第一段：(引子)
第一句： 描述背景 There are various different opinions on the subject of …
替换句型： there are widely differing views on the issue of whether …or not .
The issue of whether …or not is certainly a contentious one .
The past 20 years have seen a dramatic increase in …
The past 20 years have seen a considerable increase in …
These days , it seems that …
第二句： 引入话题 while some people might suggest that …,
替换句型：1. while some still hold to the view that …
2. this raises certain question about …
3. Despite the arguments of some people that …
第三句： 表达观点 I personally believe that …
替换句型：1. In this essay , I intend to argue that …
2. I would argue that the overall impact of …has in fact been negative / positive . Two of the primary drawbacks associated with this trend are as follows .
3. Although there are valid arguments to the contrary , in this paper I will argue that
4. It is my believe that …
5. Personally I do not agree with this opinion , for the following reasons
6. However , I am not a believer in the argument that …
7. I disagree with this point of view for the following reasons
第二段：(说理)
第一句： Firstly, obvious is a sight that …
替换句型：1. first of all , it is indisputable fact that …
2. first of all , it is an undeniable fact that …
3. it is an irrefutable fact that …
4. it is vitally important that …
5. one point which I believe to be absolutely pivotal is the fact that …
6. it is vital that …
第二句： This is because …
第三句： for example …
替换句型： This is particularly so given the fact that …