TOEFL TPO -1 Speaking Task 4 Sample: Using points and examples from the lecture, describe two contributing factors to urban heat island effect.

1.子项得分

• 交付：3

• 语言使用：3

• 话题发展：3

2.预估分数

• 23

3.表达 从交付方面来看，发言者的语音清晰，语速较为稳定，仅有少量停顿。但在某些地方，发言者的停顿不太合适，导致了标点问题。此外，发言者在发音方面也存在一些不准确之处。建议发言者在练习时注意调整停顿，并多加练习发音，以提高口语表达能力。

4.话题发展 从话题发展方面来看，发言者的回答内容较为连贯和有组织，观点之间的联系也比较清晰，并给出了一定的支持和例子。但在某些地方，发言者对于讲座中的观点描述不够准确。建议发言者在练习时更加关注讲座中的细节，并尝试用更清晰、准确的表述来阐述观点和例子。

5.语言使用

Original Answer: Urban heat island is a phenomenon which related to the city which is warmer due to the human activity. And professor used two examples to explain this idea. Firstly, one of the cause is about the construction of the city such as the halls and the road. And their material is thermal friendly. And when the immerse solar energy comes, the road and the concrete will absorb the heat. And in the night, they will slow down the cold process and release the heat as well. And another reason is about the emission from the machine, particularly in the vehicle. Firstly, the engine is activity to produce the heat. Secondly, there is a gas effect to contribute to the urban heat island effect.

Corrected Answer: Urban heat island The urban heat island is a phenomenon which related that relates to the city which cities being warmer due to human activity. The professor used two examples to explain this idea. Firstly, one of the cause the causes is about the construction of the city such as cities, including halls and roads. Their material is thermal friendly thermally conducive. When the immerse solar energy comes, immense solar energy arrives, roads and concrete absorb heat. At night, they slow down the cooling process and release heat. Another reason is about the emission from the machine, particularly in the vehicle emissions from machines, especially vehicles. Firstly, the engine is activity to produce actively produces heat. Secondly, there is a gas effect that contributes to the urban heat island effect.

(将“Urban heat island”改为“The urban heat island”，使句子更自然。将“which related”改为“that relates”，使句子结构更准确。将“the city which”改为“cities being”，使句子更流畅。将“the cause”改为“the causes”，使语法正确。将“the city such as”改为“cities, including”，使句子更清晰。将“thermal friendly”改为“thermally conducive”，词汇更准确。将“the immerse solar energy comes,”改为“immense solar energy arrives,”，使句子更自然。将“about the emission from the machine, particularly in the vehicle”改为“emissions from machines, especially vehicles”，使句子更简洁。将“is activity to produce”改为“actively produces”，使句子结构正确。)

Revised Answer (140 words): The urban heat island effect is a phenomenon that relates to cities being warmer due to human activity. The professor explained this idea using two examples. The first cause is related to the construction of cities, including buildings and roads. These structures are made of materials that are thermally conducive, meaning they absorb heat when exposed to immense solar energy. At night, these materials slow down the cooling process and release stored heat. The second cause is the emissions from machines, particularly vehicles. Vehicle engines actively produce heat as a byproduct of their operation. Additionally, the gases emitted by vehicles contribute to the greenhouse gas effect, further exacerbating the urban heat island effect. Understanding these factors can help us develop strategies to mitigate the impact of urban heat islands on city dwellers and the environment.

6.思维导图

Urban Heat Island Effect
|
|-- Causes
|   |-- Construction Materials
|   |   |-- Thermally conducive
|   |   |-- Absorb heat
|   |   |-- Release heat at night
|   |
|   |-- Emissions from Machines
|       |-- Vehicle engines produce heat
|       |-- Greenhouse gas effect
|
|-- Strategies to mitigate impact

7.关键词