1
a/an + (adj) + day
day用作可数名词，前面可加不定冠词和形容词。
It was a rainy day.
那是一个下雨天。
一天；一昼夜；日
days — plural of day
先理解核心含义，再看它在真实句子里的用法。
一天；一昼夜；日
a period of 24 hours; a calendar day; the time a planet takes to rotate once
It was a rainy day.
那是一个下雨天。
太阳在地平线上方并照亮天空的时间
The time when the Sun is above the horizon and it lights the sky.
地球自转一周的时间
time for Earth to make a complete rotation on its axis
等于或几乎等于完整昼夜周期的时间段,长达24小时
A period of time equal or almost equal to a full day-night cycle, being 24 hours long.
某个时间点或时期
some point or period in time
I work eight hours a day.
我一天工作八小时。
AI contextual example
We spent the whole day at the beach.
我们在海滩上度过了一整天。
AI contextual example
It rained every day last week.
上周每天都下雨。
AI contextual example
two days later they left
两天后他们离开了。
WordNet
day用作可数名词，前面可加不定冠词和形容词。
It was a rainy day.
那是一个下雨天。
表示具体某一天时通常用介词on。
See you on the first day.
第一天见。
固定短语，表示连续不断。
The machines run day and night.
机器日夜运转。
Not this
What day is today? (asking for date)
Use this
What's the date today?
误将 'day' 用于询问具体日期；英语中 'what day' 问星期，问日期用 'what date'。
Not this
I will meet you in that day.
Use this
I will meet you on that day.
'day' 前用介词 'on' 表示具体某一天，而非 'in'（用于较长时段）。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
每天
He goes for a run every day.
他每天跑步。
有一天
One day, I will visit Paris.
有一天，我会去巴黎。
第二天
She called me the next day.
她第二天给我打了电话。
休息日
I have a day off tomorrow.
我明天休息一天。
一日游
We took a day trip to the beach.
我们去海滩一日游。
整天
It rained all day.
下了一整天的雨。
收工；结束一天的工作
After finishing the report, she decided to call it a day.
完成报告后，她决定收工。
日复一日；天天
He works in the factory day in, day out, never taking a vacation.
他日复一日地在工厂工作，从不休假。
前几天；不久前的某一天
I saw your brother in the park the other day.
前几天我在公园看到你哥哥了。
及时行乐。抓住今天，孩子们。让你们的人生变得非凡。
In the movie Dead Poets Society, the teacher John Keating inspires his students to live life to the fullest.
在电影《死亡诗社》中，老师约翰·基廷激励学生充分享受生活。
昨天是历史，明天是谜团，但今天是礼物。这就是为什么它被称为“当下”。
Master Oogway from Kung Fu Panda teaches Po about the importance of living in the moment.
《功夫熊猫》中的乌龟大师教导阿宝活在当下的重要性。
发长 /eɪ/ 音 (如 day, play)
Use days naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
将 'day' 联想为 '得'，得到阳光的时段就是白天。
通常，'day' 表示一天24小时的时间单位，适用于各种正式和非正式场合。
可数名词，表示24小时的一段时间。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.