Introduction
Recent years have witnessed ...(背景)， which has aroused a heated debate of whether ...(把要讨论的话题引入进来) Views on this issue vary from person to person. From my point of view, before airing my own opinion, I do think it's necessary to analyze / explore this thorny issue from different angles / both sides of this thorny issue.
Main body
Those who ………(正面观点)tend to present the following reasons. To begin with, ……… In addition, ………. What’s more, ………
...(尽量用不同的论证方法)
However, other people may examine / explore this issue from another angle. For one thing, ... For another thing, ... Furthermore, ...
Conclusion
In conclusion, although it's very difficult / hard to draw / come to / reach / arrive at an absolute conclusion to this issue, I would not hesitate to assent to the former / latter viewpoint because I'm fully convinced that ……
万能开头：
As Descartes(笛卡尔) once said: "If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things"然后后面再加上你自己的模板："although the author's claim that... is not wholly insupportable, it would still be a mistake to draw the conclusion generally. In my observation..."