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In some countries, people waste a lot of food which is bought in shops and restaurants.
What do you think are the reasons?
What can be done to solve this problem?
这个题目
这个题目, 学生在主体部分某段落有一句话写道：
In terms of restaurants, they can carry out some incentive mechanism to ensure that food is completely eaten by customers.
比较于教师修改后的句子：
In terms of restaurants, they can develop policies to prevent excess orders, and there could also be incentives for diners to eat up what’s on their plates.
* 修改后的句子比原句的结构简单（两个简单的句子的并列），读起来也更顺畅。
* 修改后的句子中，动词和名词的选择以及搭配更合理：develop polices、prevent excess orders、there could also be incentives、eat up what’s on their plates. 对比于原句中的carry out some mechanism（“实施某种机制”。读者的内心OS：“听起来怕怕的”）以及ensure（“保证”。读者的内心OS：“你怎么保证人家吃完？人家就是各种原因没吃完，你是要把人家怎样？”）
* eat up 替代 be completely eaten 是个很重要的语言现象：eat up更习语，be completely eaten 再此处显生硬。diner（“食客”）替代 customer是个词汇量的问题，这些不起眼的单词，其实扫描扫描词汇表就可以迅速学到学会。