在高中阶段，英语写作是语文学习中不可或缺的一部分。无论是日常的作文练习，还是考试中的写作题，一个良好的开头和结尾都能为整篇文章增色不少。掌握一些经典的、优美的开头和结尾句式，不仅能让文章结构更完整，还能提升整体的语言表达能力。

在写作的开头部分，可以采用一些引人入胜的方式，如引用名言、提出问题、描述场景或点明主题。例如：

- "As the old saying goes, 'A journey of a thousand miles begins with a single step.' So does the process of learning English."

- "In today's fast-paced world, communication plays a vital role in our daily lives. English, as an international language, has become more important than ever."

- "Have you ever wondered what life would be like without technology? It is hard to imagine, but the impact of technology on our society is undeniable."

这些开头句式不仅语言流畅，而且能够迅速吸引读者的注意力，为下文做好铺垫。

而在文章的结尾部分，则需要对全文进行总结，并给出自己的观点或展望。优秀的结尾可以让整篇文章留下深刻的印象。例如：

- "In conclusion, while there are many challenges in learning English, the rewards are well worth the effort. With persistence and practice, anyone can improve their language skills."

- "To sum up, the importance of English cannot be overstated. It opens doors to new opportunities and helps us connect with people from all over the world."

- "Only by understanding the value of English can we truly appreciate its role in our future."

这些结尾句式简洁有力，既回顾了文章内容，又表达了作者的观点，增强了文章的逻辑性和说服力。

总之，恰当运用一些优美的开头和结尾句子，不仅能让高中英语作文更加生动、有层次感，也能提高写作的整体质量。希望同学们在平时的练习中多积累、多运用，逐步提升自己的英语写作水平。