TOEFL Speaking Task 3 Sample: Explain how the example from the professors lecture ilustrates the concept of a photoperiodic response.

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

2.预估分数

23. 3.表达

从表达方面来看，这位同学的回答整体上比较清晰，但在某些地方存在一些不太流畅的现象。建议同学在练习口语时，注意保持语速的稳定和减少不必要的停顿。此外，尽量避免发音不准确导致的拼写错误。加强发音练习，提高口语表达能力。

4.话题发展 从话题发展方面来看，同学的回答基本上涵盖了阅读和听力材料中的关键信息，并且对概念进行了解释。但是，在组织结构和连接思路方面还有待加强。建议同学在练习时，注意将阅读和听力材料中的关键信息进行更紧密的联系，并尝试使用更多的连接词来使回答更加连贯。通过多做练习，提高话题发展能力。

5.语言使用

Original Answer: amount of daylight the plants exposed to change. The amount of daylight to which plants are exposed changes. (将句子改为完整的陈述句，使用正确的介词和时态。) It will initiate internal change in the plants. This will initiate an internal change within the plants. (使用更自然的表达方式，并添加定冠词。) The professor uses an example to explain the concept. When the day is long in summer, there is normal amount a normal amount (添加定冠词。) of water in the tree. They are well hydrated. But when the day gets shorter, the darkness is increasing. The plants will sense the shift and dry out their water in their bodies. It will contain less water. Because when the temperature gets colder, the water in them will freeze, which is a damage to them. So to avoid the phenomenon, it's probably better to keep the plants water.

Revised Answer (140 words): The amount of daylight to which plants are exposed changes, initiating an internal change within the plants. The professor illustrates this concept with an example of trees in temperate climates. During long summer days, trees have a normal amount of water and are well-hydrated. However, as days get shorter and darkness increases, trees sense this shift and begin to dehydrate their cells, reducing their water content. This adaptation is crucial for their survival because when temperatures drop during winter months, any remaining water in their cells could freeze, causing significant damage. By dehydrating their cells and reducing water content, trees can effectively avoid this potential harm and successfully endure the cold winter months.

6.思维导图

- Photoperiodic Response
  - Internal change
    - Initiated by daylight changes
  - Example: Trees in temperate climates
    - Summer
      - Long days, well-hydrated
    - Winter
      - Shorter days, darkness increases
      - Trees sense shift
        - Dehydrate cells
          - Reduce water content
          - Prevent freezing damage

7.关键词

1.子项得分

• 交付 (Delivery): 3

• 语言使用 (Language Use): 3

• 话题发展 (Topic Development): 3

2.预估分数

• 总分: 23

3.表达 回答中的发音大部分清晰，语速适中，但有时会出现不必要的停顿。建议在练习时注意连贯性和自然的停顿，同时注意发音的准确性，避免出现拼写错误。

4.话题发展 回答内容基本上是连贯和有组织的，能够清楚地表达观点，并提供了足够的支持和例子。但是，在解释植物光周期反应的过程时，可以更详细地描述树木如何感知日照时间的变化以及它们如何适应环境变化。此外，尝试使用更多不同的词汇和表达方式来增强回答的丰富性。

5.语言使用

Original Answer: The reading is about photoperiodic response, which means that some animals will sense the hours of daylight and make some response to this phenomenon. The reading passage discusses the photoperiodic response in plants, a process in which they sense changes in daylight hours and react accordingly. (原文中提到的是植物的光周期反应，而不是动物。修改后的句子更准确地描述了阅读材料的内容。) In listening, the professor expressed this by giving one example. In the lecture, the professor illustrates this concept with an example. (修改后的句子更自然地描述了听力材料中教授的讲解。) In summer time, the sun will rise from early in the morning till late in the evening. During summer, sunlight is present from early morning until late evening. (修改后的句子使用了更自然的表达方式。) But in winter months, the trees can detect the daytime is getting shorter, so they will make sure their tissue to dry out. However, during winter months, trees can detect that daylight hours are decreasing and respond by drying out their tissues. (修改后的句子使用了更准确和自然的语言描述树木如何感知日照时间变化并作出反应。) That's important because the water itself will begin to freeze in winter times. This is crucial as water within the tissues can freeze during winter. (修改后的句子更简洁地描述了这一现象的重要性。) And also so it will cause a lot of damage to the trees. This can potentially cause significant damage to the trees. (修改后的句子使用了更准确和自然的表达方式。) But with that water in tissue, it will reduce that damage to the trees. By reducing the water content in their tissues, trees can minimize this damage. (修改后的句子更清晰地解释了树木如何减少冬季受到的损害。) That's how the lecturing explains the photoperiodic response. That's how the lecture demonstrates the concept of photoperiodic response. (修改后的句子更自然地总结了听力材料中教授对光周期反应概念的解释。)

Revised Answer (140 words): The reading passage discusses the photoperiodic response in plants, a process in which they sense changes in daylight hours and react accordingly. In the lecture, the professor illustrates this concept with an example. During summer, sunlight is present from early morning until late evening. However, during winter months, trees can detect that daylight hours are decreasing and respond by drying out their tissues. This is crucial as water within the tissues can freeze during winter. This can potentially cause significant damage to the trees. By reducing the water content in their tissues, trees can minimize this damage. That's how the lecture demonstrates the concept of photoperiodic response.

6.思维导图

• Photoperiodic Response
  • Reading Passage
    • Plants
    • Sensing daylight hours
    • Reacting accordingly
  • Lecture
    • Example
      • Summer: long daylight hours
      • Winter: shorter daylight hours
      • Trees' response: drying out tissues
        • Importance: prevent freezing damage

7.关键词