英语应用文写作模板（信函Letter）一、咨询信 写作模式：写信目的+介绍背景+询问详情+表示谢意，期盼回复Dear Sir or Madam，As a , I am writing to ask if .I，d appreciate it if you could /I will be looking forward to hearing from you soon.（两句皆可） Truly yours， Xiao Xing二、 投诉信 写作模式：提出投诉+具体投诉内容+要求Dear Sir or Madam，I write this to place a complaint against / I venture to write to complain about （两句皆可） the quality of I bought . During has been in my possession, probl
