Once
一度だけ。ただ一回、または一度きりの機会。
Use 'once' to describe a single occurrence or a state that existed in the past.
30秒でわかる単語
- Used to indicate an event happened a single time.
- Used to describe a situation that existed in the past.
- Commonly used to begin fairy tales and narratives.
Summary
Use 'once' to describe a single occurrence or a state that existed in the past.
- Used to indicate an event happened a single time.
- Used to describe a situation that existed in the past.
- Commonly used to begin fairy tales and narratives.
Use once for past states
Use 'once' to describe a previous job or hobby. For example: 'I was once a professional athlete.'
Avoid confusing once with one
Remember that 'once' is an adverb of frequency, while 'one' is a number. Do not say 'I went to the store one time' if you can say 'I went to the store once.'
Storytelling traditions
In English literature, 'Once upon a time' is the standard way to begin traditional folk tales. It signals to the listener that the story is set in an indefinite past.
例文
4 / 4I visited London once.
He was once the CEO of this company.
Once you try this cake, you will love it.
The data was once considered accurate.
語族
覚え方のコツ
Think of the word 'once' as 'one-ce'—the 'one' is inside the word! It means exactly one time.
Overview
'Once' is a versatile adverb that primarily functions as a temporal marker indicating singularity. It serves to quantify frequency (doing something one time) or to establish a past temporal reference point. Usage Patterns: When used to denote frequency, it often appears at the beginning or end of a clause (e.g., 'Once, I visited Paris'). When used to indicate a past state, it typically appears mid-sentence before the main verb (e.g., 'He was once a teacher'). Common Contexts: It is highly frequent in storytelling, where it serves as the classic opening word for fairy tales ('Once upon a time'). In professional settings, it is used to describe former roles or past business entities. Similar Words Comparison: 'Once' differs from 'one time' in that 'once' is more idiomatic and flows better in natural speech. While 'formerly' implies a change in status, 'once' highlights the singular nature of that past experience.
使い方のコツ
Use 'once' to avoid repeating 'one time,' which can sound slightly clunky. It is perfectly acceptable in both professional reports and casual emails. When using it as a conjunction, ensure the verb tense in the following clause matches the context.
よくある間違い
Students often use 'one time' instead of 'once,' which is grammatically correct but less natural. Another error is using 'once' to mean 'when' in a temporal sense, though it is specifically for conditions. Avoid using it as a synonym for 'always.'
覚え方のコツ
Think of the word 'once' as 'one-ce'—the 'one' is inside the word! It means exactly one time.
語源
Derived from the Middle English 'ones,' which comes from the Old English 'anes,' meaning 'of one.' It reflects the evolution of counting and temporal sequence in Germanic languages.
文化的な背景
The phrase 'Once upon a time' is iconic in Western culture, serving as the universal signal that a fictional story is beginning. It highlights how the language uses this simple adverb to frame narrative time.
例文
I visited London once.
everydayHe was once the CEO of this company.
formalOnce you try this cake, you will love it.
informalThe data was once considered accurate.
academic語族
よく使う組み合わせ
よく使うフレーズ
once in a while
once and for all
よく混同される語
'One' is a number representing a single unit. 'Once' is an adverb indicating frequency.
文法パターン
Use once for past states
Use 'once' to describe a previous job or hobby. For example: 'I was once a professional athlete.'
Avoid confusing once with one
Remember that 'once' is an adverb of frequency, while 'one' is a number. Do not say 'I went to the store one time' if you can say 'I went to the store once.'
Storytelling traditions
In English literature, 'Once upon a time' is the standard way to begin traditional folk tales. It signals to the listener that the story is set in an indefinite past.
自分をテスト
Choose the correct word to complete the sentence.
I have been to Japan ___ in my life.
We use 'once' to describe frequency of an event.
スコア： /1
よくある質問
3 問Yes, 'once' can function as a conjunction meaning 'as soon as.' For example, 'Once you finish your homework, you can go outside.'
It is neutral and commonly used in both formal writing and casual conversation. Its tone depends entirely on the surrounding context.
Not necessarily. It simply confirms that the event occurred one time, leaving the possibility of future repetition open unless specified otherwise.
文脈で学ぶ
この単語を他の言語で
関連語彙
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。
