TOEFL TPO -1 Speaking Task 3 Sample: Explain how the example in the professor's lecture illustrates the concept of the ratchet effect.

1.子项得分 Delivery: 3 Language Use: 3 Topic Development: 3

2.预估分数

23. 3.表达

在回答中，发音大部分清晰，语速适中，但有时停顿不当。建议在练习口语时注意自然地停顿和连贯地表达观点。此外，注意一些词汇的发音准确性，以避免拼写错误。

4.话题发展 回答内容基本上符合题目要求，能够解释教授的例子如何说明棘轮效应。但在组织结构和连接观点方面还有待加强。建议在练习时更加关注逻辑结构和观点之间的联系，并尝试使用更多的连接词来使回答更加流畅和有条理。

5.语言使用

Original Answer: The marginal ratchet effect means if someone's income increases, the spending of the income will increase too. But when the income starts to decrease, the spending of the income will not decrease appropriately proportionally. And the professor is an example of incentive illustrativeness this phenomenon. The professor used to teach you classes, so he did not earn much money. And when the one professor left, he was able to teach more classes. So he made more money and they started to eat in the restaurant like four times a week. But when the professor came back after the semester, he did not cut down the time eating in the restaurant even he did not earn much money as before. Because he had schedules to eat outside and he even had to pay for the meals by his credit card.

(将“marginal”改为“ratchet”，因为这里讨论的是棘轮效应，而不是边际效应。将“appropriately”改为“proportionally”，因为这里讨论的是收入减少时支出没有成比例地减少。将“incentive illustrativeness”改为“this phenomenon”，因为这里讨论的是教授的例子如何说明棘轮效应。)

Revised Answer (140 words): The ratchet effect occurs when an individual's spending increases as their income increases, but does not decrease proportionally when their income decreases. The professor's personal experience serves as an example of this phenomenon. Initially, the professor did not earn much money and cooked at home. However, when he started teaching more classes and earning more money, he began dining out frequently. After the semester ended and his income returned to its previous level, the professor found it difficult to cut down on eating out, even though he could no longer afford it as easily. He continued to dine out occasionally, resorting to using his credit card to cover the expenses. This example demonstrates the ratchet effect, as the professor's spending habits did not adjust proportionally to his decreased income.

6.思维导图

Ratchet Effect
├─ Definition
│   └─ Increase in spending with income increase
│   └─ No proportional decrease in spending with income decrease
├─ Professor's Example
│   ├─ Initial situation
│   │   └─ Low income, cooked at home
│   ├─ Temporary income increase
│   │   └─ Taught more classes, dined out frequently
│   └─ Income decrease
│       └─ Difficulty cutting down on dining out, used credit card
└─ Illustration of Ratchet Effect
    └─ Professor's spending habits not adjusting proportionally to income change

7.关键词