.一 开头礼貌用语1.开头语-感谢对方的来信（间接表明已收到对方来信）a. Thank you for your letter of/datedconcerning/regardingb. Thank you for your letter ofinquiring about our company and our products.2.确认收到的礼貌用语a. We are happy to receive your letter ofb. We are very glad/pleased to receive your enquiry/inquiry ofc. We are in receipt of your letterd. Im greatly appreciated for your lettere. Please excuse my late reply to your very friendly letter of( March 1st.)f. I apologize to you for my delay i
