TOEFL TPO 59 Speaking Task 4 Sample: Using the points from the talk, describe the two theories that explain the extinction of the dinosaur.

1.子项得分

• 交付：2

• 语言使用：2

• 话题发展：2

2.预估分数

• 总分：19

3.表达 在这个回答中，发言者的表达并不十分流畅，有些词汇的使用不当，如“lake of food”应为“lack of food”，“dischanged”应为“extinct”。此外，句子结构也有待改进。建议发言者多加练习，提高口语表达能力。注意正确使用词汇和短语，并尝试使用更复杂的句子结构。

4.话题发展 从话题发展的角度来看，发言者基本上涵盖了两个理论，但是在解释这些理论时，细节描述不够准确。例如，在第一个理论中，“90%的植物死亡”这一点并未在听力材料中提及；在第二个理论中，“恐龙更容易骨化女性恐龙”这一说法表述不清。建议发言者在进行练习时，更加关注听力材料中的关键信息，并尝试用更准确、清晰的方式进行描述。

5.语言使用

原文：In the biology lecture, the professor talks about two theorems, which cause the distinction of the dinosaurs. The first theorem is about the lake of food. It assumes that there is a big rock crush the earth, which cause the sunlight cannot reach the earth, and 90% of the plants are died, which in turn the dinosaurs are all dischanged in this way. And the second theorem is called the global warming theorem. It means the temperature in the earth are raised rapidly, which affect the boning of the dinosaurs. Since the high temperature will let the dinosaurs more likely to bone the female dinosaurs, so it reduce the number of female dinosaurs and then lead to the distinction.

修改后：In the biology lecture, the professor discusses two theories that explain the extinction of dinosaurs. The first theory is about a lack of food. It suggests that a large asteroid collided with Earth, causing sunlight to be blocked from reaching Earth's surface, leading to many plants dying. Consequently, this affected both plant-eating and meat-eating dinosaurs, resulting in their extinction. The second theory is called global warming theory. It states that rapid increases in Earth's temperature affected dinosaur reproduction. Higher temperatures led to more male than female offspring being born, reducing female populations and eventually leading to extinction.（在修改后的版本中，我们纠正了一些拼写错误，例如将“lake”改为“lack”，将“dischanged”改为“extinction”。同时，我们也对句子结构进行了调整，使其更加清晰易懂。）

建议与解释：（在修改后的版本中，我们纠正了一些拼写错误，例如将“lake”改为“lack”（“lake”意为湖泊，“lack”意为缺乏），将“dischanged”改为“extinction”（“dischanged”并无实际意义，“extinction”意为灭绝）。同时，我们也对句子结构进行了调整，使其更加清晰易懂。）

Revised Answer (140 words): In the biology lecture, the professor discusses two theories that explain the extinction of dinosaurs. The first theory is about a lack of food, resulting from an asteroid collision with Earth. This event blocked sunlight from reaching Earth's surface, causing many plants to die. As a consequence, both plant-eating and meat-eating dinosaurs faced extinction due to the disrupted food chain. The second theory, known as global warming theory, suggests that rapid increases in Earth's temperature affected dinosaur reproduction. Higher temperatures led to a gender imbalance in offspring, with more males than females being born. This reduction in female populations eventually resulted in the extinction of dinosaurs. Both theories highlight different factors that could have contributed to the demise of these prehistoric creatures.

6.思维导图

- Extinction of Dinosaurs
  - Theory 1: Lack of Food
    - Asteroid collision
    - Blocked sunlight
    - Plants died
    - Disrupted food chain
  - Theory 2: Global Warming
    - Rapid temperature increase
    - Affected reproduction
    - Gender imbalance in offspring
    - Reduction in female populations

7.关键词