考研英语有很多的知识点，考生都应掌握并知道如何运用。作文也是备考的一部分，小编整理了投诉信的结构性语句，供大家学习。

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.

以上就是考研英语投诉信的结构性语句。考生要多积累，多练习，更多英语备考建议可以查看英语指导栏目。要了解更多考研的内容，可以在右侧窗口留言，会有启航教育的老师一对一为大家做详细的介绍。