1. a period of 24 hours
一天，一晝夜（24小時）
There are seven days in a week.
一週有七天。
I'll see you in three days.
我三天後見你。
The project took five days to complete.
這個專案花了五天完成。
Day Meaning（定義、用法、例句與發音）
day
noun
快速理解
What does "Day" mean?What are 2-3 core uses of "Day"?
「day」主要指從日出到日落的時間段，也泛指24小時的一天或特定的日子。
- 1
白晝
EN: the time when the sun is shining
翻譯: 指太陽升起至落下的時間，與夜晚相對。
- 2
24小時的一天
EN: a period of 24 hours
翻譯: 指從午夜到次日午夜，作為計算時間的基本單位。
- 3
特定日子
EN: a particular date or occasion
翻譯: 指特定的日期、節日或具有特殊意義的日子。
- 4
時代、時期
EN: a period of time in the past or present
翻譯: 指歷史上或人生中的某個時期或階段。
小提醒：注意「day」在片語中可能不直指「一天」，例如「these days」意思是「現今、如今」，而非「這些天」。
發音（How to Pronounce "Day" in English）
How to pronounce "Day" in English?"Day" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Day" from YouTube Videos
Why is social media actually dumb.
meiqiii
“literally, the other day I saw this video on my recommended on YouTube.”
(1 out of 531)
Definitions（定義）
What are the definitions of "Day"?How does "Day" change by context?
2. the time when the sun is shining; daytime
白天，白晝
Bats sleep during the day and hunt at night.
蝙蝠白天睡覺，晚上獵食。
It's easier to see the path in the day.
白天比較容易看清道路。
The museum is open from 9 a.m. to 5 p.m., so you can visit during the day.
博物館從上午九點開放到下午五點，所以你可以在白天參觀。
3. a particular period of time in history or in someone's life
時代，時期，日子
In my grandfather's day, things were very different.
在我祖父那個時代，情況非常不同。
She was a famous actress in her day.
在她風光的時期，她是位著名的演員。
Those were the days when we had no internet.
那是我們還沒有網路的年代。
4. the hours of a day when you work or go to school
工作日，上學日
I have a long day at the office tomorrow.
我明天在辦公室會是漫長的一天。
The school day starts at 8:30 a.m.
學校的上課日從早上八點半開始。
After a hard day's work, I just want to relax.
辛苦工作一天後，我只想放鬆一下。
5. a specific date or anniversary
特定日期，紀念日
What day is your birthday?
你的生日是哪一天？
The wedding day is set for June 10th.
婚禮日期定在六月十日。
Today is a great day for a picnic.
今天是野餐的好日子。
Grammar & Patterns（句型）
What are common sentence patterns for "Day"?How to make natural sentences with "Day"?
| Pattern | Meaning | Example |
|---|---|---|
| all day | 整天 | I worked on the project all day. (我整天都在做這個專案。) |
| day after day | 日復一日 | Day after day, the same routine continues. (日復一日，同樣的日常持續著。) |
| day and night | 日日夜夜 | The store is open day and night. (這家商店日日夜夜都營業。) |
| one day | 有一天（指未來或過去） | One day, I will travel the world. (有一天，我會去環遊世界。) |
| the other day | 前幾天 | I saw her at the market the other day. (我前幾天在市場看到她。) |
| by day | 在白天 | He works in an office by day. (他白天在辦公室工作。) |
| make someone's day | 讓某人開心一整天 | Your kind words really made my day. (你友善的話語真的讓我開心了一整天。) |
| have a bad day | 度過糟糕的一天 | I'm sorry I'm grumpy; I had a bad day at work. (抱歉我脾氣不好；我今天工作很不順。) |
| day off | 休假日 | I'm looking forward to my day off this Friday. (我很期待這週五的休假日。) |
用法說明
How is "Day" different from similar structures?What usage mistakes are common with "Day"?
day vs. days
- day 作為可數名詞，指特定的「一天」或「一日」，常與
a,the,this,that,every等詞連用。 - days 作為複數形式，泛指「時期」、「時代」或一段不特定的多日時光，常與
these,those,in,for等詞連用。 - 在表示「在白天」這個概念時，固定使用單數的 day，搭配介系詞
during或in。 - 片語
one day可指「（過去的）某一天」或「（未來的）總有一天」，而some day通常僅指「未來的某一天」。 EN: I'll never forget the day we first met. 翻譯: 我永遠不會忘記我們初次見面的那一天。
EN:I miss the carefree days of my childhood.
翻譯:我很懷念童年時那些無憂無慮的日子。
EN:Owls usually sleep during the day.
翻譯:貓頭鷹通常在白天睡覺。
EN:She hopes to visit Paris some day.
翻譯:她希望有一天能去巴黎看看。
總結建議
使用時需根據是指特定單日、一段時期還是「白天」這個概念，來選擇單數的 day 或複數的 days。
易混淆對比
What is the difference between "Day" and similar words?How to choose "Day" vs alternatives?
day vs date
「day」指一天24小時的時間單位或白天；「date」指特定的日曆日期（年/月/日）。
day vs daytime
「day」可指完整24小時或白天；「daytime」僅指日出到日落的白天時段。
day vs 24 hours
「day」常作為自然或日曆單位；「24 hours」強調精確的24小時時長。
口語用法
How is "Day" used in spoken English?What is the spoken vs formal difference for "Day"?
引述
在轉述對話或想法時，用來引述特定的一天。 EN: She was like, "What a day!" and then just collapsed on the sofa. 翻譯: 她當時就說：「今天真是夠嗆！」然後就直接倒在沙發上了。
EN:I remember him saying, "Mark your calendar, that day is going to be huge for us."
翻譯:我記得他說：「把那天標記起來，對我們來說會是重要的一天。」
語氣強調
與其他詞組合，用來強調某一天非常特別、漫長或糟糕。 EN: Ugh, today has been one of those days where nothing goes right. 翻譯: 唉，今天真是諸事不順的一天。
EN:That was the best day ever! We have to do it again sometime.
翻譯:那真是最棒的一天了！我們一定要找時間再來一次。
停頓填充
在思考或組織語句時，用作短暫的填充詞，常與 "the" 或 "that" 連用。 EN: So, on the day... uh... the day of the party, remember to bring snacks. 翻譯: 所以，在...呃...派對那天，記得帶點心來。
EN:It was just, you know, one of those days where... the day just gets away from you.
翻譯:就是，你知道，那種...時間不知不覺就溜走的日子。
正式寫作注意：上述口語用法，特別是「停頓填充」和過於隨意的「引述」（如 "She was like..."），在正式報告、學術論文或商業書信中應避免使用。請改用更精確、結構完整的句子來描述時間或事件。
常見短語
What common collocations use "Day"?What fixed phrases with "Day" should I remember?
all day
all day (long)
一整天
the other day
the other day
前幾天
day after day
day after day
日復一日
call it a day
call it a day
收工；結束一天的工作
day in, day out
day in, day out
天天如此；持續不斷地
make someone's day
make someone's day
讓某人非常開心
from day one
from day one
從一開始
常見錯誤
What are common mistakes with "Day"?Which "Day" sentences look correct but are wrong?
×I will finish it in two days later.
✓I will finish it in two days.
不要同時使用 'in' 和 'later'，因為 'in two days' 已經表示「兩天後」。
×I work from day to night.
✓I work from morning till night.
英文習慣說 'from morning till/until night' 或 'day and night'（日以繼夜）。'from day to night' 不是自然搭配。
×I met her one day before.
✓I met her the day before.
指「前一天」時，通常使用定冠詞 'the'（the day before）。'one day before' 聽起來不自然，除非特別強調「剛好一天前」。
×What day is today? It's 15th.
✓What is the date today? It's the 15th.
'What day is today?' 問的是星期幾（Monday, Tuesday）。問具體日期（幾月幾號）應該用 'What is the date today?'。
×I will go there in next day.
✓I will go there the next day.
與 'tomorrow' 不同，'the next day' 指過去或未來某個時間點的「隔天」，前面必須有定冠詞 'the'，且不使用 'in'。
×We have a meeting in this day.
✓We have a meeting today.
'this day' 在現代英語中極少單獨使用，通常用 'today' 表示「今天」。'this day' 主要出現在固定片語如 'to this day'（直到今天）或正式、文學性語境中。
詞形變化
What are the word forms of "Day"?What are tense/participle forms of "Day"?