开头提出要讨论的内容
Many people are familiar with the… , which has ignited a hot debate throughout the country, because…
人们熟悉的…引起了一场全国范围内的热烈讨论，因为…
Serious as the situation is, many people are still ignorant of the necessity of… , and effective measure must be taken before things get worse.
情况是严重的，但人们仍然没有意识到…的必要性，以及必须在事情变得更糟之前采取有效的措施
Nobody could have failed to notice the fact that… has been a severe problem we are confronted with.
没人会不注意到…是我们面临的一个严重问题
With the development of science and technology, more and more people believe that…
随着科技的发展越来越多的人认为…
中间列举论据
Numerous illustrations can be given, but… is enough
数不胜数的例子可以说明，但…这一个就够了
Many people insist that…
许多人认为…
People’s views on… vary from person to person. Some hold that … however, others believe that…
人们对…的观点因人而异。有些人认为…然而其他人却认为…
最后得出结论
Taking into account all these factors, we may reasonably come to the conclusion that…
考虑这些所有的因素，我们可能会得出合理的结论…
Only in this way can we…
只有这样，我们才能…
It must be realized that…
我们必须意识到…
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