人教版高中英语 必修二 Unit3 《Computers---Warming up 》 课件

1、Unit 3 Computers With the development of science and technology, many new things appear in human beings life. Lets guess what they are: Warming upGuessing game I am a machine which moves very fast on four wheels. You need a license(执照执照) and must be very careful when you drive me. QQ,BYD, Benz and B

2、MW are some famous kinds of me. Who am I? Warming upGuessing game I am a machine that you use to talk to other people even in a far-away place. I am connected by wire or radio. Now each of us often has a number. Who am I? Warming upGuessing game I am very old now. I was born in China. Many people us

3、ed me for calculating in the past, but now I am a bit lonely because they dont like me now. Do you know who I am? Warming upGuessing game I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am? Warming upGuessing ga

4、me It is a machine, which you can use to type your homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather informationWho am I? Warming upGuessing gameGuiding questions: We use computers almost everyday. But how much do we know about it?When was the

5、computer invented?What did it look like before?Who was the real father of computers?How did computers change through these years?Who am I ?Fast reading1. Choose the best answer Whats the main idea of the text? A. The computer wants to find “who he is”. B. The functional change of the computer. C. Th

6、e computer becomes popular around the world. D. The development of the computer.The structure of the passage Task: The passage has three paragraphs. Find out the topic sentence of each paragraph, and the details that are used to support the topic sentences. Then complete the chart in activity 2. Wha

7、t type of writing is it? expository writing 说明文 Tips: It often has a clear structure, which makes it easy for us to find the answers to the questions.2. Where can we usually find the topic sentence? The beginning of the passage.Careful readingRead the passage carefully and finish the timeline.The co

8、mputer began as a calculating machineThe computer grew rapidly both in size and in brainpower.Computers had grown as large as a room.1960sI have been used in offices and homes.Computers connect people all over the world together.calculatinganalytical universal mathematical problemsScanning for detai

9、lsMedical operations MemoryTransistorsApplicationsCommunicationTradeMultiple choiceWhen was the computer connected by a network?In the 1940s. B. In the early 1960sSince the 1970s D. In 1936What does “others” in Line 24 refer to?Other people B. Other families C. Other networks D. Other computersMulti

10、ple choice3. Who made the first analytical machine?Bill Gates. B. Charles BabbageAlan Turing. D. An operator4. Since the 1970s, computers have been used in the following fields EXCEPT _.financing B. making space rockets exploring the sun A. doing medical operations5. What can you infer from the text

11、?The computer has artificial intelligence.The computer changes a lot over the years.The computer can do more things for the human race in the future.A. The computer can control people in the future. 短文填空 Over time I have been changed a lot. I could 1 (simple) difficult sums when I began 2 a calculat

12、ing machine. After I was programmed by an operator, I could “think” logically and produce an answer quicker 3 any person. At that time it 4 (consider) a 5 (technology) revolution. In 1936, I could solve difficult problems as a 6 (universe) machine. From then 7 , my memory has developed so much 8 I n

13、ever forget anything I have been told. Since the 1970s, many new applications have been found for me. For example, I have been sent to explore the Moon. 9 , my goal is 10 (provide) humans with a life of high quality.simplifyas thanwas consideredtechnological universalon that Anyhow to provideConsoli

14、dation巩固巩固retellingDiscussion: What can computers be used to do in daily life? 1. Help with school work2. Play games3. Send or receive emails4. Listen to music and watch films5. Chat online6. Search for information7. Beautify photos8. Online shoppingBad for eyesBad for eyes Children may be addicted

15、Children may be addicted上瘾上瘾to playing to playing computer games. computer games. What bad influences may computers have on us? People become lazierPeople become lazierIncrease the risk of being cheated by Increase the risk of being cheated by online trapsonline trapsMajority of addicted computer users Majority of addicted computer users lack real life social skills lack real life social skills Computer is a tool,