TOEFL Speaking Task 3 Sample: Explain how the example in the lecture illustrates the effects of an environmental disturbance.

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，这个回答的发音和语速基本上是清晰和流畅的，但是在某些地方存在一些不必要的停顿。为了提高口语表达能力，建议在练习时注意保持连贯性和一致性，尽量减少不必要的停顿。同时，注意发音的准确性，避免出现拼写错误。

4.话题发展 从话题发展方面来看，这个回答基本上是连贯和有组织的，但在某些地方可以进一步加强。例如，在描述蓝草和白花之间的关系时，可以更详细地说明环境干扰如何导致这种变化。此外，在提供支持或例子时，可以尝试使用更具体和详细的信息来增强论点。总之，在练习时注意提高回答的连贯性和组织性，并在适当的地方提供更多支持或例子。

5.语言使用

Original: Environmental disturbance means the natural growing condition of plants are often interrupted or disturbed by normal occurrence. And the professor used one example to illustrate this concept. For example, there is one species called bull's grass. It grows so dense, in the end, it will block the sunlight of other plants. So therefore, some plants can get sunlight, in the end, they will die. However, the change suddenly happened. Like, the farmer introduced an animal called cow, and it will eat the grass. So, in the end, they will have more space and sunlight for the other plants. Therefore, some white flowers can grow where blue grass used to be. In the end, more and more white flowers happen in that field. So, that's the example to illustrate the concept of environmental disturbance.

Corrected: Environmental disturbance means An environmental disturbance occurs when the natural growing condition(改为更自然的表达方式) of plants are is often interrupted or disturbed by normal occurrence(改为单数形式，使语法正确). The professor used one example to illustrate this concept. For example, there is one species called bull's grass bluegrass(纠正拼写错误). It grows so dense(保持原文，但注意发音), in the end, it will block the sunlight offor other plants. So therefore, some plants can getcannot receive sunlight, in the end, they will die. However, the change suddenly happened. Like, The farmer introduced an animal called cowcows, and itthey will eat the grass. So, in the end, they will have more space and sunlight for the other plants. Therefore, some white flowers can grow where blue grass used to be. In the end, more and more white flowers happenappear in that field. So, that's the example to illustrate the concept of environmental disturbance.

Revised (140 words): An environmental disturbance occurs when the natural growing conditions of plants are interrupted or disturbed by normal occurrences. The professor illustrated this concept with an example of a species called bluegrass. This grass grows densely, blocking sunlight for other plants and causing them to die due to lack of sunlight. However, a sudden change occurred when a farmer introduced cows into the field, which began eating the bluegrass. This created more space and allowed sunlight to reach other plants. As a result, various types of wildflowers started growing where bluegrass once dominated. Over time, an increasing number of wildflowers appeared in the field, demonstrating how environmental disturbances can lead to increased plant diversity.

6.思维导图

- Environmental Disturbance
  - Interruption of natural growing conditions
  - Example: Bluegrass
    - Dense growth
    - Blocks sunlight for other plants
  - Sudden change
    - Introduction of cows
    - Grazing on bluegrass
  - Result
    - More space and sunlight
    - Growth of wildflowers
    - Increased plant diversity

7.关键词