1. Its a Pleasure 用于当别人对你说 Thank you. 时,即“不用谢”。例如: Thank you for coming to see me . Its a pleasure.谢谢你来看我不用谢。 2. With pleasure。用于别人求你做某事,你很乐意去做的时候。例如:Could you post the letter for me ? With pleasure. 简单讲,Its a pleasure 用于事情发生之后,而 with pleasure 用于事情发生之前。