Explanation at your level:
Seven is a number. You use it to count things. For example, you can have seven pens or seven books. It comes after six.
We use seven to talk about quantity. You might say, "I have seven cousins" or "The store opens at seven." It is a very common number in daily life.
In this level, you will see seven used in time expressions and measurements. It is also common in idioms like "seven days a week," meaning all the time. It is a stable, reliable number in English.
At this level, you'll encounter seven in more figurative contexts. Phrases like "seventh heaven" describe high emotion, while "at sixes and sevens" describes organizational chaos. It shows how numbers integrate into cultural vocabulary.
Advanced users often use seven in academic or historical contexts. You might discuss the "seven liberal arts" or the "seven deadly sins." The number carries symbolic weight in literature and philosophy, often representing perfection or spiritual completion.
At the mastery level, seven is analyzed for its etymological significance and its role in human cognition. It is often cited in psychology regarding the "magic number seven" in short-term memory capacity. It serves as a bridge between simple arithmetic and complex cultural symbolism.
30秒でわかる単語
- Seven is a cardinal number.
- It is a prime number.
- It is often considered lucky.
- It follows six and precedes eight.
Hey there! Seven is a fascinating number that sits right between six and eight. It is a cardinal number, which means we use it to count objects or express quantities.
In mathematics, seven is a prime number, meaning it can only be divided by one and itself. Because of this unique property, it has held a special place in human culture for thousands of years. Whether you are counting days of the week or colors in a rainbow, you are using this powerful little number!
The word seven has deep roots in history. It traces back to the Proto-Indo-European word *septm. This evolved into the Old English seofon, which is very similar to how we say it today.
You can see its relatives in other languages too, like the Latin septem, the German sieben, and the French sept. It has been a lucky number in many societies for centuries, often associated with mystery and completion, likely because ancient astronomers observed seven visible 'wandering stars' in the night sky.
Using seven is straightforward. It is used as an adjective (e.g., "seven cats") or a noun (e.g., "the number seven"). It is completely neutral in register, meaning you can use it in a casual chat or a formal math paper.
Common collocations include time-based phrases like "seven days a week" or "seven o'clock." It is also frequently used in lists or when describing groups, such as "seven wonders" or "seven seas."
We love using seven in idioms!
- Seventh heaven: To be extremely happy. Example: "She was in seventh heaven after the promotion."
- Seven-year itch: A period of tension in a relationship. Example: "They were worried about the seven-year itch."
- Seven seas: All the oceans of the world. Example: "He sailed the seven seas."
- At sixes and sevens: To be in a state of confusion. Example: "The office was at sixes and sevens today."
- Seven-day wonder: Something that is popular for a very short time. Example: "The new toy was just a seven-day wonder."
Grammatically, seven is simple. It does not change form for pluralization because it is already a quantity. When used as a noun, it takes the article 'the' (e.g., "The seven was lucky").
Pronounced as /ˈsɛvən/ in both British and American English, the stress is on the first syllable. It rhymes with words like heaven, leaven, and steven. Remember to clearly articulate the 'v' sound in the middle!
Fun Fact
It is a prime number.
Pronunciation Guide
Clear 's' and 'v' sounds.
Similar to UK, often with a slight flap 't' if it were 'seventeen'.
Common Errors
- Swallowing the 'v' sound
- Mispronouncing the 'en' ending
- Adding an extra syllable
Rhymes With
Difficulty Rating
Very easy
Very easy
Very easy
Very easy
What to Learn Next
Prerequisites
Learn Next
上級
Grammar to Know
Cardinal Numbers
I have seven.
Ordinal Numbers
The seventh day.
Pluralization
Seven cats.
Examples by Level
I have seven apples.
I possess 7 apples.
Number before noun.
There are seven days in a week.
She is seven years old.
I see seven birds.
He has seven brothers.
The bus arrives at seven.
I need seven dollars.
Count to seven please.
The meeting starts at seven.
I walked seven miles today.
There are seven colors in the rainbow.
She bought seven tickets.
He has seven pets at home.
The seventh house on the left is mine.
I read seven pages.
Seven people are waiting.
The project will take seven weeks.
He works seven days a week.
She has seven different hobbies.
They live seven blocks away.
The temperature dropped seven degrees.
I have seven missed calls.
Seven out of ten people agree.
The movie is seven minutes long.
She was in seventh heaven when she won.
The situation is at sixes and sevens.
He is a seven-figure earner.
The seven-year itch is a common concept.
They are seven years apart in age.
The committee has seven members.
It is a seven-part series.
Seven is considered a lucky number.
The seven wonders of the ancient world are iconic.
The seven deadly sins are a common literary theme.
He felt like he was on cloud seven.
The seven-fold increase was unexpected.
The seven-year cycle is well-documented.
The seven seas have been explored.
The seven-day wonder faded quickly.
Seven is a prime number.
The seven-fold path is central to the philosophy.
His seven-year tenure was marked by success.
The seven-note scale is fundamental to music.
Seven is often viewed as a mystical integer.
The seven-year famine was a historical event.
Seven is the seventh prime number.
The seven-pointed star is a specific symbol.
Her seven-decade career is legendary.
よく使う組み合わせ
Idioms & Expressions
"Seventh heaven"
State of extreme happiness
She was in seventh heaven.
casual"At sixes and sevens"
In a state of confusion
The team was at sixes and sevens.
casual"Seven-year itch"
A period of boredom in a relationship
They survived the seven-year itch.
casual"Seven-day wonder"
Short-lived popularity
That trend was a seven-day wonder.
casual"Seven seas"
The whole world
He sailed the seven seas.
literary"Seven-fold"
Seven times as much
The profit grew seven-fold.
formalEasily Confused
Sounds similar
Seventeen is 17, seven is 7.
I have seven, not seventeen.
Sounds similar
Seventy is 70.
He is seventy, not seven.
Ordinal vs Cardinal
Seventh is a position.
The seventh day.
Starts with 'sev'
Several means 'some'.
Several people, not seven people.
Sentence Patterns
Subject + verb + seven + noun
I have seven books.
At + seven
Meet me at seven.
Seven + of + pronoun
Seven of them left.
The + seventh + noun
The seventh day is Sunday.
Seven + times + as + adjective
It is seven times as large.
語族
Nouns
Adjectives
関連
How to Use It
10
Formality Scale
よくある間違い
Numbers don't need apostrophes for plurals.
Redundant to say 'in the morning' with AM.
No hyphens when used after the noun.
Seven is plural.
Apostrophe denotes possession, not plural.
Tips
Rhyme Time
Remember: Seven rhymes with Heaven.
Counting
Use it for counting objects.
Luck
It is often a lucky number.
Plurals
Numbers don't need apostrophes.
Clear V
Say the 'v' clearly.
Avoid Apostrophes
Don't write seven's.
Prime
It is a prime number.
Flashcards
Use flashcards for numbers.
Time
Used for time often.
Agreement
Seven always takes a plural noun.
Memorize It
Mnemonic
Seven rhymes with Heaven.
Visual Association
A rainbow with seven colors.
Word Web
チャレンジ
Count to seven in three different languages.
語源
Old English
Original meaning: The number 7
文化的な背景
None, universally accepted.
Seven is often considered a lucky number in Western culture.
Practice in Real Life
Real-World Contexts
At school
- Seven students
- Seven subjects
- Seven o'clock class
At work
- Seven days a week
- Seven-hour shift
- Seven departments
Travel
- Seven continents
- Seven-day trip
- Seven miles away
Math
- Seven is prime
- Seven plus one
- Seven times seven
Conversation Starters
"What is your lucky number?"
"How many days are in a week?"
"Do you have seven of anything?"
"What happens at seven o'clock?"
"Why is seven special?"
Journal Prompts
Write about a time you had seven of something.
Why do you think seven is lucky?
Describe your typical day at seven o'clock.
If you had seven wishes, what would they be?
よくある質問
8 問Yes, it is.
It has historical and religious significance.
S-E-V-E-N.
Yes, it represents more than one.
Historically September, but now July.
Yes, it is a basic integer.
Yes, it is a single-digit number.
Sept.
自分をテスト
There are ___ days in a week.
A week has 7 days.
Which is a prime number?
Seven is only divisible by 1 and itself.
Seven is an odd number.
Seven is not divisible by 2.
Word
意味
Idiom matching.
Correct sentence structure.
スコア： /5
Summary
Seven is the number between six and eight, holding significant cultural and mathematical importance.
- Seven is a cardinal number.
- It is a prime number.
- It is often considered lucky.
- It follows six and precedes eight.
Rhyme Time
Remember: Seven rhymes with Heaven.
Counting
Use it for counting objects.
Luck
It is often a lucky number.
Plurals
Numbers don't need apostrophes.
例文
She has seven cousins.
Related Content
文脈で学ぶ
この単語を他の言語で
関連フレーズ
generalの関連語
about
A1'about'は、何かの話題について話すときや、おおよその量を表すときに使います。
above
A2何かの真上にある、より高い位置を示します。
accident
A2予期せず起こる悪い出来事で、損害や怪我につながることがあるものです。
action
A2目標を達成するために何かを実際に行うことだよ。
after
A2'after'は、時間的または場所的に、何かの後であることを意味します。
afterward
A2At a later or subsequent time.
again
A2'again'は、何かがもう一度起こる、繰り返されることを意味します。
aged
B1ある特定の年齢であること。人や物の年齢を表す時に使うよ。
alive
A2死んでおらず、生命活動をしている状態。
all
A2'all'は、物事の全体や、一つ残らずすべてを指します。
