终于明白英语地点介词at、on和in的用法区别了

英语介词 at、on和in可以表示地点（place），但他们的用法却往往容易混淆。

三者的主要区别如下。

AT

1. At：把某个位置或地点看作一个点（point）

I was sitting at my desk. （桌子是我坐的一个点）

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2. At：把公司或工作场合看作活动地点

How many people are working at Microsoft? （微软公司是工作的场所）

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3. At：有很人参与的活动场所

Were you at Lisa's party? (at the cinema/at the theatre)（聚会、电影院、剧院都有很多人观看）

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4. At：学校，如school、college、university

She always did well at school.

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5. At：地址

They once lived at number 12 South George's Street.

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6. At：在我们获得各种服务的公共场地，如理发店、医院、商店、饭店等

I can't meet at four. I'll be at the hairdresser's until five.

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ON

1. On：在..上面

I know I left my wallet on the table.

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2. On：沿着道路或河流，或海边或湖边的位置

Dublin is on the east coast of Ireland.

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3. On：建筑物的楼层

They live on the 15th floor!

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4. On：在公共交通上

I was on the train when she phoned.

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IN

1. In：在..里面

I know my book is somewhere in this room.

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2. In：当把工作场地看做一个实体建筑时

She works in an open-plan office.

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3. In：在课堂上

He found it difficult to concentrate in class.