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Ⅳ. Unit task.
After completing this unit, can you write down your understanding about how to introduce an invention?
1. Start with the background
• Explain the problem: People had a hard time
• State the solution:
2. Describe the invention
• Name and function: His / Her invention, called
• Process: He / She spent years
3. Conclude with the importance of the invention
It’s now one of the
After completing this unit, can you write down your understanding about how to introduce an invention?
1. Start with the background
• Explain the problem: People had a hard time
washing clothes by hand
. They wished washing could be easier
.• State the solution:
A scientist
wanted to invent a washing machine
. It could clean clothes automatically
.2. Describe the invention
• Name and function: His / Her invention, called
“QuickWash”
, is able to wash clothes quickly and cleanly
.• Process: He / She spent years
doing experiments and improving designs
. Finally, he / she made it work well
.3. Conclude with the importance of the invention
It’s now one of the
most common and helpful inventions in the world
in the world.答案
One possible version:
1. Start with the background
·Explain the problem: People had a hard time washing clothes by hand. They wished washing could be easier.
·State the solution: A scientist wanted to invent a washing machine. It could clean clothes automatically.
2. Describe the invention
·Name and function: His invention, called “QuickWash”, is able to wash clothes quickly and cleanly.
·Process: He spent years doing experiments and improving designs. Finally, he made it work well.
3. Conclude with the importance of the invention
It’s now one of the most common and helpful inventions in the world.
1. Start with the background
·Explain the problem: People had a hard time washing clothes by hand. They wished washing could be easier.
·State the solution: A scientist wanted to invent a washing machine. It could clean clothes automatically.
2. Describe the invention
·Name and function: His invention, called “QuickWash”, is able to wash clothes quickly and cleanly.
·Process: He spent years doing experiments and improving designs. Finally, he made it work well.
3. Conclude with the importance of the invention
It’s now one of the most common and helpful inventions in the world.
解析
【分析】本题是介绍发明的单元写作任务，需按照给定的“背景-发明描述-重要性”结构填空。首先梳理逻辑：背景部分要先说明人们面临的问题、愿望，再点明发明者及要发明的物品和功能；描述发明部分要写名称、功能、研发过程；最后总结发明的重要性，需结合具体发明的相关内容，确保语句通顺、符合英语表达习惯。
【解析】1. 背景部分：解释问题时，对应示例填“washing clothes by hand”（人们手工洗衣服很困难），愿望填“washing could be easier”（希望洗衣服更轻松）；解决方案部分，发明者填“a scientist”，发明物品填“washing machine”，功能填“clean clothes automatically”（自动洗衣服）。2. 描述发明部分：名称填“QuickWash”，功能填“wash clothes quickly and cleanly”（快速干净洗衣服）；研发过程填“doing experiments and improving designs”（花数年做实验改进设计），结果填“made it work well”（最终成功）。3. 重要性部分填“most common and helpful inventions”（最常见有用的发明之一）。
【答案】One possible version:
1. Start with the background
·Explain the problem: People had a hard time washing clothes by hand. They wished washing could be easier.
·State the solution: A scientist wanted to invent a washing machine. It could clean clothes automatically.
2. Describe the invention
·Name and function: His invention, called “QuickWash”, is able to wash clothes quickly and cleanly.
·Process: He spent years doing experiments and improving designs. Finally, he made it work well.
3. Conclude with the importance of the invention
It’s now one of the most common and helpful inventions in the world.
【知识点】英语写作（介绍发明）、英语常用短语运用
【点评】本题为单元任务，聚焦介绍发明的写作框架，通过填空形式帮助学生掌握写作逻辑，结合具体发明实例巩固相关英语表达，是对单元知识的综合应用，实用性较强。
【难度系数】0.3
【解析】1. 背景部分：解释问题时，对应示例填“washing clothes by hand”（人们手工洗衣服很困难），愿望填“washing could be easier”（希望洗衣服更轻松）；解决方案部分，发明者填“a scientist”，发明物品填“washing machine”，功能填“clean clothes automatically”（自动洗衣服）。2. 描述发明部分：名称填“QuickWash”，功能填“wash clothes quickly and cleanly”（快速干净洗衣服）；研发过程填“doing experiments and improving designs”（花数年做实验改进设计），结果填“made it work well”（最终成功）。3. 重要性部分填“most common and helpful inventions”（最常见有用的发明之一）。
【答案】One possible version:
1. Start with the background
·Explain the problem: People had a hard time washing clothes by hand. They wished washing could be easier.
·State the solution: A scientist wanted to invent a washing machine. It could clean clothes automatically.
2. Describe the invention
·Name and function: His invention, called “QuickWash”, is able to wash clothes quickly and cleanly.
·Process: He spent years doing experiments and improving designs. Finally, he made it work well.
3. Conclude with the importance of the invention
It’s now one of the most common and helpful inventions in the world.
【知识点】英语写作（介绍发明）、英语常用短语运用
【点评】本题为单元任务，聚焦介绍发明的写作框架，通过填空形式帮助学生掌握写作逻辑，结合具体发明实例巩固相关英语表达，是对单元知识的综合应用，实用性较强。
【难度系数】0.3
