business

  • A new era for the company
  • The end of an era
  • An era of growth

Politics

  • A turbulent era
  • The post-war era
  • A new era of diplomacy

Conversation Starters

"What do you think will define our current era?"

"If you could live in any historical era, which one would it be?"

"Do you think we are in a golden era of technology?"

"What is the end of an era you have experienced in your life?"

"How does the digital era change the way we learn?"

Journal Prompts

Describe the 'era' of your childhood in three words.

What major changes define the current era we live in?

If you were to name the next era of human history, what would it be?

Write about a 'bygone era' you find interesting.

よくある質問

8 問

Yes, it is a long, distinct period.

No, it is too short.

EE-ruh.

Yes, you can have many eras.

Eras.

It is neutral to formal.

No, always use 'an era'.

Yes, they are very similar.

自分をテスト

fill blank A1

We live in a new ___.

正解! おしい! 正解: era

Era describes a time period.

multiple choice A2

Which is an era?

正解! おしい! 正解: The Victorian era

The Victorian era is a historical time.

true false B1

An era is a very short time.

正解! おしい! 正解: 間違い

An era is a long, distinct period.

match pairs B1

Word

意味

All matched!

Matching phrases to meanings.

sentence order B2

下の単語をタップして文を組み立てよう
正解! おしい! 正解:

An era is a long...

multiple choice B2

What article goes before era?

正解! おしい! 正解: both an and the

Both are correct depending on context.

true false C1

Era is a synonym for moment.

正解! おしい! 正解: 間違い

They are opposites in duration.

fill blank C1

The ___ of the internet changed everything.

正解! おしい! 正解: era

Era fits the scale of the internet.

multiple choice C2

What is the etymological root?

正解! おしい! 正解: Latin

It comes from Late Latin.

true false C2

Eras is the plural of era.

正解! おしい! 正解: 正しい

Yes, it is a regular noun.

スコア: /10

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Timeの関連語

minute

A2

1分は60秒の短い時間の単位です。物事がどれくらい続くかを測るのに使います。

antetempful

C1

Describing an action, state, or mindset that occurs or is prepared significantly ahead of the expected or required time. It implies a proactive and anticipatory quality, often used to describe planning or behavior that preempts future needs.

Tuesday

A1

週の3番目の曜日で、月曜日の次、水曜日の前です。仕事では2番目の日とされます。

antactate

C1

Describing a condition, action, or state that occurs or is required prior to a primary event or process. It is frequently used in technical or academic contexts to denote necessary preparatory measures or antecedent conditions.

April

A1

April is the fourth month of the year in the Gregorian calendar, following March and preceding May. It has 30 days and is typically associated with the arrival of spring in the northern hemisphere.

prepaterent

C1

指定された時間や主要な出来事よりも前に、現れたり、見えたり、アクセス可能になったりすること。

period

B2

A length or portion of time that is defined by specific events, characteristics, or conditions. It can also refer to one of the divisions of a school day or a punctuation mark used at the end of a sentence.

lifetime

A1

人が生きている期間全体のことです。機械などの物が正常に機能する期間を指すこともあります。

hours

B1

時間(hours)は60分を単位とします。仕事や特定の活動に割り当てられた時間枠を指すこともあります。

punctual

A1

Being on time and not late. It describes a person who arrives or an action that happens at the exact scheduled time.

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