TOEFL Speaking Task 2 Sample: Using the professors points and examples, summarize the lecture about product line extensions.

1.子项得分

• 交付 (Delivery): 3

• 主题发展 (Topic Development): 3

• 语言使用 (Language Use): 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，但偶尔存在停顿。为了提高发音的准确性，请注意一些单词的发音，例如 "fescue" 而不是 "fast cube"。此外，尝试减少不必要的停顿，以使语言更流畅。

4.话题发展 回答内容基本上涵盖了阅读和听力材料的主要观点，并提供了实验的例子。然而，在总结时，请注意正确引用教授的观点和例子。例如，问题中提到的是“产品线扩展”，而不是植物竞争。为了使回答更有条理，请在回答开头简要介绍问题，然后再详细讨论实验和结果。

5.语言使用

原文：So the article talks about chemical competition, and that means that the plants can produce a chemical that would affect other nearby plants. The reading passage discusses chemical competition, which refers to plants producing chemicals that can impact nearby plants.（将句子结构进行了调整，使其更自然。）

And the professor used an example of knapweed and fast cube grasses to illustrate the idea. The professor provided an example of knapweed and fescue grass to illustrate this concept.（将“fast cube grasses”更正为“fescue grass”，以提高准确性。）

He said that knapweed dominates the area by using all of the oxygen and the nutrition, so that other plants such as fast cube grass cannot survive there. He mentioned that knapweed dominates the area by consuming all available resources, making it difficult for other plants like fescue grass to survive.（对句子进行了调整，使其更自然。）

So the scientists used a laboratory experiment to illustrate that they plant the two species together in two pods. To demonstrate this, scientists conducted a laboratory experiment in which they planted both species together in two pots.（对句子进行了调整，使其更自然。）

One is with normal soil, and the other is with soil that contains special deactive chemicals. One pot contained normal soil, while the other had soil with special deactivating chemicals.（对句子进行了调整，使其更自然。）

So in the first pod, the grass, the knapweed grow well, but the grass are really small and couldn't absorb the nutrition that they need. In the first pot, knapweed grew well, but the fescue grass was stunted and unable to absorb necessary nutrients.（对句子进行了调整，使其更自然。）

In the second pod, both of the grass and the knapweed grow fine. In the second pot, both fescue grass and knapweed grew well.（对句子进行了调整，使其更自然。）

修订版（140词）：

The reading passage discusses chemical competition, which refers to plants producing chemicals that can impact nearby plants. The professor provided an example of knapweed and fescue grass to illustrate this concept. He mentioned that knapweed dominates the area by consuming all available resources, making it difficult for other plants like fescue grass to survive. To demonstrate this, scientists conducted a laboratory experiment in which they planted both species together in two pots. One pot contained normal soil, while the other had soil with special deactivating chemicals. In the first pot, knapweed grew well, but the fescue grass was stunted and unable to absorb necessary nutrients. In the second pot, both fescue grass and knapweed grew well.

6.思维导图

- Chemical Competition
  - Knapweed and Fescue Grass
    - Dominating Resources
    - Laboratory Experiment
      - Two Pots
        - Normal Soil
          - Knapweed Growth
          - Stunted Fescue Grass
        - Deactivating Chemicals Soil
          - Both Grow Well

7.关键词