以下是一篇关于如何写介绍植树节的英文作文的指导：

1. Introduction

Start your composition with a brief introduction to Arbor Day. Mention its significance and the purpose of celebrating it. For example, \Arbor Day is a special day dedicated to promoting tree planting and raising awareness about the importance of trees in our environment.\

2. History and Origin

Explain the history and origin of Arbor Day. Share when and where it began, and any interesting facts related to its establishment. You could say, \Arbor Day originated in the United States in the 19th century and has since spread to many countries around the world.\

3. Activities on Arbor Day

Describe the common activities that take place on this day. This might include tree planting events, educational campaigns, or community gatherings. For instance, \People often come together to plant trees in parks, schools, and along roadsides.\

4. Importance of Trees

Highlight the importance of trees. Talk about how they provide oxygen, prevent soil erosion, offer shade, and contribute to a healthy ecosystem. Say something like, \Trees are essential for maintaining a balanced environment and for the well-being of all living creatures.\

5. Conclusion

Summarize the main points of your composition and emphasize the significance of Arbor Day once again. Encourage readers to take part in tree-planting activities and to protect our environment. Remember to use simple and clear language, and organize your thoughts logically. You can also include some examples or personal experiences to make your composition more engaging.