英语建议类作文的写作结构通常包括以下几个部分：

开头

表达写信的目的，例如：“Dear [收件人姓名], I am writing to offer some suggestions regarding [主题]....”

表达感谢

如果对方之前有请求你的帮助，可以表示感谢，例如：“I am very glad to receive your letter asking for my advice on [主题]....”

提出问题或现状

简要描述你希望提出建议的背景或原因，例如：“I understand that [问题或现状], and I would like to suggest [建议]....”

给出建议

列出你的建议，可以分点陈述，例如：

“Firstly, I suggest [建议一]....”

“Secondly, I recommend [建议二]....”

“Moreover, I believe [建议三]....”

说明建议的好处

阐述你的建议可能带来的积极影响，例如：“I believe this kind of arrangement will [好处]....”

结束语

表达期待对方考虑你的建议，并感谢对方花时间阅读你的信，例如：“I look forward to your consideration of my suggestions. Thank you for your time and attention. Yours sincerely, ”

示例

```

Dear Lily,

I think you had better feed a hamster. The oldest kind of pet these days is the one that is noisy at night. They love to sleep all day, too.

What’s more, you should keep a good mood. Keeping a good mood can make us healthy and wealthy. Secondly, we should have enough sleep every day. Don't stay up late at night and get up early in the morning. Thirdly, we should develop a good eating habit, namely eating more fresh fruits and green vegetables, less meat and no junk food. Besides, make sure that eat at regular intervals. In addition, we should change our clothes as the season goes. What’s more, when we are at home, we should open the windows to keep the air clean. Last but not least, do the exercise every day to strengthen our health.

Please pay attention to these points, keeping a healthy body.

Yours,

[Your Name]

```

建议

保持结构清晰：确保每个部分都有明确的主题，避免东拉西扯。

语言简洁明了：尽量使用简单、直接的词汇和句子结构。

逻辑性强：按照逻辑顺序排列建议，使文章条理清晰。

注意格式：保持信件的格式规范，包括称呼、正文和结束语。

通过以上步骤和示例，你可以撰写出一篇结构合理、内容清晰的建议类英语作文。