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教学难点：
运用“蛛网图”构思写作内容及结构并写出一篇规范的作文来描述自己的发明。 5.教学过程设计Step1. Warming-up (课前热身)
Read the sentences and guess what inventions they are.
1) It has two wheels. Many students ride it to school. __________
2) It has four wheels. It has a top speed of 200 km/h. __________
3) It has some wheels and two wings. And it can fly in the air. _________
设计意图：通过开展猜测发明物的游戏，既能自然的引入了本课的主题：invention,又能调动学生的兴趣和积极性。
Watch a video about Mr Bean’s invention---Lawnmower and answer the questions below.
What is Mr Bean’s invention?
It is a ______________.
What does it look like?
It has four ___________( wheels / wings). It is made up of some _________(boxes
/ bags). There is a _________( rabbit/ tiger) inside each box.
3） What is special about it?
The rabbits can ________(eat grass/ drink milk). And they can’t run out.
4） How does it work?
Instead of knives, it cut grass with ______(rabbits/ tigers).
5） What will it do in the future?
It will help people live a _________(better / worse ) life in the future.
设计意图：让学生带着问题观看短视频《憨豆先生的发明——剪草机》，培养学生获取信息的能力，并为下面的写作做好铺垫。
Step 2. Read the article about your invention on Page 60 and finish some tasks.
1. Understand the frame of the article.
设计意图：帮助学生理解范文框架。
2. Phrases learning---Match the phrases with the right meaning.
设计意图：帮助学生掌握基本词汇和表达法。
Sentences learning---fill in the blanks.
1）我的发明是一辆飞车。
My invention is a _________ _________ .
2）它有四个轮子和两个翅膀。
It has _________ _________ and _________ _________.