"be born in" 强调出生地点，后接地点名词，用于询问或表达具体地点的出生情况。"be born on" 强调出生日期，后接日期名词，用于询问或表达具体的出生日期。"be born at" 使用较少，无明确的释义区别。它们在释义、用法、使用环境、影响范围和形象上存在一些区别，具体内容如下所示。
1. 释义区别：
"be born in" 表示某人出生于某个地方，强调出生地。"be born on" 表示某人在某个日期出生，强调出生日期。"be born at" 没有明确的释义区别，不常用。
例句：
He was born in New York. (他出生在纽约。)
She was born on May 10th. (她在5月10日出生。)
They were born at different times. (他们在不同时期出生。)
2. 语法区别：
"be born in" 后面接表示地点的名词或名词短语。"be born on" 后面接表示日期的名词或名词短语。
例句：
She was born in a small town. (她出生在一个小镇上。)
He was born on a sunny day. (他在一个阳光明媚的日子出生。)
3. 用法区别：
"be born in" 用于询问或表达地点的出生情况。"be born on" 用于询问或表达具体的出生日期。
例句：
Where were you born? (你在哪里出生的？)
She was born on January 1st, 1990. (她在1990年1月1日出生。)
4. 使用环境区别：
"be born in" 和 "be born on" 在正式场合和书面语中更为常见。"be born at" 不太常用，使用较少。
例句：
The famous actress was born in Paris. (那位著名女演员出生于巴黎。)
I was born on a Tuesday. (我在一个星期二出生。)