Unit 4 Amazing Science Topic 1 When was it invented? Section B 课件24张PPT

课件24张PPT。Unit 4 Amazing scienceTopic 1 When was it invented?
Section B
Teaching AimsLearn the phrases : “be invented by sb” and “ be invented in + year”
Talk about some inventionsGuessing game!Guess the inventions !
You can just stand up and say out your answer!
If you are right, you can get 1 point.What’s this?It is made of plastic.
It is very small and you can put it in your pocket.
It was made in America in 1973 first.
It is used for communicating.
You can also use it to call your
friends, listen to music, play
games and so on.cell phoneWhat’s this?It is made of metal and plastic.
It was first made in America around 1975.
When we travel, we usually take it with us.
It is used to take photos.
digital cameraWhat’s this?It is very thin and light.
It was first made in China in Han Dynasty（汉朝）.
It is made from wood.
It is used for writing on. paperWhat’s this?It is made of metal and glass.
It was made by Thomas Edison first.
When the room is dark, we can use it to make the room bright.light bulb /b?lb/Do you know more about light bulb?I. Listen to 1a and choose the correct answer.( ) 1. Which object is not mentioned in the conversation?
A. Light bulb. B. Airplane
C. Television. D. Radio.
( ) 2. How many things did Thomas Edison invent during his life?
A. More than 2000 B. Less than 2000
C. More than 200 D. Less than 200
( ) 3. Where are Michael and Jane?
A. In the science museum. B. At the school library.
C. In the zoo. D. In the park.
C A A 1c Read 1a again and complete the table.radioairplaneThomas EdisonWilbur and
Orville Wright18791895Read the dialog together! Can you get the information about light bulb now? The light bulb _______ ______ ________ by people everywhere today. It _____ invented ____ 1879. It was invented ________ Thomas Edison. ______ _____ _______ _______ he invented more than two thousand things during his life.
is widely usedwasinbyIt is said that II. Listen to the three passages of 3 and match the pictures with the information.Invention Inventor Year
A. Karl Benz a. 1926
B. John Baird b. 1876
C. Alexander Graham Bell c. 1885
Make sentences like these:
The phone was invented by Alexander Graham Bell.
It was invented in 1876.be invented by + sb 被某人所发明
be invented in + year 在某年被发明
某物品是在过去某个时间被发明的，所以通常会用：
was/ were invented Summary Do you know anything about jeans?Jeans Inventions have changed our lives a lot. Let’s go to see another invention! III. Fill in the blanks with the proper forms of the given words. The first jeans were produced in 1855. At that time, they ________________(not call ) jeans and they were just hard-wearing pants designed for workers. The pants _____________ (make ) of the brown cloth. This kind of cloth ______ usually ________(use) for making tents. Nowadays, their materials have been changed so that it feels more comfortable. And many different jeans styles _______ also ________(create). They _______________( design) not only for workers but also for teenagers and women. Later jeans are popular all over the world. were not calledwere madewasusedarecreatedare designed 1. Light bulb is widely _______people today .
A .used by B. using by C. used of D. used to
2. _____that he has studied abroad for five years.
A. It is said B. It says
C. That is said D. It was said
3. A big supermarket _____in our city last year.
A. is built B. were built C. was built D. has been built
4. It is said that potato chips _____by mistake about one hundred years ago.
A. were invented B. invented C. are invented
5. Wechat（微信） was invented ___ Tencent___ 2011.
A. by, on B. in, by C. by, in C. on, by√√√√√堂上小测1.-- Have you heard of the song Little Apple????
-- Yes. It ___ every morning when aged people do square dancing downstairs.?? (2015年广东)
A.is played???? B.plays????? C.was played????? D.played?
2. Although Flight MH370 has been missing for months, I do believe it ____ someday in the future. (2014年广东)
A. will find B. won't find
C. will be found D. won't be found
3. It _____ last week that the haze(雾霾)in Beijing caused many problems. (2013年广东省)
A. reports B. reported
C. is reported D. was reported
直击中考√√√4. Hot water ____ in the students’ flats from 5 pm to 7 pm now. （2012年广东）
A. supplies B. is supplied
C. supplied D. was supplied
5.?People?who?drink?wine?______?to drive after May Day.??（2011年广东）
A.?don’t?allow??????? ?B.?isn’t?allowed????????
C.?mustn’t?allow?? ? D.?mustn’t?be?allowed
6.?The?16th?Asian?Games____?in?Guangzhou?in?November?,2010.（2010年广东）??A.?holds?????????????B.?will?hold??????????????????
C.?was?held????????D.?will?be?held 直击中考√√√7. He is very surprised that all the houses in the village ___ white. (2014年广州)
A．paint B．painted
C．are painting D．are painted
8. I can't understand what the book is about because it ________ in English. (2013年梅州)
A．writes B．will write
C．will be written D．is written
9. An expert team ___ to study H7N9 bird flu virus in April, 2013. (2013年佛山)
A. is set up B. was set up C. has set up
10. The child without parents ________ good care of by his teachers in this special school. (2013年梅州)
A. is taken B. are taken C. take D. takes
?
直击中考√√√√Talk and write Talk about an introduction of an invention. You can use the information of the review homework.（about 50 words）
Tips: be invented by/in be used for/to
WeChat iphoneTaobaolaptop LET’S每个小组抽取一种发明进行描述，共有四种发明，有两个小组会抽到同一种发明。
小组讨论之后，抽到相同发明物的小组进行PK，用50个字来描述抽到的发明物，较好的一组得10分，另外一组得5分。Tips: be invented by/in be used for/to Which group is the winner?Homework 1. Finish the guiding paper.
2. Preview section C
Work harder,
you will be the next inventor!