sorry to do是还没发生或者即将发生的事
sorry for doing是已经发生的事
比如:
I'm sorry to tell you that we don't have this kind of service
I's sorry for having caused you so much trouble
sorry to do是还没发生或者即将发生的事
sorry for doing是已经发生的事
比如:
I'm sorry to tell you that we don't have this kind of service
I's sorry for having caused you so much trouble