九年级英语：Unit9 When was it invented Section B课件 人教版新目标.ppt

1、Lets make up some puzzles,Here is a box. You can use it to cook many kinds of delicious food, such as fish, chicken, meat and rice. You can also use it to make cold dish and food hot in a few minutes.,Lets make up some puzzles,Here is another box with a beautiful glass face. It looks like a TV, but

2、it isnt a TV. It can be used for working very fast. It can help you study or work.,This little thing has got numbers from 0 to 9. It is very small, so you can put it into your pocket. Wherever you go, you can use it to talk to your friends and your families far away.,Here is a big box. It can make y

3、our clothes clean and your housework easy. With its help you can have more time to relax or to work .,Play a guessing game,Was the invented in/ago?,date,The abacus was invented in the sixth century by Chinese people. The umbrella was invented about 4,000 years ago in Assyria, China and Egypt. The bi

4、noculars was invented in 1854 by Galileo Porro in Italy. The camera was invented in 1827 by Joseph Nicephore Niepce who took the first picture. The bicycle was invented in 1880s in England.,Challenge your thinking,What would you do if you are alone on a tiny island? Choose five inventions you would

5、like to have on the island with you. Tell the group what you chose and why.,A: Id like to have some matches because I could light a fire to keep warm. B: Yes, but thats not going to help you leave the island. I think it would be better to have a mobile phone.,What would you choose if you were on the

6、 island alone?,Matches Food Clothes Telephone Mp3 Money,Tastes,1.Can you tell me five tastes? 2. Which food is sour? 3.Which food is sweet? 4.Which food is bitter? 5.Which food is salty ? 6.Which food is hot ?,Sour sweet bitter hot salty,orange yogurt,apple banana,tea coffee,salt pizza,pepper onion,

7、crispy and salty,-How does it taste? -It tastes,sour,-How does it taste? -It tastes,sweet,-How does it taste? -It tastes,sweet,-How does it taste? -It tastes,-What kind of food do you like?,-I like food that tastes crispy salty sour sweet,The history of chips,1. I dont like eating chocolate. The tas

8、te is too _. 2. Mom added salt but it still wasnt _ enough. 3. I prefer lemons to oranges. I like the _ taste. 4. She likes _ cookies. They are hard, dry and easily broken.,crispy,sweet,salty,sour,crispy,sweet,salty,sour,Listening (2a, 2b: P71),The potato chips were invented by mistake. 2. They were

9、 invented in 1863. 3. The customer thought the potatoes werent thin enough.,T,F,T,4. The customer said they werent salty enough. 5. George wanted to make the customer happy. 6. The customer was happy in the end.,T,F,F,_that potato chips were invented by mistake? Chips _ _by a chef called George Crum

10、. They were invented in_. George Crum cooked them for a long time until they _And he sprinkled lots of salt on them so they were_.,The history of chips,Did you know,were invented,1853,were crispy,really salty,Pairwork,Make up a short dialogue about the history of potato chips with your partner.,和你的同

11、伴一起编排一段有关薯片历史的对话,Go through the long passage and try to find the main ideas about the passage, Then write a passage about it for short. 快速阅读该长篇文章，设法找出文章中的大意，并进行缩写。,1. Wood can be used for_ paper. A. making B. to make C. made D. make 2-Do you think the light bulbs were invented _? No, I dont thing so

12、. A. by mistakes B. by mistake C. for mistake D. with mistakes,A,B,1. 电拖鞋是什么时候发明的？ When _ the electric _ invented? 2. 它们是由谁发明的？ _ were they invented _? 3. 妈妈加了盐，但它仍然不够咸。 Mom added salt but it still wasnt _ _.,were,slippers,Who,by,salty enough,The alarm clock is one of the most annoying _ （发明）. 2 The

13、 scoops_ (use) for having soup. = The scoops_ _(use) _ have soup. 3The alarm clock is used for_ _ _ （叫醒我） The potato chips were invented by a chef. _ _the potato chips _by? By _ _the potato chips _ ? 5The telephone was invented in 1876. _ _the telephone _ ?,达标练习,inventions,are used,are used to,wakin

14、g me up,Who were invented,whom were invented,When was invented,Revision:Writing,1.We use the _to count.,The calculator_,calculator,is used for counting.,The microwave oven_ _,2.We use _to make the food hot.,the microwave oven,is used for,3.The _is used for _. (talk with people),talking with people,t

15、elephone,making the food hot.,4. Who_light bulbs_by? 5.The computer_ 1976.,were,invented,was invented in,汉译英。 （1）计算机是何时发明的？ （2）谁发明了计算机？ （3）计算器是用来做什么？ （4）你认为什么是最有用的发明？ （5）每天它能够给人们更多时间工作和玩。,1. When was the computer invented?,2. Who was the computer invented by?,3. Whats the calculator used for?,4. Wha

16、t do you think is the most helpful invention?,5. It gives people more time to work and play every day.,Revision:Writing,1.I open the door.,The door is opened by me.,2.He often helps homeless people.,Homeless people are often helped by him.,3.I handed out some papers just now.,Some papers were handed

17、 out by me just now.,主动语态:主语是动作的执行者。 被动语态:主语是动作的承受者。 被动语态结构为：,(主动语态),(主动语态),(主动语态),(被动语态),(被动),(被动语态),be+过去分词,将下列句子变为被动语态。,Revision:Writing,Exercise,把下列句子变成被动句,1. Bell invented the telephone.,2. Tom bought some books yesterday.,The telephone was invented by Bell.,Some books were bought yesterday.,3.

18、 They visited the city last year.,4. Mr Green often invites me to his house.,5. People all over the world love football.,The city was visited by them last year.,I am often invited by Mr Green to his house.,Football is loved by people all over the world.,6、They have grown rice in South China. 7. We m

19、ust plant more trees next year. 8.I am going to clean our classroom tomorrow.,More trees must be planted next year.,Our classroom is going to be cleaned tomorrow.,Rice has been grown in South China.,把被动句变疑问.,Has rice been grown in South China？,变被动语态的特殊情况,一、双宾语,buy/make sb sth,=buy/make sth for sb,gi

20、ve sb sth,=give sth to sb,1.My father bought me a computer.,A computer was bought for me by my father.,I was bought a computer by my father.,2.He gives me a book.,A book is given to me by him.,I am given a book by him,Sth+be+ 过去分词+ for/to sb+ by sb.,Sb + be+ 过去分词 sth + by sb,二、无to不定式,一感 二听 三让 四看,feel,listen to.hear,let.have.make,watch. see.look at. notice,变为被动时加上to,eg. We often see him play basketball.,He is often seen to play basketball by us.,The boss made the children work for long.,The children were made to wo