此类信件一般遵循以下步骤和原则：
1．首段：陈述事实，表明写作意图和反映的问题。
2．主体段：写明要谈论或陈述的具体内容。要求文字简明达意，层次分明，字迹清楚。
3．末段：表明自己的观点和态度并提出建议。
[常用句式]
1．I'm writing to tell you the discussion we've had about...
2．I'm very glad to write to you about...
3．There have been different opinions.
4．Opinions are divided on the question.
5．It is certain that we do have different opinions on this matter.
6．...students think/hold (the belief) that/have argued that/are against the idea/don't accept the idea/feel strongly against the idea...
7．Some people are in favour of/support/are for the idea of doing...
8．As far as I'm concerned，.../In my opinion，...
