雅思综合写作听力预测案例讲解！众所周知，听力通常是学生在综合写作中最头疼的问题，听不到听力中的反驳。下面由新航道的沈阳雅思培训小编为您解答！

　　TPO21 P2

　　Moreover, genetically modified trees promise to bring a number of economic benefits to those who grow them. Genetically modified trees tend to grow faster, give greater yields of food, fruit, or other products and be hardier. This allows tree farmer to get faster and greater returns on their farming investment and save on pesticides as well.

　　Now as to the second point, they’re hidden costs associated with genetically modified trees. You see, the company that genetically modify the tree can charge tree farmers more for its seeds than un- genetically modified trees would cost. Also, as you’ve grown the tree, you can’t just collect the seeds and plant the new tree for free. By law, you have to pay the company every time you plant.

　　基因变化的树生长得更快，产量更大——>带来了更多的收入。VS没有考虑到影响收入的隐藏成本:企业种子收费每次种种种都要额外收费

　　我们可以看到，阅读会带来economic benefits，换句话说，赚钱

　　因此，我可以在听力预测中想到赚钱的反义词，即不赚钱，所以要么增加成本，要么赔钱。在听力方面，只要我们能听到cost，即使我们听不懂整篇文章，你也可以写出听力的主要观点。

　　再来看一个例子

　　TPO22 P3

　　Third, ethanol fuel will never be able to compete with gasoline on price. Although the prices of ethanol and gasoline for the consumer are currently about the same, this is only because of the help in the form of tax subsidies given to ethanol producers by the United States government. These tax subsidies have cost the United States government over $11 billion in the past 30 years. If the United States government were to stop helping producers in this way, the price of ethanol would increase greatly.

　　Third, in the future, Ethanol will be able to compete with gasoline in terms of price. It’s true that government subsidies make Ethanol cheaper than it would normally be, but this support won’t always be needed. Once enough people start buying Ethanol, Ethanol producers will increase their production of Ethanol. Generally, increased production of products leads to a drop in its price. So the price of Ethanol will go down as more of it becomes available. Studies show that, if Ethanol production could be three times greater than it is now, the cost of producing a unit of Ethanol will drop by forty percent.

　　阅读觉得

　　价格上升 price would increase greatly

　　根据与既定事实相反的规则

　　听力预测是反义词价格的降低，所以我们发现听力中的反义词价格降低了

　　production three times greater , the cost will drop by forty percent

　　因此，我们发现，即使我们不理解整篇文章，我们也可以根据阅读内容准确地预测听力的反驳点，然后我们可以用预测来定位听力的具体内容。

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