It is obvious in the graph/table that the rate/number/amount of Y has undergone dramatic changes. It has gone up/grown/fallen/dropped considerably in recent years (as X varies). At the point of （接近）X1, Y reaches its peak value of …(多少).
What is the reason for this change? Mainly there are …(多少) reasons behind the situation reflected in the graphic/table. First of all, …(第一个原因). More importantly, …(第二个原因). Most important of all, …(第三个原因).
From the above discussions, we have enough reason to predict what will happen in the near future. The trend described in the graph/table will continue for quite a long time (if necessary measures are not taken括号里的使用于那些不太好的变化趋势).
Some people believe (argue, recognize, think) that 观点1. But other people take an opposite side. They firmly believe that 观点2. As for me, I agree to the former/latter idea.
There are a dozen of reasons behind my belief. First of all, 论据1.
More importantly, 论据2.
Most important of all, 论据3.
In summary, 总结观点. As a college student, I am supposed to 表决心.
或From above, we can predict that 预测.
People hold different views about X. Some people are of the opinion that 观点1, while others point out that 观点2. As far as I am concerned, the former/latter opinion holds more weight.
For one thing, 论据1.
For another, 论据2.
Last but not the least, 论据3.
To conclude, 总结观点. As a college student, I am supposed to 表决心. 或From above, we can predict that 预测.
There is no consensus 一致of opinions among people about X（争论的焦点）。Some people are of the view that 观点1，while others take an opposite side, firmly believing that 观点2。As far as I am concerned, the former/latter notion（观念）is preferable in many senses. The reasons are obvious.
First of all, 论据1。
Among all of the supporting evidences, one is the strongest. That is, 论据3。
A natural conclusion from the above discussion is that总结观点。
As a college student, I am supposed to 表决心. 或From above, we can predict that 预测
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