TOEFL Speaking Task 3 Sample: Explain how the example in the lecture illustrates the concept of dimorphism.

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

2.预估分数 Estimated Score: 23

3.表达 从发音和语速方面来看，整体表达较为清晰，但在某些地方存在不适当的停顿。为了提高发音准确性，请注意练习正确的发音，并尝试在练习时保持连贯的语速。同时，注意在适当的地方停顿，以增强语言表达的流畅性。

4.话题发展 The response provides a coherent and well-organized explanation of the concept of dimorphism using the example from the lecture. However, there are some minor inaccuracies and repetitions in the response. To improve topic development, try to focus on providing accurate information and avoid repeating the same ideas. Additionally, work on using a variety of sentence structures and vocabulary to make your response more engaging and informative.

5.语言使用

Original Answer: According to the lecture, individuals in the same species may display differences in different aspects to play different roles. In the lecture, it is mentioned that individuals within a species may exhibit various characteristics to fulfill distinct roles. (根据讲座，同一物种中的个体可能会展示不同的特征来扮演不同的角色。) To be specific, he provides an example about a bird's paradise. Specifically, the lecturer gives an example of birds of paradise. (具体来说，讲师给出了天堂鸟的例子。) To be specific, males have bright colored feathers like lorikeets and stars, Male birds have vibrant, bright-colored feathers, (雄性鸟类拥有鲜艳、亮色的羽毛，) and their feathers are also large, which can make them stand out easily. and their large size makes them stand out easily. (而且它们的体型较大，使它们容易引人注目。) However, the females might have door feathers, In contrast, female birds have dull-colored feathers, (相反，雌性鸟类拥有暗色的羽毛，) which can make them hard to stand out. making them less conspicuous. (使它们不太显眼。) And the males use these feathers to attract a lot of mates. Males use their bright feathers to attract multiple mates. (雄性鸟类利用它们鲜艳的羽毛吸引多个配偶。) And the females don't need these, because they only need to sit in the nest and raise the youngest. Females do not require such features, as their primary role is to sit in the nest and raise the offspring. (雌性鸟类不需要这些特征，因为她们的主要任务是在巢中孵化并抚养后代。) Also, this can avoid that these females being noticed by these predators, Additionally, this helps prevent females from being noticed by predators, (此外，这有助于避免雌性鸟类被捕食者注意到，) and this can be more safe to raise the youngest in the nest. ensuring a safer environment for raising their young in the nest. (确保在巢中抚养后代的环境更安全。)

Revised Answer (140 words): In the lecture, it is mentioned that individuals within a species may exhibit various characteristics to fulfill distinct roles. Specifically, the lecturer gives an example of birds of paradise. Male birds have vibrant, bright-colored feathers, and their large size makes them stand out easily. In contrast, female birds have dull-colored feathers, making them less conspicuous. Males use their bright feathers to attract multiple mates. Females do not require such features, as their primary role is to sit in the nest and raise the offspring. Additionally, this helps prevent females from being noticed by predators, ensuring a safer environment for raising their young in the nest. This example effectively illustrates the concept of dimorphism, where male and female birds of paradise display distinct appearances to perform their respective roles in ensuring the survival of their species.

6.思维导图

- Dimorphism
  - Individuals within a species
    - Exhibit various characteristics
    - Fulfill distinct roles
  - Example: Birds of paradise
    - Male birds
      - Vibrant, bright-colored feathers
      - Large size
      - Attract multiple mates
    - Female birds
      - Dull-colored feathers
      - Less conspicuous
      - Primary role: sit in the nest and raise offspring
      - Prevent being noticed by predators

7.关键词

1.子项得分 Delivery: 2 Language Use: 2 Topic Development: 3

2.预估分数

19. 3.表达

在表达方面，发言者的语速和停顿需要改进。建议练习更清晰、流畅的发音，并保持一致的语速。同时，注意在适当的地方停顿，以提高整体表达效果。此外，需要注意准确发音以避免拼写错误。

4.话题发展 The response does a decent job of explaining the concept of dimorphism using the example from the lecture. However, it could be improved by providing a clearer and more concise summary of the main points from both the reading and listening passages. Additionally, it would be helpful to emphasize the connection between the differences in appearance and their roles in survival for both male and female birds of paradise. To improve topic development, focus on organizing your response more effectively and providing stronger support for your main points.

5.语言使用

Original Answer: The lecture first points out the color and the body shape difference between the male birds and the female birds by explaining the male birds has the bright color and large body while the female birds has smaller and green and brown colors of the body Second, the lecture explains that while the female birds sit on the nest it may attract less attention of the enemies and keep both safe of the nest

Corrected Answer: The lecture first highlights the differences in color and body shape between male and female birds, explaining that male birds have bright colors and larger bodies, while female birds have smaller bodies with green and brown colors. Secondly, the lecture explains that when female birds sit on their nests, they attract less attention from predators, ensuring the safety of both themselves and their offspring. (在这个修改后的回答中，我们使用了更自然的语言风格，修正了语法错误，并提供了更清晰的表述。)

Revised Answer (140 words): The concept of dimorphism is illustrated in the lecture through the example of birds of paradise. The lecturer emphasizes that there are significant differences in color and body shape between male and female birds. Male birds possess bright colors, such as red, yellow, blue, and green, as well as larger bodies. In contrast, female birds have smaller bodies with more subdued green and brown colors. These differences in appearance serve specific purposes for each gender. The vibrant colors of male birds help them attract mates, ensuring successful reproduction. On the other hand, the duller colors of female birds allow them to blend in with their surroundings when sitting on their nests. This camouflage helps protect them from predators, ensuring the safety of both themselves and their offspring. In this way, dimorphism plays a crucial role in the survival of birds of paradise.

6.思维导图

- Dimorphism
  - Birds of paradise
    - Male birds
      - Bright colors
      - Larger bodies
      - Attract mates
    - Female birds
      - Smaller bodies
      - Green and brown colors
      - Camouflage
        - Blend with surroundings
        - Protect from predators
        - Ensure safety of offspring

7.关键词

1.子项得分 Delivery: 2 Language Use: 2 Topic Development: 2

2.预估分数

19. 3.表达

从表达方面来看，这个回答有一些语法错误和不清晰的表达。建议在发音和语法方面加强练习，以便更清晰地传达观点。同时，注意保持一致的语速和适当的停顿。

4.话题发展 从话题发展方面来看，这个回答没有很好地解释了讲座中的例子如何说明二态性这个概念。建议在回答时更加关注阅读材料和听力材料中的关键信息，并确保提供足够的支持或例子来支持你的观点。在组织回答时，要确保观点之间有清晰的联系，并遵循逻辑顺序。

5.语言使用

Original: Diversityism refers to a phenomenon that any animal has a particular sense of belonging, and it may not well make the new books to explicitly refer to others. In the literature, the author takes a parasitic side that refers as a potential choice to a streamer's personal conception. The female birds have vibrant child colors, and their feathers are large. This helps them to mate with young male birds, and they will draw attention from female birds. Although they are very large and young male birds, they have short shapes, so they are less likely to be attracted to a female bird. By judging it has advantages to them being safer, because it can help them live in better conditions instead of being isolated by predators.

Corrected: Diversityism Dimorphism (改为“Dimorphism”，与原文一致) refers to a phenomenon that any animal has a particular sense of belonging, in which certain members within a species display differences in color, size, and shape, (修改为与原文一致的描述) and it may not well make the new books to explicitly refer to others correspond with various survival needs (修改为与原文一致的描述). In the literature lecture (改为“lecture”，与题目一致), the author takes a parasitic side that refers as a potential choice to a streamer's personal conception gives an example of birds of paradise (修改为与听力一致的描述). The female male (改为“male”，与听力一致) birds have vibrant child bright-colored (改为“bright-colored”，与听力一致) feathers, and their feathers are large. This helps them to mate with young male birds, females, (修改为与听力一致的描述) and they will draw attention from female birds. Although they are very large and young male birds, they have short shapes, so they are less likely to be attracted to a female bird. By judging it has advantages to them being safer, because it can help them live in better conditions instead of being isolated by predators.

Revised (140 words): Dimorphism refers to a phenomenon in which certain members within a species display differences in color, size, and shape, corresponding with various survival needs. In the lecture, the professor gives an example of birds of paradise. The male birds have vibrant bright-colored feathers and large feathers, which help them attract female birds for mating. On the other hand, female birds of paradise have smaller, dull-colored feathers that blend in with their surroundings. This helps protect them and their young from predators while they are nesting. The example of birds of paradise illustrates the concept of dimorphism, as the distinct appearances of male and female birds serve different survival purposes, allowing them to perform their roles more effectively.

6.思维导图

• Dimorphism
  • Definition
    • Differences in color, size, shape
    • Corresponds with survival needs
  • Example: Birds of paradise
    • Male birds
      • Vibrant bright-colored feathers
      • Large feathers
      • Attract female birds for mating
    • Female birds
      • Smaller, dull-colored feathers
      • Blend in with surroundings
      • Protect from predators while nesting

7.关键词