TOEFL Speaking Task 4 Sample: Summarize the professor's lecture about aquatic birds. Be sure to include the examples of the auk and the grebe.

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 在回答中，发音大部分清晰，语速适中，但有时会出现不必要的停顿。建议在练习时注意连贯性和自然的停顿。同时，注意准确发音以避免拼写错误。

4.话题发展 回答内容基本上符合题目要求，提到了鸟类翅膀和腿部的适应性变化以及鸟类在水中和陆地上的优缺点。但是，在组织结构上可以更加清晰。建议在练习时注意逻辑性和条理性，以便让听众更容易理解。

5.语言使用

原文：In the lecture, the professor talks about adaptations that help birds to swim in the water and find their prey. Well, the first one is that birds change their wing size to quickly and powerfully push water. For example, the auk, their wings are short and help them to dive underwater to chase fish. However, it has disadvantages, when they are flying, they should float their wings very fast and they can just fly for a short distance. And also, some birds change the location of their legs and feet, located back on their body. So, this will help them to put their legs and feet behind their body when swimming under the water. But they have disadvantages too. For example, the grebe, they are good swimmer and diver, but cannot stand on the land, even fall forward.

修订：In the lecture, the professor discusses adaptations that enable birds to swim in water and find their prey. The first adaptation is that birds alter their wing size for quick and powerful propulsion through water. For instance, auks have short wings that assist them in diving underwater to pursue fish. However, this adaptation has drawbacks; when flying, they must flap their wings rapidly and can only cover short distances. Additionally, some birds change the position of their legs and feet by moving them further back on their bodies. This allows them to tuck their legs and feet behind them while swimming underwater. Despite its advantages in swimming, this adaptation also has its drawbacks. For example, grebes are excellent swimmers and divers but struggle to walk on land and may even fall forward.

(在这个修订版本中，我们使用了更自然的语言风格，例如将"talks about"改为"discusses"，将"change"改为"alter"等。同时，我们也修正了一些语法错误，如将"they should float their wings very fast"改为"they must flap their wings rapidly"。)

修订后的回答（140词）：

In the lecture, the professor discusses adaptations that enable birds to swim in water and find their prey. The first adaptation is that birds alter their wing size for quick and powerful propulsion through water. For instance, auks have short wings that assist them in diving underwater to pursue fish. However, this adaptation has drawbacks; when flying, they must flap their wings rapidly and can only cover short distances. Additionally, some birds change the position of their legs and feet by moving them further back on their bodies. This allows them to tuck their legs and feet behind them while swimming underwater. Despite its advantages in swimming, this adaptation also has its drawbacks. For example, grebes are excellent swimmers and divers but struggle to walk on land and may even fall forward.

6.思维导图

• Lecture

  • Adaptations
    • Swim in water
    • Find prey

• Wing size

  • Example: Auk
    • Short wings
    • Dive underwater
    • Pursue fish
  • Drawbacks
    • Rapid wing flapping
    • Short flying distances

• Leg and feet position

  • Moved further back on body
  • Tuck behind while swimming underwater
  • Example: Grebe
    • Excellent swimmer and diver
    • Struggle to walk on land
    • Fall forward

7.关键词

1.子项得分

Delivery: 3 Language Use: 3 Topic Development: 3

2.预估分数

23. 3.表达

在表达方面，发言者的语言流利度和语速基本一致，偶尔有停顿。但在某些地方，标点使用不当导致了不恰当的停顿。此外，发言者的发音在某些单词上存在一定的错误。建议发言者多加练习，提高发音准确性和语言流利度。

4.话题发展

从话题发展的角度来看，发言者的回答内容基本上是连贯和有组织的，观点之间的联系清晰，并且提供了足够的支持和例子。但是，在描述鸟类适应水生环境的过程中，可以更详细地说明这些适应是如何影响鸟类在其他环境中生活的。此外，在描述auk和grebe两个例子时，可以更具体地解释它们在水中和陆地上行动方式的差异。建议发言者在回答问题时尽量提供更多具体细节，以便更好地阐述观点。

5.语言使用

Aquatic birds developed a lot of adaptations to help them move in water, but this make made(改为过去时) them be less efficient to move in other environments. Here are two examples. First, their wings were changed to help them move quickly and push water. This make made(改为过去时) them less equipped to fly. Here is example about birds' arc an example of the auk bird(更清晰的表述). They have short and muscular wings to help them dive in water and catch fish. However, they cannot fly high and far. Second, aquatic birds changed it the position of(更清晰的表述) where their legs and feet are located on the body. The location moved far back and their legs can be hidden under the body when they swimming, which can prevent causing drag force. But it's not good for them to walk on land. A kind of birds named creep grebe(拼写错误) are good divers, but when they step on land, they may even fall when they walking.

Revised Answer (140 words):

Aquatic birds developed numerous adaptations to help them move efficiently in water, but these adaptations made them less effective in other environments. Two examples illustrate this trade-off. First, the wings of aquatic birds evolved to enable quick movement and water propulsion; however, this adaptation made them less equipped for flight. The auk bird, for instance, has short and muscular wings that allow it to dive and catch fish underwater but limit its ability to fly high or far. Second, the position of the legs and feet on aquatic birds' bodies shifted further back, allowing them to tuck their legs under their bodies while swimming, reducing drag. This adaptation is disadvantageous for walking on land. Grebes, for example, are excellent divers and fast swimmers due to their leg placement but struggle to walk on land, often stumbling or falling forward.

6.思维导图

- Aquatic birds
  - Adaptations
    - Wings
      - Auk bird
        - Short and muscular wings
        - Dive and catch fish
        - Limited flight ability
    - Leg and feet position
      - Grebe bird
        - Legs further back on body
        - Reduced drag while swimming
        - Struggle to walk on land
  - Trade-offs
    - Efficient movement in water
    - Less effective in other environments

7.关键词