1
at + place
表示具体地点。
She is at the library.
她在图书馆。
在；在…附近；靠近
先理解核心含义，再看它在真实句子里的用法。
在；在…附近；靠近
In, near, or in the general vicinity of a place.
She is at the library.
她在图书馆。
在(某地点)内、附近或邻近。
In, near, or in the general vicinity of (a particular place).
出席或发生在(某事件)期间。
Present or taking place during (an event).
表示发生的时间,尤指某一时刻,或从说话者角度看相对较短的一段时间。
Indicating time of occurrence, especially an instant of time, or a period of time relatively short in context or from the speaker’s perspective.
朝......方向；向......(常暗含敌意或漫不经心)。
In the direction of; towards; (often implied to be in a hostile or careless manner).
She is waiting at the bus stop.
她正在公交车站等车。
The meeting starts at 9 o'clock.
会议在九点钟开始。
He smiled at her joke.
他对她的笑话笑了。
表示具体地点。
She is at the library.
她在图书馆。
表示具体时间点。
The meeting starts at 9 AM.
会议在上午9点开始。
表示参加的活动或场合。
I met him at the concert.
我在音乐会上遇到了他。
Not this
I will meet you in the bus stop.
Use this
I will meet you at the bus stop.
对于具体地点（如公交站、学校、电影院），英语使用介词 "at" 表示位置，而汉语常用“在”不加区分，导致误用 "in"。"in" 通常表示在空间内部，而公交站是开放的点状位置，应用 "at"。
Not this
We arrived to the airport at 6 PM.
Use this
We arrived at the airport at 6 PM.
动词 "arrive" 后接地点时，必须搭配介词 "at"（较小地点）或 "in"（较大地点），不可使用 "to"。"arrive to" 是常见错误，源于汉语“到达”后可直接接地点。
Choose the next layer that will help you use at with more confidence.
Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
此刻；现在
I'm busy at the moment, can I call you back?
我现在很忙，稍后给你回电话好吗？
处于危险中
Thousands of jobs are at risk if the factory closes.
如果工厂关闭，成千上万的工作岗位将面临风险。
至少
You should wash your hands for at least twenty seconds.
你应该洗手至少二十秒。
立即；马上
Please come here at once.
请马上过来。
（用于否定句）完全；根本
She didn't seem surprised at all.
她似乎一点也不惊讶。
在手边；近在眼前
Keep a glass of water at hand when you study.
学习时在手边放一杯水。
最终；说到底
At the end of the day, what matters most is your health.
归根结底，最重要的还是你的健康。
不知所措；困惑
She was at a loss for what to say.
她不知道该说什么好。
不一致；有分歧
The evidence is at odds with his story.
证据与他的说法相矛盾。
终于，我的爱来到了。
Etta James sings this iconic line in her 1960 recording of "At Last," a song that has become a staple of weddings and films.
埃塔·詹姆斯在她1960年录制的《At Last》中演唱了这句标志性歌词，这首歌已成为婚礼和电影中的经典曲目。
Use at naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想邮箱里的 @（读作 at）：它把动作“定位”到地点、时间或方向。
语域：neutral 常见场景：日常口语、书面写作、正式场合 作为介词，“at”本身是中性词，通常在日常口语和书面写作中都很自然，没有明显的正式或非正式色彩；具体含义（地点、时间、方向等）要靠上下文判断。
These words all rhyme with “at”: the stressed vowel is /æ/ and it is followed by /t/. Watch out for lookalikes with different sounds, such as “ate” /eɪt/, “art” /ɑːrt/, and “act” /ækt/.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.