课件30张PPT。Unit 3Inventors and inventionsWhen we speak of inventions, we can’t help think of the four great inventions in ancient China. Can you name them?Warming uppaper-makingprintingcompassgunpowderHow many famous inventors do you know? What did they invent?
Zhang Heng
(78—139)Seismograph Thomas Edison
America
(1847——1931)Alexander Graham Bell
England
(1847--1922) Karl Friedrich Benz
Germany
(1884--1929)Wilbur and Orville Wright invented the airplane, which they patented as a “flying machine”.Choose your lucky number and play a game.AirplaneThis invention is made of metal.
This invention looks like a bird.
It makes it possible for people to fly to different places in the world.
It is powered by an engine and is flown by a pilot. This invention can help people do some daily work.
It is helpful for housewives.
The machine can move something that you put into it.
It needs soap and water to wash something in it. Washing
machineIt allows you to get a likeness of an object.?
When you press the button, it works. When a flash happens, it will copy a scene onto a film.
When the film is developed, the scene you copied appears on a paper-like thing. CameraThe invention looks like a chair.
It has a pipe through which the waste can go.
People use it to get rid of waste in their bodies .
It is usually made of china these years. ToiletAmong the inventions above, which invention do you think is the most important one? Why? And how did it change people’s life?A discovery = =An inventionMake a difference between invention and discovery according the situations.Situation 1Columbus found Tomato in America in 1492. Situation 2The Structure of DNA was first described by James Watson and Francis Crick in 1953.A discovery is __________.
making or designing something that did not exist before.
An invention is __________.
finding or learning about something (place, fact) that has already exist for the first time.Discoveries often lead to inventions.ReadingThe Problem of the SnakesIf some snakes are in your yard, how do you deal with them?Fast - readingThe text narrates the problem of the snakes
and presents the procedures of catching them and applying for a patent.What’s the main idea of the text?Divide the text into four parts and work out the main idea for each part.Part I
Part II
Part III
Part IV(Para.1)The discovery of the problem of the snakes.(Paras2-3)The research on the approaches to solve the problem.(Para. 4-6)The attempts to catch the snakes.(Para.7-8)The requirement of getting a patent.Careful - reading1. The purpose of writing this text is _____.
A. to show us how to trap the snakes but
not to kill them
B. to tell people how to apply for a patent of the
writer's new idea
C. to introduce the writer's new idea of
trapping the snakes and her application for
a patent
D. to tell the readers how to get a new idea and
make it a patentChoose the best answers.C2. The biggest advantage of the writer's new idea is that ____.A. it makes the snakes move slowly
B. it makes the snakes hardly bite us
C. it is easier for us to kill the snakes without hurting ourselves
D. it is easier for us to catch the snakes without killing themD3. What instruments were used for catching the snakes?A. A bowl, ice-cubes, male perfume.
B. A bowl, a bucket, female perfume.
C. A small net, ice-cubes, a bucket.
D. A small net, a bucket, powders.B4. Which statement is true according to the text?A. The snakes were so sleepy in the second attempt that they couldn't bite the writer at all.
B. Your product must be different from everybody else's if you want to receive a patent.
C. The writer decided to send her invention to the patent office the moment she succeeded in catching the snakes.
D. If an application for your product proves to be valid, you can get a patent immediately.B5. According to the text, which subject do you think can be given a patent?A. A new star discovered by a scientist.
B. A new novel written by Huo Da.
C. A new way to make dirty water clean.
D. A new kind of grass found in a mountain which can be used as a medicine.CDiscussionWhy do you think the mother didn’t try to
catch the snakes herself?2. Why do you think the writer felt she had a
chance to distinguish herself by inventing
something merciful to catch the snakes but
not harm them?3. Why do you think the writer chose this way of
solving the problem? Would you do the same?4. Why do you think she failed the first time?HomeworkReview the text and pick out the difficult language points for you.
Find and underline the sentences in the text containing the past participle used as the attribute.
