TOEFL TPO -1 Speaking Task 3 Sample: Explain how the example from the lecture illustrates the concept of evolutionary loss.

1.子项得分

• 交付：3

• 语言使用：3

• 话题发展：3

2.预估分数

• 总分：23

3.表达 回答中的表达整体较为清晰，但部分句子结构略显简单。建议在练习时注意提高语言的连贯性和流利度，适当增加复杂句式。同时，注意在发音时保持准确，以避免拼写错误。

4.话题发展 回答内容基本上涵盖了阅读和听力材料中的关键信息，但在组织结构和论证方面还有待加强。建议在练习时注意明确地陈述观点，并通过举例和解释来支持观点。此外，尝试使用过渡词和短语来连接不同的想法，使回答更加连贯。

5.语言使用

Original Answer: Evolutionary loss happens when one species moved to a new environment and then lost features once their ancestors have. Evolutionary loss occurs when a species moves to a new environment and loses features that their ancestors once possessed. (将句子结构调整为更自然的表达方式，同时修正时态问题。)
The professor in the lecture gave us an example of a small insect. The professor in the lecture provided an example of a small insect called the ice crawler. (在描述例子时，添加了昆虫的名称以增加细节。)
These insects once lived in a warm place, and they have wings to fly around to get flowers' pollens. These insects once lived in warm tropical forests and had wings that allowed them to fly from plant to plant, collecting pollen from flowers. (使用更具体的词汇描述昆虫的生活环境和行为。)
Over time, more and more insects come to this place and compete for food. Over time, as more insects began inhabiting these tropical forests, competition for food increased. (调整句子结构，使其更连贯。)
So their ancestors finally left this place and moved into a cold area. As a result, the ancestors of ice crawlers eventually left the tropical forests and settled in cold, icy areas. (使用更准确的词汇描述昆虫的迁移过程。)
Living in this cold area, these small insects look different due to the unnecessary of finding food and the need for store energy. In these cold environments, ice crawlers adapted by losing their wings, as flying was no longer necessary for finding food and conserving energy became crucial for survival. (使用更自然的表达方式描述昆虫在新环境中的适应过程。)

Revised Answer (140 words): Evolutionary loss occurs when a species moves to a new environment and loses features that their ancestors once possessed. The professor in the lecture provided an example of a small insect called the ice crawler. These insects once lived in warm tropical forests and had wings that allowed them to fly from plant to plant, collecting pollen from flowers. Over time, as more insects began inhabiting these tropical forests, competition for food increased. As a result, the ancestors of ice crawlers eventually left the tropical forests and settled in cold, icy areas. In these cold environments, ice crawlers adapted by losing their wings, as flying was no longer necessary for finding food and conserving energy became crucial for survival. This example illustrates how evolutionary loss can occur when species adapt to new environments and lose certain features that were once beneficial.

6.思维导图

• Evolutionary Loss
  • Definition
  • Ice Crawler Example
    • Warm Tropical Forests
      • Wings for flying and collecting pollen
      • Increased competition for food
    • Adaptation to Cold Environments
      • Loss of wings
      • Reasons: Unnecessary for finding food, conserving energy for survival

7.关键词