In On At 的用法
When English speakers talk about time and place, there are three little words that often come up: in, on, and at.
当说英语的人谈论时间和地点时，经常会出现三个小单词:in、on和at。
These common words are prepositions that show a relationship between two words in a sentence.
这些常用词是表示一个句子中两个词之间关系的介词。
But these little two-letter prepositions seem to create confusion. so here are guidelines to help you use the right preposition every time!
但是这些仅有两个字母的介词似乎会造成混淆。所以这里有一些参考来帮助你每次使用正确介词!
How to use in, on, and at.
in, on和at怎么用
Two of the most common contexts in which in, at, and on are used involve identifying where someone or something is (place) and when something happened (time).
in、at和on的两个最常见的语境涉及到确定某人或某物的位置(地点)和某事发生的时间(时间)。
When these prepositions should be used in numerous situations of time and place.
这些介词在不同时间和地点的情况下应该如何使用。
In, on & at as prepositions of place.
In, on 和at作为地点介词
We use “at” when it refers to a very specific point, location, or place. For example:
当它指一个非常具体的点、位置或地方时，我们用“at”。例如
·I'm working at the bakery.·
我在面包店工作。
·Someone is at the door.
有人在门口。
When it refers that “sth is on the surface” we use “on”. In addition, if a street name or river follows, we also use “on". For example:
当它指“某物在表面上”时，我们用“on”。另外，如果后面有街道或河流的名字，我们也用on。例如:
·The painting is on the wall.
画挂在墙上。
·I live on Grove Street.
·我住在格罗夫街。
We use “in” when it refers to an enclosed space, or a general area that contains borders or boundaries. For example:
当它指一个封闭的空间，或包含边界的一般区域时，我们用“in”。例如
·I left my wallet in the car.
·我把钱包落在车里了。
·I'm staying in France this summer.
·今年夏天我将呆在法国。
In, on & at as prepositions of time.
In, on at作为时间介词
When referring to Specific Times, like Hours/ minutes of the day or Times of the day (e.g. Dawn, midnight, noon, sunrise, bedtime), we use “at”. For example:
当提到特定的时间，比如一天的小时/分钟或一天的时间(例如黎明，午夜，中午，日出，就寝时间)，我们用“at”。例如
.We'll meet you at 6 o'clock.
·我们6点和你见面
I hate driving at night.
·我讨厌晚上开车。
When it refers to Specific Days and Dates, like Dates, Days of the week, Weekends, Holidays(e.g., New Year's Eve, Independence Day, Halloween), Birthdays, we usually choose the preposition “on”. For example:
当它指特定的日子和日期时，如日期，一周中的几天，周末，假日(如除夕，独立日，万圣节)，生日，我们通常选择介词on。例如
·His birthday is on May 5th.
·他的生日是5月5日。
·They work out on Mondays.
·他们在周一锻炼。
And we use “in”when we refer to more general times, like months, seasons, years, centuries, time periods, past/future, future times, and also, times of the day. For example:
我们用“1n”指代更大致的时间，比如月份、季节、年世纪、时间段、过去/未来、未来时间，还有某一天中的时间。例如:
·We ski a lot in the winter.
·我们在冬天经常滑雪。
·It was dark in the morning.
早晨天黑了。
以上内容来源六分钟英语侵删