为什么是thank you for not smoking而不用no?

为什么是thank you for not smoking而不用no? 为什么是thank you (for) your letter Thank you for your help.能不能回答是No,thanks. thank you for your nice present.______为什么是I'M VERY GLAD YOU LIKE IT而不是YOU'RE WELCOME no thank you 音译 Thank you and no Thank you for you Thank you very much for helping us.答句为什么是Not at all?You are so kind不行吗? 什么是举一反三?THANK YOU no problem用法-----thank you for your help .-----------NO PROBLEM.problem 的意思 Thank for you help. thank you for the Thank you for thank you for your thank you for the Thank you for your thank you for Thank you for this