1、responsible to sb. for sth.: 就某事对某人负责
I am responsible to him for the safety of his family.
我要向他负他一家人安全的责任.
2、be responsible to sb. 对...负责
We must be responsible to the people.
我们应该对人民负责.
3、be responsible to do sth. 负责做...某事
To be responsible to handle all RGBS.
负责售前退货的处理工作.
4、be responsible for sth.: 对...某事负责
Who's responsible for the terrible mess?
谁应该对这种混乱负责?