项目式作业
Step 1 What do you think are the greatest inventions around you? Please list 3 to 5 inventions.

Step 2 What is your dream invention?
Draw a poster of it.
Step 3 Introduce your invention.

Step 1 参考填写：
1. Smart phone
2. Electric bike
3. High-speed railway
4. Robot cleaner
5. Shared bike
Step 2 参考提示：可在Poster方框内绘制智能书包的简笔画，标注英文名称"Smart School Bag"完成海报设计即可。
Step 3 参考填写：
Problem it solves: Students carry too heavy textbooks every day, and their schoolbags are easy to get wet on rainy days.
Invention: A special smart school bag
How it works: It is powered by solar energy, it can reduce the weight of the books inside automatically, and it will turn into a fully waterproof state when it meets rain. It also has a small built-in screen to help students check learning materials conveniently.

【分析】本题为英语项目式实践作业，需分三步完成：第一步列举身边3-5项伟大发明，可选取日常常见的实用发明；第二步绘制梦想发明的海报，可选择贴近学生生活的发明作为主题；第三步介绍该发明，需明确其解决的问题、发明内容及工作原理，结合生活实际完成即可。
【解析】Step1：列举身边常见的伟大发明，如智能手机、电动车、高铁等；Step2：绘制梦想发明的海报，可选择智能书包为主题，绘制简笔画并标注英文名称；Step3：介绍发明时，先说明要解决的问题（如学生书包过重、雨天易湿），再介绍发明内容（特殊智能书包），最后说明工作原理（太阳能供电、自动减重、防水、带内置屏幕）。
【答案】Step 1 参考填写：1. Smart phone 2. Electric bike 3. High-speed railway 4. Robot cleaner 5. Shared bike
Step 2 参考提示：可在Poster方框内绘制智能书包的简笔画，标注英文名称"Smart School Bag"完成海报设计即可。
Step 3 参考填写：Problem it solves: Students carry too heavy textbooks every day, and their schoolbags are easy to get wet on rainy days. Invention: A special smart school bag. How it works: It is powered by solar energy, it can reduce the weight of the books inside automatically, and it will turn into a fully waterproof state when it meets rain. It also has a small built-in screen to help students check learning materials conveniently.
【知识点】英语实践应用、发明说明写作
【点评】本题结合学生日常学习生活，注重考查学生的观察能力、创意表达能力及英语应用能力，题目贴近学生实际，完成难度较低。
【难度系数】0.3