be responsible for 和 be responsible to 的区别主要体现在以下方面：

一、核心含义差异

be responsible for

表示“对某事或某人负责”，强调对结果或对象承担责任。例如：

- The project manager is responsible for the project's success.（项目经理对项目的成功负责）

- She is responsible for her family's well-being.（她对家庭幸福负责）

be responsible to

表示“对某人负责”，强调对人的责任或义务。例如：

- The company is responsible to its shareholders.（公司对股东负责）

- Teachers are responsible to educate students.（教师有教育学生的责任）

二、用法区别

be responsible for后接名词/动名词：

The company is responsible for its environmental impact.（公司对环境影响负责）

She is responsible for completing the task.（她负责完成任务）

be responsible to后接名词/动名词：

The manager is responsible to the board of directors.（经理对董事会负责）

The government is responsible to protect its citizens.（政府有保护公民的责任）

三、侧重点不同

be responsible for侧重于“结果导向”，强调因行为导致的结果需承担责任。- be responsible to侧重于“义务导向”，强调因角色或关系产生的责任。 四、错误用法示例

将 be responsible for改为 be responsible to会导致语义错误。例如：

错误：

The teacher is responsible to the students.

正确：The teacher is responsible to the school administration.

总结

两者核心区别在于：

for强调对“事”的责任（如完成任务、解决问题）；

to强调对“人”的责任（如对上级、社会）。需根据语境选择合适的搭配以确保语义准确。