英语四级作文结尾的模板有以下几种：

结论总结型

"In conclusion, the findings of our study illustrate that..."

"Thus, it's evident that the strategies outlined above hold the key to..."

"In summary, the importance of [主题/观点] cannot be overstated. We must take [建议/措施] to ensure that [目的/效果]."

引发思考型

"As we move forward, the implications of this discovery call for further exploration"

"Future research could delve deeper into..."

呼吁行动型

"It is high time that we addressed..."

"Adopting these practices would not only... but also..."

only引导的倒装句

"Only by living up to the three requirements, can we..."

"Only with combined efforts, can we..."

表示结论（同位语从句）

"We can, therefore, come to the conclusion （that）从句"

其他常用结尾句型

"From what has been discussed / mentioned above, we may conclude that..."

"Therefore, it is not difficult to draw / come to the conclusion that..."

"It is high time that something was done about..."

"From all the reasons / consideration above, it is evident / clear / obvious that..."

"Taking into account all these factors, we may reach the conclusion that..."

"Given the reasons / consideration I have just outlined / discussed / presented, I strongly recommend that..."

"It is clear, therefore, that..."

"All in all, what really matters is, in fact, to..."

"It is essential that effective measure be taken to..."

这些模板可以帮助你在英语四级作文中写出结构完整、表达清晰的结尾部分。根据你的文章内容和需求，可以选择合适的模板进行适当的修改和调整。