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.

以上就是中公考研MPAcc小编为考生整理的"2021考研英语18类小作文结构性语句：投诉信"相关内容，功夫不负有心人，只要各位同学好好复习，相信一定会有所收获的。