摘要：开始段:总述. Nowadays, there is a widespread concern over - (目前.--引起了广泛的关注.) There is no denying that- It is universally acknowledged that - be closely related to Pose a great threat to - It goes without saying that- There are at least two good reasons accounting for - (至少有两个原因能解释这个现象) 中间段: (1)解释产生这种现象的原因或意义.并做出一定分析. There are at least two good reasons accounting for . On the one hand, . On the other hand, is due to the fact that . In addition, is responsible for .Maybe there are some other reasons to show .But it is generally believed that the above mentioned reasons are commonly convincing. (2)描述不同人群的观点 It is well known that the opinion concerning this hot topic varies from person to person. A majority of people think that 观点一 . In their views there are two factors contributing to this attitude as follows: in the first place, 原因一 .Furthermore, in the second place, 原因二 . So it goes without saying that 观点一 . People, however, differ in their opinions on this matter. Some people hold the idea that 观点二 . In their point of view, on the one hand. 原因一 . On the other hand, 原因二 . Therefore, there is no doubt that 观点二 . 结尾段:提出建议或总结观点或表明态度. As far as I am concerned, I hold the point of view that . Only by this way/doing so can we要实现的目标. / On no account can we .

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