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B2 noun #500 よく出る 11分で読める

birthday

上位500

At the A1 level, 'birthday' is one of the first important nouns you learn. It is the day you were born. We use it to talk about parties, cakes, and gifts. You say 'My birthday is on...' and then the date. You also learn the song 'Happy Birthday to You.' It is a happy word. You use it with simple verbs like 'have' or 'is.' For example: 'I have a birthday party today.' or 'My birthday is in May.' It is a very common word in daily life. You also learn related words like 'cake,' 'present,' 'friend,' and 'party.' At this level, you don't need to worry about complex grammar; just remember to use 'on' for the day and 'in' for the month.

At the A2 level, you start using 'birthday' in more complete sentences and with more detail. You can talk about what you did for your birthday in the past tense: 'Last year, I went to a restaurant for my birthday.' You also learn to use ordinal numbers like 'first,' 'second,' and 'twenty-first' to say how old someone is: 'It is my son's fifth birthday.' You might use compound nouns like 'birthday card' or 'birthday present.' You also learn the difference between 'birthday' and 'date of birth' on simple forms. You can ask others: 'When is your birthday?' and 'What do you want for your birthday?' It is a key word for social interaction and making friends.

At the B1 level, you use 'birthday' to describe traditions and personal experiences in more depth. You can talk about 'milestone birthdays' and why they are important in your culture. You understand more complex phrases like 'surprise birthday party' or 'belated birthday wishes.' You can use 'birthday' as a subject or object in more complex sentence structures, such as: 'Celebrating my birthday with my family is a tradition I never want to break.' You also start to see 'birthday' used in professional contexts, like knowing when a colleague has a birthday or understanding company policies about birthday leave. You are comfortable using prepositions correctly: 'on my birthday,' 'for my birthday,' 'around my birthday.'

At the B2 level, you understand the broader implications of the word 'birthday.' You recognize it as a legal marker for reaching the age of majority. you can discuss the social pressures or expectations associated with certain birthdays, like turning 30 or 40. You understand idiomatic expressions like 'birthday suit' and can use the word metaphorically, such as 'the birthday of a new era.' You can distinguish between 'birthday' and 'anniversary' with precision. You might use the word in discussions about demographics, legal rights, or cultural anthropology. Your vocabulary includes related terms like 'natal,' 'milestone,' and 'rites of passage.' You can write detailed descriptions of birthday celebrations and their significance.

At the C1 level, you use 'birthday' with nuance and sophistication. You might explore the existential or philosophical aspects of birthdays in writing or debate—how they represent both a celebration of life and a reminder of mortality. You understand the historical and etymological roots of birthday traditions. You can use the word in academic contexts, such as 'the legal determination of age based on the anniversary of birth.' You are aware of the subtle differences in register, using 'date of birth' in formal reports and 'birthday' in casual conversation. You can interpret literature where a birthday serves as a central symbol or turning point in a narrative. You use the word effortlessly in complex, multi-clause sentences.

At the C2 level, you have a complete mastery of 'birthday' and its myriad connotations. You can use it in highly specialized contexts, such as legal statutes regarding 'attaining the age of' on the eve of a birthday. You can appreciate and use the word in high-level wordplay, puns, or complex metaphors. You understand the global variations of birthday celebrations and can discuss them with cultural sensitivity and depth. You can analyze the socio-economic impact of the 'birthday industry.' Whether you are writing a legal brief, a poetic reflection, or a technical manual, you use 'birthday' and its synonyms with absolute precision and stylistic flair, reflecting a deep understanding of the English language's nuances.

練習する例文メモとヒント

birthday 30秒で

A birthday is the annual anniversary of the day you were born, used globally to track age and celebrate personal growth and life milestones.
It functions as a legal marker for adulthood and rights, while socially serving as a reason for gatherings, gift-giving, and cultural rituals like cakes.
Commonly paired with prepositions like 'on' for the day and 'for' for gifts, it is a countable noun central to social and administrative life.
While often confused with 'anniversary', a birthday specifically refers to a person's birth date, whereas 'anniversary' covers all recurring historical or personal events.

The term birthday serves as a fundamental linguistic marker for the passage of time in human life. At its core, it denotes the specific calendar date on which an individual was born, but its usage extends far beyond a simple chronological notation. In contemporary society, a birthday represents a complex intersection of personal identity, social celebration, and legal status. It is the primary metric by which we measure human development, transitioning from infancy to childhood, adolescence, and eventually adulthood. The word is used universally across cultures, though the traditions associated with it vary significantly. For instance, in many Western cultures, it is synonymous with parties, gifts, and the symbolic blowing out of candles on a cake, whereas in other contexts, it might be a day of quiet reflection or religious observance.

Biological Context: The birthday marks the completion of another solar cycle since the organism's emergence into the world. It is the standard unit for calculating age in medical and developmental psychology.
Legal Context: In jurisprudence, the birthday is the 'trigger date' for legal rights. Reaching a specific birthday grants the right to vote, drive, enter into contracts, or be held fully responsible for criminal actions.
Social Context: It acts as a social glue, providing a recurring opportunity for friends and family to gather and acknowledge the value of an individual's presence in their lives.

Even though she was working late, her colleagues surprised her with a small cake to celebrate her birthday in the office breakroom.

Furthermore, the word 'birthday' is often used metaphorically to describe the anniversary of the founding of an institution or the creation of an invention. We might speak of the 'birthday of the internet' or the 'birthday of a nation' (though 'anniversary' or 'independence day' is more common for the latter). In the digital age, the word has taken on new life in social media, where 'birthday notifications' drive a significant portion of daily interactions. The concept of a 'milestone birthday'—such as the 1st, 13th, 16th, 18th, 21st, 30th, 40th, 50th, and so on—carries specific cultural weight, often necessitating larger celebrations or reflecting a transition into a new life stage. Understanding the word 'birthday' requires recognizing it not just as a noun for a date, but as a multifaceted concept involving time, law, and social ritual.

The legal system recognizes your eighteenth birthday as the moment you transition from a minor to a legal adult with full responsibilities.

I completely forgot it was his birthday until I saw the reminder on my phone this morning.

Symbolism: The birthday cake and candles represent the light of life, with the tradition of making a wish serving as a bridge between reality and hope for the future.

She decided to treat herself to a spa day for her birthday instead of throwing a large party.

The museum is offering free admission to anyone visiting on their birthday this month.

Etymological Roots: Derived from Middle English 'birthe-day', combining the concept of the act of being born with the specific period of a day.

Using the word birthday correctly involves understanding its role as a countable noun and its common prepositional pairings. Most frequently, we use the preposition 'on' when referring to the specific day: 'on my birthday.' However, when discussing the general time frame around the date, we might say 'around my birthday' or 'for my birthday' when referring to gifts or activities planned to mark the occasion. The word often functions as a modifier in compound nouns, such as birthday party, birthday cake, birthday present, and birthday card. In these cases, it describes the purpose of the object or event.

Common Verbs: We 'have' a birthday, 'celebrate' a birthday, 'forget' a birthday, or 'mark' a birthday. In more formal contexts, one might 'observe' a birthday.

I am planning to host a surprise birthday dinner for my mother next Saturday.

When describing someone's age in relation to their birthday, we use ordinal numbers: 'It is her 21st birthday.' Note that the possessive form is almost always used: 'John's birthday,' 'my birthday,' 'their birthdays.' In plural usage, 'birthdays' refers to the birth dates of multiple people or multiple occurrences of the day over years. For example, 'Our birthdays are only two days apart' or 'I have had many wonderful birthdays in this city.' It is also important to distinguish between the 'birthday' (the anniversary) and the 'birth date' (the specific day, month, and year of birth). While they are related, 'birthday' focuses on the recurring celebration, whereas 'birth date' is a fixed historical fact.

The twins always share a birthday cake, but they each get their own set of candles.

What do you want to do for your birthday this year? We could go to the beach or stay in town.

Adjective Usage: While primarily a noun, it acts as an attributive noun (adjective-like) in phrases like 'birthday wishes' or 'birthday month'.

He received hundreds of birthday messages after his post went viral on social media.

The company gives every employee a paid day off on their birthday as a benefit.

Prepositional Patterns: 'On' (specific day), 'For' (purpose/gift), 'In' (the month of), 'During' (the celebration).

The word birthday is ubiquitous, appearing in almost every domain of human interaction. In the domestic sphere, it is heard in the planning of family events and the singing of the 'Happy Birthday' song. In the commercial world, businesses use it as a marketing tool, offering 'birthday discounts' or 'birthday rewards' to loyal customers. You will hear it in schools when teachers acknowledge a student's special day, and in healthcare settings when a nurse confirms a patient's identity. In the legal and administrative world, while 'date of birth' is the formal term on paper, officials will often ask, 'When is your birthday?' during verbal verification.

In Media: Movies and TV shows frequently use birthdays as plot devices to show a character's growth, loneliness, or the passage of time.

The radio announcer gave a shout-out to all the listeners celebrating a birthday today.

In the workplace, birthdays can be a point of social etiquette. Some offices have a culture of bringing in treats or having a 'birthday lunch' for team members. In literature, birthdays often symbolize a 'coming of age' or a moment of existential crisis. For example, a character might feel a sense of dread as they reach a 'big' birthday like 40 or 50, reflecting on their life's achievements. In pop culture, the 'birthday suit' is a common idiomatic expression referring to being naked (as one is when born). You'll also hear the word in the context of astrology, where one's birthday determines their zodiac sign, a topic of frequent casual conversation.

The restaurant staff gathered around the table to sing a boisterous birthday song to the embarrassed teenager.

She was born on a leap day, so she technically only has a 'real' birthday every four years.

Digital Footprint: Social media platforms like Facebook and LinkedIn have made the 'birthday' a central part of their notification ecosystems.

The queen's official birthday is celebrated in June, regardless of her actual date of birth.

I'm not doing anything big for my birthday; I just want a quiet night in with a good book.

Retail & Commerce: 'Birthday sales' are common marketing events where stores offer discounts to celebrate their own founding or the customer's birth.

While birthday is a relatively simple word, learners often make specific errors in its application. The most frequent mistake is confusing 'birthday' with 'anniversary.' While a birthday is technically the anniversary of one's birth, in English, the word 'anniversary' is typically reserved for events like weddings, the founding of a company, or the date of a tragic event. Saying 'It is my wedding birthday' is incorrect; it should be 'wedding anniversary.' Conversely, saying 'It is my 20th anniversary' without context usually implies a work or marriage milestone, not a person's age.

Preposition Errors: Learners often say 'in my birthday' instead of 'on my birthday.' Remember: 'on' for specific days, 'in' for months or years.

Incorrect: We are celebrating our five-year birthday of living in this house. (Correct: anniversary)

Another common error involves the use of the word 'birth' versus 'birthday.' 'Birth' is the act of being born, while 'birthday' is the anniversary. You wouldn't say 'I remember my birthday' if you mean the day you were actually born (unless you have an impossible memory!). You would say 'I remember the day of my birth' or 'I was told about my birth.' Additionally, the pluralization of 'birthday' in compound nouns can be tricky. It is 'birthday parties' (plural parties), not 'birthdays parties.' The word 'birthday' acts as an adjective here and stays singular. Finally, be careful with 'Happy Birthday' as a greeting. It is used on the day itself or very close to it; using it weeks later is usually accompanied by the word 'belated' (e.g., 'Happy belated birthday').

Incorrect: My birthday is 1995. (Correct: I was born in 1995 or My birth year is 1995.)

Incorrect: I will have a birthday in Friday. (Correct: on Friday)

Confusing 'Age' and 'Birthday': 'My birthday is 25' is incorrect. You should say 'I am 25' or 'It is my 25th birthday'.

Incorrect: He gave me a birthday cake for my 10th anniversary. (Correct: 10th birthday)

Incorrect: Are you coming to my birthdays party? (Correct: birthday party)

Capitalization: 'Birthday' is not usually capitalized unless it starts a sentence or is part of a specific title (e.g., 'Happy Birthday').

While birthday is the standard term, several alternatives exist depending on the register and context. In formal or legal settings, date of birth (often abbreviated as DOB) is the preferred term. It is precise and refers to the day, month, and year. In very formal or poetic language, one might use natal day, though this is rare in modern speech. In some religious or cultural contexts, a name day (the feast day of a saint one is named after) serves a similar social function to a birthday, particularly in countries like Greece, Italy, or Poland.

Birthday vs. Anniversary: A birthday is specifically for a person's birth. An anniversary is for any recurring event (marriage, job, historical event).
Birthday vs. Date of Birth: Birthday is the recurring date (e.g., June 5th). Date of birth is the specific historical moment (e.g., June 5th, 1990).

The form asks for your date of birth, not just your birthday, to verify your age for the insurance policy.

In informal contexts, especially among younger generations, b-day or born day (the latter often heard in hip-hop culture) are common. When someone reaches a very significant age, like 50 or 100, we might call it a jubilee or a centenary, though '100th birthday' remains the most common. Another related term is milestone, which refers to any significant point in life, often a specific birthday like the 18th or 21st. In some contexts, people use level up (borrowed from gaming) to describe having a birthday, as in 'I'm leveling up to 30 today!'

Instead of a traditional birthday, they celebrated his 'rebirth day' to mark one year since his successful surgery.

In many Latin American cultures, the 'Quinceañera' is a massive celebration for a girl's 15th birthday.

Register Differences: Formal: Date of Birth; Neutral: Birthday; Informal: B-day; Poetic: Natal day.

The king's natal day was observed with a national holiday and a grand parade through the capital.

He preferred to celebrate his name day rather than his birthday, following his family's old traditions.

Summary Table: Use 'Birthday' for people. Use 'Anniversary' for events. Use 'Date of Birth' for documents.

How Formal Is It?

フォーマル

ニュートラル

カジュアル

Child friendly

スラング

豆知識

The tradition of birthday candles started with the ancient Greeks, who put candles on cakes to make them glow like the moon in honor of Artemis.

発音ガイド

UK /ˈbɜːθ.deɪ/

US /ˈbɝːθ.deɪ/

The primary stress is on the first syllable: BIRTH-day.

韻が合う語

Earth day Worth stay Mirth play Birth way Girth sway Dearth gray Berth pay Forth say

よくある間違い

Pronouncing 'th' as 't' (birt-day).
Pronouncing 'th' as 'f' (birf-day).
Missing the 'h' entirely.
Stressing the second syllable (birth-DAY).
Shortening the 'ay' sound in 'day'.

難易度

読解 1/5

Very easy to recognize in text as it is a high-frequency word.

ライティング 2/5

Simple to spell, but watch out for the 'th' and 'y'.

スピーキング 2/5

Pronunciation of 'th' can be tricky for some learners.

リスニング 1/5

Easily understood in conversation due to context.

次に学ぶべきこと

前提知識

born day year date party

次に学ぶ

anniversary celebration milestone age tradition

上級

natal nativity chronological majority jubilee

知っておくべき文法

Prepositions of Time

Use 'on' for birthdays: 'On my birthday...'

Ordinal Numbers

Use ordinals for specific birthdays: 'My 21st birthday'.

Possessive Nouns

Usually requires a possessive: 'Sarah's birthday'.

Compound Nouns

'Birthday' acts as an adjective in 'birthday cake'.

Capitalization

Only capitalize in titles or at the start of sentences.

レベル別の例文

Happy birthday to you!

¡Feliz cumpleaños a ti!

Common greeting.

My birthday is in June.

Mi cumpleaños es en junio.

Use 'in' for months.

I have a birthday party today.

Tengo una fiesta de cumpleaños hoy.

Simple present tense.

This is a birthday present for you.

Este es un regalo de cumpleaños para ti.

Compound noun: birthday present.

We eat cake on my birthday.

Comemos pastel en mi cumpleaños.

Use 'on' for the day.

How old are you on your birthday?

¿Cuántos años cumples en tu cumpleaños?

Question form.

I like my birthday.

Me gusta mi cumpleaños.

Simple subject-verb-object.

She has a big birthday cake.

Ella tiene un pastel de cumpleaños grande.

Adjective placement.

I invited ten friends to my birthday party.

Invité a diez amigos a mi fiesta de cumpleaños.

Past tense 'invited'.

What did you get for your birthday?

¿Qué te regalaron por tu cumpleaños?

Past tense question.

It is my brother's eighteenth birthday tomorrow.

Mañana es el decimoctavo cumpleaños de mi hermano.

Possessive 'brother's' and ordinal 'eighteenth'.

I usually go out for dinner on my birthday.

Normalmente salgo a cenar en mi cumpleaños.

Adverb of frequency 'usually'.

She sent me a beautiful birthday card.

Ella me envió una hermosa tarjeta de cumpleaños.

Indirect object 'me'.

We are planning a surprise for his birthday.

Estamos planeando una sorpresa para su cumpleaños.

Present continuous 'are planning'.

My birthday is the most exciting day of the year.

Mi cumpleaños es el día más emocionante del año.

Superlative 'the most exciting'.

He was born on the same birthday as his father.

Nació el mismo día de cumpleaños que su padre.

Phrase 'the same... as'.

I'm looking forward to my birthday because I'm turning twenty-one.

Estoy deseando que llegue mi cumpleaños porque cumplo veintiuno.

Phrasal verb 'looking forward to'.

In my country, the first birthday is a very significant event.

En mi país, el primer cumpleaños es un evento muy significativo.

Adjective 'significant'.

If it weren't for my birthday, I wouldn't have seen my old friends.

Si no fuera por mi cumpleaños, no habría visto a mis viejos amigos.

Second conditional.

She decided to celebrate her birthday by going on a solo trip.

Decidió celebrar su cumpleaños haciendo un viaje sola.

Gerund 'going' after preposition 'by'.

My parents always make a big deal out of my birthday.

Mis padres siempre le dan mucha importancia a mi cumpleaños.

Idiom 'make a big deal out of'.

I received many belated birthday wishes this week.

Recibí muchas felicitaciones de cumpleaños atrasadas esta semana.

Adjective 'belated'.

We need to book a venue for the birthday celebration soon.

Necesitamos reservar un lugar para la celebración del cumpleaños pronto.

Infinitive 'to book'.

His birthday falls on a Monday this year, which is a bit disappointing.

Su cumpleaños cae en lunes este año, lo cual es un poco decepcionante.

Relative clause 'which is...'.

Reaching your eighteenth birthday marks a major milestone in your legal life.

Cumplir dieciocho años marca un hito importante en tu vida legal.

Gerund 'reaching' as subject.

The company celebrated its tenth birthday with a gala dinner for all staff.

La empresa celebró su décimo aniversario con una cena de gala para todo el personal.

Metaphorical use of 'birthday'.

She felt a sense of nostalgia as her thirtieth birthday approached.

Sintió una sensación de nostalgia a medida que se acercaba su trigésimo cumpleaños.

Conjunction 'as' for simultaneous actions.

Birthdays often serve as a time for personal reflection and goal setting.

Los cumpleaños suelen servir como un momento para la reflexión personal y la fijación de metas.

Verb 'serve as'.

Despite the rain, the outdoor birthday party was a resounding success.

A pesar de la lluvia, la fiesta de cumpleaños al aire libre fue un éxito rotundo.

Preposition 'despite'.

He was embarrassed when the entire restaurant sang for his birthday.

Se sintió avergonzado cuando todo el restaurante cantó por su cumpleaños.

Passive-like structure 'was embarrassed'.

The charity was founded on the founder's fiftieth birthday.

La organización benéfica fue fundada en el quincuagésimo cumpleaños del fundador.

Passive voice 'was founded'.

She treats every birthday as an opportunity to reinvent herself.

Ella trata cada cumpleaños como una oportunidad para reinventarse.

Verb 'treat... as'.

The existential weight of one's birthday can sometimes lead to a mid-life crisis.

El peso existencial del propio cumpleaños a veces puede llevar a una crisis de la mediana edad.

Abstract noun phrase 'existential weight'.

Legal capacity is often tethered to the precise moment of one's eighteenth birthday.

La capacidad legal a menudo está ligada al momento preciso del decimoctavo cumpleaños de uno.

Passive voice 'is tethered to'.

The novel uses the protagonist's birthday as a recurring motif for the loss of innocence.

La novela utiliza el cumpleaños del protagonista como un motivo recurrente para la pérdida de la inocencia.

Literary term 'motif'.

In many cultures, birthdays are less about the individual and more about communal gratitude.

En muchas culturas, los cumpleaños se tratan menos del individuo y más de la gratitud comunitaria.

Comparative structure 'less about... and more about'.

He spent his birthday in quiet contemplation, away from the noise of modern celebrations.

Pasó su cumpleaños en tranquila contemplación, lejos del ruido de las celebraciones modernas.

Prepositional phrase 'in quiet contemplation'.

The discrepancy between one's biological age and their perceived age often peaks on a birthday.

La discrepancia entre la edad biológica de uno y su edad percibida a menudo alcanza su punto máximo en un cumpleaños.

Noun 'discrepancy'.

The social construct of the 'milestone birthday' drives significant consumer behavior.

La construcción social del 'cumpleaños histórico' impulsa un comportamiento de consumo significativo.

Compound noun 'social construct'.

Her birthday served as the catalyst for a major career change.

Su cumpleaños sirvió como catalizador para un importante cambio de carrera.

Metaphorical 'catalyst'.

The temporal significance of the birthday is magnified by the rituals we attach to it.

La importancia temporal del cumpleaños se magnifica por los rituales que le atribuimos.

Academic tone.

One might argue that the birthday is the ultimate secular sacrament of the modern age.

Se podría argumentar que el cumpleaños es el sacramento secular definitivo de la era moderna.

Philosophical register.

The legal fiction that one attains a new age at the first moment of their birthday is a cornerstone of civil law.

La ficción legal de que uno alcanza una nueva edad en el primer momento de su cumpleaños es una piedra angular del derecho civil.

Legal terminology 'legal fiction'.

Birthdays act as chronological anchors in the fluid sea of human memory.

Los cumpleaños actúan como anclas cronológicas en el mar fluido de la memoria humana.

Metaphorical language.

The commercialization of birthdays has arguably diluted their intrinsic spiritual value.

La comercialización de los cumpleaños posiblemente ha diluido su valor espiritual intrínseco.

Adverb 'arguably' to qualify a statement.

To celebrate a birthday is to acknowledge the persistent triumph of life over entropy.

Celebrar un cumpleaños es reconocer el triunfo persistente de la vida sobre la entropía.

Infinitive phrases as subject and complement.

The cultural nuances of birthday observances reveal deep-seated values regarding aging and lineage.

Los matices culturales de las celebraciones de cumpleaños revelan valores profundamente arraigados con respecto al envejecimiento y el linaje.

Complex subject-verb agreement.

He viewed his birthday not as a celebration of past years, but as a solemn reckoning with the years remaining.

Él veía su cumpleaños no como una celebración de los años pasados, sino como un ajuste de cuentas solemne con los años que le quedaban.

Correlative conjunction 'not as... but as'.

類義語

anniversary date of birth natal day DOB name day

反対語

deathday date of passing

よく使う組み合わせ

happy birthday

birthday cake

birthday party

birthday present

milestone birthday

birthday wish

birthday card

birthday suit

belated birthday

birthday treat

よく使うフレーズ

When is your birthday?

It's my birthday!

For my birthday

On your birthday

Birthday honors

Many happy returns

Birthday boy/girl

Surprise birthday party

Official birthday

Birthday month

よく混同される語

birthday vs Anniversary

Anniversary is for events; Birthday is for people's birth.

birthday vs Birth

Birth is the act; Birthday is the yearly celebration.

birthday vs Name Day

Name Day is a religious/cultural alternative based on a saint's name.

慣用句と表現

"in your birthday suit"

To be completely naked, as you were when you were born.

The baby was playing in the garden in his birthday suit.

informal/humorous

"birthday blues"

Feeling sad or depressed on or around one's birthday.

She always gets the birthday blues when she thinks about getting older.

informal

"make a wish"

A ritual of thinking of a desire before blowing out birthday candles.

Close your eyes and make a wish!

neutral

"level up"

Gaining a year of age, often used by gamers.

I'm leveling up to 25 today!

slang

"over the hill"

Past the prime of life, often used for 40th or 50th birthdays.

He got a lot of 'over the hill' cards for his 50th birthday.

informal/humorous

"the big three-oh/four-oh"

Referring to turning 30, 40, etc.

She's nervous about hitting the big four-oh next month.

informal

"born with a silver spoon in one's mouth"

Born into a wealthy and privileged family.

He didn't have to work hard; he was born with a silver spoon in his mouth.

idiomatic

"new lease on life"

A fresh start, often felt after a significant birthday.

Turning 60 gave him a new lease on life.

neutral

"coming of age"

Reaching the age of legal adulthood or maturity.

The film is a classic coming-of-age story set on a 16th birthday.

neutral

"cut the cake"

The act of starting the birthday celebration's food portion.

Is it time to cut the cake yet?

neutral

間違えやすい

birthday vs Anniversary

Both celebrate a past event returning on the same date.

Anniversary is general; Birthday is specific to birth.

We celebrated our wedding anniversary, not our wedding birthday.

birthday vs Birth

They share the same root.

Birth is the event; Birthday is the anniversary.

The birth of the baby was at 2 AM; her birthday will be celebrated every year.

birthday vs Nativity

Both relate to birth.

Nativity usually refers specifically to the birth of Jesus or is used in formal art contexts.

The nativity scene was beautiful.

birthday vs Age

They are related to the same concept of time.

Age is the total time; Birthday is the day it increases.

My age is 20, but my birthday is tomorrow.

birthday vs DOB

Used in the same context.

DOB is an acronym for 'Date of Birth' used on forms.

Please write your DOB on the application.

文型パターン

My birthday is [Date].

My birthday is June 12th.

I had a [Adjective] birthday.

I had a great birthday.

For my birthday, I [Verb].

For my birthday, I went to London.

It was my [Ordinal] birthday, which marked [Event].

It was my 18th birthday, which marked my transition to adulthood.

The significance of my birthday lies in [Concept].

The significance of my birthday lies in the gathering of family.

Seldom does a birthday pass without [Action].

Seldom does a birthday pass without a moment of deep reflection.

All

Happy [Ordinal] Birthday, [Name]!

Happy 30th Birthday, John!

All

What do you want for your birthday?

What do you want for your birthday this year?

語族

名詞

動詞

形容詞

使い方

frequency

Extremely high; used daily in various contexts.

よくある間違い

Happy wedding birthday! → Happy wedding anniversary!
Birthdays are only for the day a person was born.
I am in my birthday. → It is my birthday. / I am celebrating my birthday.
You cannot be 'in' a birthday like a room; it's a day.
My birthday is 1990. → I was born in 1990. / My birth year is 1990.
A birthday is a date (month/day), not a year.
Are you coming to my birthdays party? → Are you coming to my birthday party?
In compound nouns, the first noun (birthday) acts as an adjective and is singular.
He has 20 birthdays. → He is 20 years old. / It is his 20th birthday.
We don't 'have' a number of birthdays to describe age in English.

ヒント

Preposition Use

Always use 'on' for the day of the birthday. 'I'll see you on your birthday!'

RSVP

If you are invited to a birthday party, it is polite to RSVP as soon as possible.

Milestones

Learn the specific names for milestones like 'Sweet Sixteen' or 'Golden Jubilee'.

Cards

When writing a card, adding a personal memory makes the 'Happy Birthday' more meaningful.

Song

Learn the 'Happy Birthday' song; it is used in almost every English-speaking social circle.

Work Etiquette

Check your office culture before celebrating a colleague's birthday; some prefer privacy.

B-day

Use 'b-day' only in very casual texts or with close friends.

The 'H'

Don't forget the 'h' in the middle. It's 'birth' + 'day'.

Calendar

Set digital reminders for friends' birthdays so you never forget and have to say 'belated'.

Birthday Suit

Use this idiom carefully; it's funny but only appropriate in informal, lighthearted contexts.

暗記しよう

記憶術

Think of 'Birth' (the start) + 'Day' (the time). It's the 'Day' of your 'Birth' anniversary.

視覚的連想

Imagine a bright cake with candles. Each candle represents a year since your birth.

Word Web

cake candles presents party age date celebration wishes

チャレンジ

Write a short paragraph about your most memorable birthday using the word at least five times.

語源

The word comes from Middle English 'birthe-day', which was a combination of 'birthe' (the act of being born) and 'day'. It replaced the Old English word 'gebryrd-dæg'.

元の意味： The day of one's birth or the anniversary of that day.

Germanic

文化的な背景

Be aware that some religions (e.g., Jehovah's Witnesses) do not celebrate birthdays. Also, some people may be sensitive about their age as they get older.

Birthdays are generally highly celebrated with parties, gifts, and cards. The 1st, 16th, 18th, and 21st are the most significant early milestones.

The song 'Happy Birthday to You' (most recognized song in English). The movie '16 Candles'. The Beatles song 'Birthday'.

実生活で練習する

実際の使用場面

Social Gatherings

Happy birthday!
Thanks for coming!
Blow out the candles!
Open your presents!

Legal/Administrative

What is your date of birth?
Please provide identification.
Age of majority.
Legal capacity.

Retail/Shopping

Birthday discount.
Gift wrapping.
Birthday card section.
Gift registry.

Workplace

Birthday leave.
Office cake.
Team lunch.
Colleague's birthday.

Digital/Social Media

Birthday notification.
Post a wish.
Birthday story.
Digital card.

会話のきっかけ

"When is your birthday, and how do you usually celebrate it?"

"What was the best birthday present you ever received?"

"Do you prefer big birthday parties or small gatherings?"

"What is a significant birthday milestone in your culture?"

"If you could spend your birthday anywhere in the world, where would you go?"

日記のテーマ

Describe your most memorable birthday celebration. Who was there and what made it special?

How do you feel about getting older each year on your birthday? Is it exciting or scary?

Write about a birthday tradition in your family that you want to pass on to others.

If you had an unlimited budget for your next birthday, what would you plan?

Reflect on how your perspective on birthdays has changed from when you were a child to now.

よくある質問

10 問

It is one word. 'Birth day' as two words is archaic and rarely used in modern English.

You should always say 'on my birthday' because it refers to a specific day.

A milestone birthday is a significant age, like 1, 13, 16, 18, 21, or any decade like 30, 40, or 50.

Yes, it is common to say 'the company's 10th birthday,' though '10th anniversary' is more formal.

It means the birthday has already passed. You say 'Happy belated birthday' if you missed the actual day.

Yes, when used as a greeting or a title, both words are usually capitalized.

It is a humorous idiom meaning to be naked (because you were born without clothes).

The plural is 'birthdays.' For example, 'Our birthdays are in the same month.'

No, 'birthday' is a noun. You cannot 'birthday' someone; you 'celebrate' their birthday.

A birthday is the day and month (recurring). A birth date includes the year (fixed).