-
used to say where something/somebody is or where something happens 在（某处） at the corner of the street 在街角 We changed at Crewe. 我们在克鲁换的车。 🔊🔊 They arrived late at the airport. 他们晚到了机场。 🔊🔊 At the roundabout take the third exit. 在环岛处走第三个出口。 🔊🔊 I'll be at home all morning. 我一上午都在家。 🔊🔊 She's at Tom's (= at Tom's house). 她在汤姆家中。 🔊🔊 I met her at the hospital. 我在医院遇见了她。 🔊🔊 How many people were there at the concert? 音乐会上有多少人？ 🔊🔊
-
used to say where somebody works or studies 在（表示学习或工作地点） He's been at the bank longer than anyone else. 他在银行工作的时间比任何人都长。 🔊🔊 She's at Yale (= Yale University). 她在耶鲁大学。 🔊🔊
-
used to say when something happens 在（某时间或时刻） -
used to state the age at which somebody does something 在…岁时 -
in the direction of or towards somebody/something 向；朝 used after a verb to show that somebody tries to do something, or partly does something, but does not succeed or complete it （用于动词后，涉及未做成或未做完的事） -
used with adjectives to show how well somebody does something （与形容词连用，表示能力）在…方面 -
used to show a rate, speed, etc. （用于速度、比率等）以，达 -
used to state the distance away from something 在…远；从相隔…远的地方 -
used to show the situation somebody/something is in, what somebody is doing or what is happening 处于…状态 - at somebody’s/something’s best/worst, etc.
used to say that somebody/something is as good, bad, etc. as they can be 处于最佳（或最差等）状态；在全盛（或谷底等）时期 -
used with adjectives to show the cause of something （与形容词连用）因为，由于，对… - (formal)
in response to something 应…（而）；响应；回答 - (North American English)
used when giving a phone number （提供电话号码时用） - 🔊/æt/🔊/æt/(
computing 计算机 the symbol (@) used in email addresses （用于电子邮箱地址中的符号 @）
Word OriginOld English æt, of Germanic origin; related to Old Frisian et and Old Norse at, from an Indo-European root shared by Latin ad ‘to’.
Idioms
at that
be at it again
where it’s at