at three／three o'clock 在三点 at a quarter to six 六点差一刻 at noon 在中午，at night 在夜晚 at midnight 在半夜 at breakfast／lunch／supper 在吃早饭／午饭／晚饭时 at this time of day 在每天这个时候 at a time(在某时), at a wedding(婚礼), at all times(一直), 随时，任何时候：at any moment, at any time, 在什么节日：at Christmas (在圣诞节), at Easter (在复活节), 在黎明：at dawn, at daybreak, at sunrise (日出时), 正午，在中午 at noon at dark (天黑时), at dusk, at nightfall(在黄昏), at sunset (日落时) 夜里，半夜 at night, at midnight, at first sight,(一见到)——fall in love at first sight 一见钟情 at first, at last, at dinner-time,at present (最近), at six clock, at that moment, at that time, at the age of, at the beginning of , at the correct time, at the end of, at the last minute, at the moment, at the present stage at the same time, at the stage(眼下) at the start, at the time being, at the time of, at the very start, at this point(此时), at this season, at this time of day, at times(有时）。
at the end of the runway 在跑道的尽头 * at the corner of the street 在街道的拐角 * go in at the side door 从旁门进入 * change at Didcot 在迪德考特转换 * arrive at the airport 到达飞机场 * At the roundabout take the third exit。
在环状交叉路口从第三条出路驶出。 * I'll be at home (ie not at work, school, church, etc) all morning。 我一上午都在家。 She's at the theatre, cinema, etc, ie watching a play, film, etc。
她在戏院里﹑ 电影院里等（看戏﹑ 看电影等） * She works at the hospital。 她在医院工作。 * He's at (ie staying at) the Grand Hotel。 他住在格兰德大旅馆。 at a concert, conference, match, etc 参加音乐会﹑ 会议﹑ 比赛等。
They're at Keith's。 他们在基思家。 * I was at my father's。 我先前在我父亲处。 * They didn't have any bread at the baker's。 面包店里那时没有面包。
He's been at the bank longer than anyone else。 他在银行工作时期比别人都长。 * I'm at the head office。 我在总公司工作。 * her three years at Oxford 她在牛津三年求学期间 。
She likes to eat fruit at breakfast 。 早餐她喜欢吃水果.
1. I'll be at home all morning. 我一上午都在家. 2. She works at the hospital. 她在医院工作. 3. What are you doing at the weekend? 你在周末做什麽? 4. I'm good at it. 我做这个很在行。 5. I watch TV till ten at night. 我晚上看电视看到10点。
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