小编为了方便大家更好的备战2020考研英语，特为大家带来“2020考研英语写作：投诉信”希望大家能在平时多加温习，牢牢记住。预祝大家备考顺利!下面就请大家跟随小编一起来看看吧~
　　① 引言
　　I am writing to express my dissatisfaction about…
　　I write to make a complaint about…
　　I would like to draw your attention to the problem that…
　　I feel sorry to trouble you but I am afraid I have to request you to take corrective actions concerning…
　　I regret to inform you it absolutely disappointed me that …
　　② 展开
　　To be frank, in the first few weeks, I got on well with… However, recently, I have discovered that…
　　This has put us to great inconvenience. Therefore, I am returning... and would greatly appreciate if you could replace it.
　　I am totally upset with… and can not tolerate anymore.
　　To my great regret, they become troublemakers and affect my life seriously.
　　Honestly, at the beginning, I was quite satisfied with your service. To my great disappointment, yesterday I found that…
　　③ 结尾
　　To solve this problem, some remedial actions should be taken before things get worse.
　　To solve the unpleasant matter, I suggest making the following changes.
　　I shall be grateful if you could consider my situation and improve it as soon as possible.
　　 I trust you will take my complaints seriously and look forward to hearing from you soon.
　　I understand you will give immediate attention to this matter and reply at your earliest convenience.