Unit 4 Topic 1 When was it invented? Section C 课件 (共28张PPT，内嵌音频)2024-2025学年英语仁爱版九年级上册

(共28张PPT)
Unit 4
Amazing Science
Topic 1 Section C
学习目标
重点探究
自主学习
学习导航
当堂检测
课堂总结
拓展提升
新课导入
What is an invention Share your ideas with others.
学习目标
能熟悉并正确运用本课时的重点单词和短语
能掌握一般过去时的被动语态
能用英语谈论各项发明创造及其步骤
自主学习
New words and expressions
invention n. 发明，创造
list v. 列清单，把……列表
n. 名单；目录；清单
crayon n. 彩色铅笔(粉笔、蜡笔)等
thought n. 想法，看法，主意
silly adj. 愚蠢的，傻的
brainstorm v. 集思广益，动脑筋
evaluate v. 估值，评价，评估
detailed adj. 详细的
redesign v. 重新设计
imagination n. 想像力；想像
balloon n. 气球；热气球
gun n. 枪，炮
robot n. 机器人
keyboard n. 键盘
List some inventions that you know.
Brainstorm
重点探究
1. What is an invention
An invention may be a new product or
a new way of doing things.
Work in groups and discuss the questions before reading.
Pre-reading
invention n.发明，创造
invent v. 发明，创造
inventor n. 发明者，发明家
2.List some inventions that you know and their inventors.
Computer lock television light bulb chopsticks crayon …
3.Do you think you can be an inventor Why
Yes, inventing is interesting and exciting and everyone can be an inventor.
What is an invention
How to make an invention
Inventing is interesting
What's the main idea of the text
Listen to 1a and choose the best answer.
An invention may be a new product or a new way of doing things. Inventions come about in many ways. Most of the time, inventions happen because someone works to solve a problem. Sometimes inventions are the result of accidents. Look at your schoolbags. You have pencils, pens, crayons, rulers and some books. None of these things was planted in fields. They were made in factories and invented by someone. Inventing is interesting and exciting and everyone can be an inventor. Do you want to be an inventor These are a few simple steps to follow in the invention process.
1a Read and understand.
想像力
A. Draw your invention.
B. Name your invention.
C. Test your invention.
D. Use your imagination.
E. Plan and design your invention.
1b Read 1a and put the sentences in the correct places.
________________ You can have wild and crazy thoughts. Remember that no idea is too silly. Many people laughed at the Wright brothers and said they would never fly. But they weren’t discouraged by what people said. That’s why now we have planes.
Use your imagination.
Careful planning is important in the invention process. This is the time to brainstorm for ideas and to evaluate them.
Make a detailed drawing of your invention so others will understand how your invention works.
Make a model of your invention.
Plan and design your invention.
Draw your invention.
See if your invention works as it is planned. If not, do more research, redesign it, and test it again.
Every invention needs a name.
Share your inventions with others.
Test your invention.
Name your invention.
Retelling
What's an invention
Definition:
1.a new product
2.a new way
Ways to
come about:
1.work to solve a problem
2.the result of accidents
Inventing is
interesting
exciting
Draw an Outline for the passage and then retell it
according to the information.
Use your imagination
Draw your invention
Test your invention
Name your invention
Share your invention
Plan and design your invention
The invention process
There’re a few simple steps to follow in the invention process.
Make a model of your invention.
When you want to have an invention , first you must use your __________. Then you should plan and design it.Careful planning is very ___________ in the invention. Third, you should make a _________ drawing of your invention and make a model of it. If you want to make your invention more successful, you must _____ it again and again. After that, you ______ your invention. Last, remember that you should _____ your invention with others.
imagination
important
detailed
test
name
share
1c Read 1a again and fill in the blanks.
balloon
gun
robot
candy
computer
medicine
lock
scissors
spaceship
zero
2 Discuss with your partner which of the following
are the top 3 most important inventions and which is
the least important invention. Then explain your choice
to the class.
Example:
I think zero is the most important invention. It is said that it was invented by an Indian. It is a very interesting number. For example, I have only ten yuan. If you add five zeros after it for me, I will be a rich man.
keyboard
chopsticks
light bulb
television
X-ray machine
candy ---
medicine---
gun ---
lock ---
spaceship---
chopsticks---
keyboard ---
television ---
X-ray machine---
computer---
balloon ---
robot ---
scissors ---
zero ---
light bulb---
by an Egyptian
by Chinese
by a Chinese
by an American
by Russians
by Chinese
by an American in 1714
by an Englishman
by a German
by an American
by Frenchmen
by an American
by an Egyptian
by an Indian
by Edison
1. How did you come up with the idea of your invention
2. What does it look like
3. What is it made of/from
4. What’s it used for
5. What are you going to name it
Before writing, think more clearly and tell about the looks, uses, advantages and disadvantages of an object.
3 Do you know how to be an inventor Do you want
to invent something Write a passage about your
invention. The following questions may help you .
My invention is a robot. It is called “Superman”. There is a computer inside its body. It looks like a tiger. When you see it for the first time, you may be frightened. In fact, it is gentle and polite. It can help us do housework, such as cleaning a room, washing dishes, and making the bed. When the room is dirty, it will begin to work at once. It can also watch over a house instead of humans. It is careful, clever and hard-working. In short, this robot is very useful to us, though it can’t run or speak.
Show Time
Language points
拓展提升
1. come about 出现，发生
e.g. How did this dangerous situation come about
这样危险的局面是怎样出现的？
2. solve a problem 解决一个问题
solve的宾语多为problem, answer的宾语多为question。
3. no one和none都表示否定，但用法有所不同，它们的区
别是：
a. no one用来指人，含有not even one（连一个人也没有）
之意，其后不能接of短语。用作主语时，谓语动词要用
单数。
e.g. No one knew who took the book by mistake.
没有人知道谁误拿了这本书。
No one likes a person with bad manners.
谁也不喜欢不讲礼貌的人。
—Who is in your classroom now 谁现在在教室里？
—No one. 没有人。
b. none不仅指人也可指物，其后常接of短语，构成“none of+名词/代词”结构。当名词是复数时，谓语动词单复数均可。
e.g.
None of the houses has/have a large garden in some big cities.
在一些大城里，没有一幢房子带有大花园。
—How many people are there in your classroom now
现在你班里有多少人？
—None.
没有人。
4. Inventing is interesting
发明是有趣的。此处inventing是动名词作主语，动名词作主语。谓语动词用单数形式。
5. in the invention process
在发明过程中
当堂检测
一、根据首字母补全单词。
1. The girl stood by the window, deep in t .
2. Look out! The bank robbers have got g .
3. As we know, Internet is also a kind of i that is used widely throughout the world.
4. How s you all are! An elephant can’t be like a wall.
5. A large b is made of strong material and is full of hot gas to make it rise in the air.
hought
uns
nvention
illy
alloon
课堂总结
掌握一般过去时的被动语
英语谈论各项发明创造及其步骤
Unit 4 Topic 1
Section C