2020已进入百日冲刺阶段，同学们在这个阶段需要背一些常用的句式，提高英语语感，从而拿到作文高分。下面是考研英语作文投诉信常用句式，供大家参考。
　　投诉信
　　开头常用句式
　　I am writing to complain about/that… I am writing to inform you that I am dissatisfied with you… I think it’s high time you realize… I am writing to make a complaint about… I feel sorry to trouble you but I am afraid that I have to make a complaint about… I am writing to express my disappointment/ dissatisfaction/ concern about… I am most reluctant to complain, but… I am writing to advise you that I find… inconvenient I wish to draw your attention to the problem / fault… that I bought…
　　I venture to write for complaining about… I feel sorry to trouble you but I am afraid I have to make a serious complaint. It is with great reluctance that I must inform you that … I regret to inform that … Thank you for your … which arrived yesterday. Unfortunately, …
　　结尾常用句式
　　I would be grateful if you could… I trust you will take my complaint seriously and… I will appreciate it very much if you could… I must have you fully understand that without a satisfying solution, I will reserve my right to take legal action. Frankly speaking, I am not prepared to put up with the situation any more. On the condition that this one proves to be unacceptable, I will receive a refund. I would appreciate it if you could… I understand you will give immediate attention to this matter. I look forward to your dealing with these problems without delay. I would like to have this matter settled by the end of… I shall be obliged if you will look into …
　　I understand you will give immediate reply to this matter. If I must be constantly annoyed in this matter, I shall have to …
　　其他常用句式
　　The reason for my dissatisfaction is… Under these circumstances, I find it difficult to… I can no longer tolerate / bear… For one thing… For another… I hope we can manage to sort his out acably. Therefore, I hope to change for another … or I declare a refund. We know that you are not generally careless, but we would like your assurance that this will not happen again. I recently ordered / purchased from you … I must protest against … I find it appalling and distressing that… I received such poor service that I felt I should bring to your attention. If I receive this type of treatment again, I will take my business elsewhere.