英语倡议书的开头和结尾可以根据不同的情境和目的进行设计，但一些常用的表达可以帮助你构建一个清晰、有说服力的倡议书。

开头

引入背景或问题

With the rapid development of our society, environmental protection has become a pressing issue that we cannot ignore.

Recently, there has been a growing concern about climate change, which poses a significant threat to our planet.

明确倡议目的

In order to raise awareness about the importance of environmental protection, we are launching this initiative.

For the purpose of promoting sustainable living, we are calling on everyone to adopt eco-friendly practices.

提出具体问题或现象

Have you noticed the increasing amount of waste we produce daily？ It's time to take action and reduce our carbon footprint.

The earth is our only home, and it is imperative that we protect it from the adverse effects of pollution and deforestation.

结尾

呼吁行动

I urge everyone to join us in this endeavor and make a positive impact on our environment.

Let's work together to create a greener and more sustainable future for ourselves and generations to come.

表达感谢和期望

Thank you for considering our proposal. We believe that with your support, we can make a significant difference.

We look forward to your active participation and hope to see a positive change in our community.

结束语

Together, we can make a difference. Let's take action now.

Sincerely, [Your Name] [Your Position] [Date]

示例

开头：

With the increasing environmental degradation and climate change, it is imperative that we take immediate action to protect our planet. In order to raise awareness and mobilize resources, we are launching the "Green Future" initiative.

结尾：

We sincerely hope that you will join us in this important cause. Together, we can create a greener and more sustainable future. Thank you for your time and support.

通过这些开头和结尾的表达，你可以有效地传达倡议书的核心信息和目的，激发读者的共鸣和行动意愿。