高中英语作文的结尾部分应该简洁明了，有效地总结全文内容，并强调或深化文章的中心思想。以下是一些常用的结尾写作方法：

首尾呼应 ：在文章的结尾，用含义较深的话点明主题，深化主题，起到画龙点睛的效果。例如：“I Cannot Forget Her”的结尾：“After her death, I felt as if something were missing in my life. I was sad over her passing away, but I knew she would not have had any regrets at having given her life for the benefit of the people.”

重复主题句：

回到文章开头阐明的中心思想或主题句上，达到强调的效果。例如：“I Love My Home Town”的结尾：“I love my home town, and I love its people. They too have changed. They are going all out to do more for the good of our motherland.”

自然结尾：

随着文章的结束，文章自然而然地结尾。这种结尾方式简洁明了，让读者感到流畅自然。

总结性结尾：

总结全文的核心观点或情感，简洁明了。例如：“In the end, I realized that the journey was more important than the destination.”

呼应开头/前文：

通过呼应文章开头或前文，形成对称或闭环，让文章更加完整。例如：“Just as I had hoped at the beginning, the experience turned out to be an unforgettable one.”

引发思考或警示：

具有启发性，能够让读者从文章的结尾思考或反思。例如：“What are your thoughts on this？”

使用常用句型

From what has been discussed above, we may safely draw the conclusion that….

Taking into account all the factors, …

In conclusion, …

To sum up, …

All in all, …

As we have discussed, …

It is clear that …

Therefore, we should…

具体案例：

根据文章的具体内容，选择合适的结尾方式。例如，写一个关于友情的故事，结尾可以总结并升华主题：“Through the trials and tribulations, their friendship had grown stronger, proving that true friendship can withstand any test. The bond they shared was a testament to the power of trust and support, and it would continue to shine brightly in their lives.”

通过以上方法，可以使高中英语作文的结尾部分更加生动、有力，给阅卷老师留下深刻印象。建议在实际写作中，根据文章的具体内容和主题，选择合适的结尾方式，使文章更加完整和有力。