responsibleness

常用用法

be responsible for表示“對……負責任”，它的主語不一定是人，這種用法在美式英語中較常見。The cold weather is responsible for his absence. 冷空氣對他的缺席有一定的責任。
the person responsible表示“負責人”。I want to see the person responsible. 我想見負責人。
responsible后面可跟that從句。The writer of a letter is responsible that it will be understood by its recipient. 寫信的人有責任讓收信人讀懂信的意思。
一般來說，be responsible to后跟人，指“對某人負責”，而be responsible for后跟物，指“對某事負責”。