广东省惠州市惠东县惠东荣超中学高中英语 Unit3 Computer 第 1学时 Warming up and reading 学案 新人教版必修 2〖单元导航〗Let's do a guessing game. “Who am I?”With me you can watch different programme s just at home. I’m a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes. I am a machine which moves very fast on four wheels. You need a license(执照) and must be very careful when you drive me. Rolls Royce, Benz and BMW are some famous kin ds of me. I am a machine which is a good helper in doing house work. I wash clothes for people. Who am I?A machine that you use to talk to other people even in a far-away place. We are connected by wire or radio. Now each of us often has a number. Who am I?It is a machine, which you can use to type you r homework, draw pictures, play games, watch movies, listen to music, communicate with your friends, gather information… It is a kind of computer which can be taken conveniently like a notebook.Discussing:What do they have in common?(TV set ) (Car) (washing machine) (telephone) (Computer) (laptop)Period 1: Warming up and SkimmingStep1. Pr-reading1. Make a survey on “what do you use computer for?” among your classmates and write down the results.__________________________________________________________________________________________________________________________________________Step21.Find out the answer ‘Who am I?_____________________________________________________________2.What’s the main idea of the text?_____________________________________________________________Step3 Fast-reading1 Finish Ex.1 on page191642:_____________________________________1822:The Analytical Machine was made by Charles Babbage.____: _______________________________ 1940s:______________________________________: The first family of computers was connected to each other. 1970s:_________________________________Now: _____________________________________Step4. Read the passage and find out the topic sentence of each paragragh1Paragraph 1Paragraph 2Paragraph 3Step5. DebateTopic The Internet Advantages:Disadvantages:Step7. Homework: Review the passage. Find out the new words and difficult expressions.〖学习反思〗 KEY:Step1. (略)Step2.1. Computer 2 The development and use of computersStep3:1642 The computer began as a calculating machine． 1822 The Analytical Machine was made by Charles Babbage. 1936 Alan Turing wrote a book to describe how computers could be made to work． 1940s Computers had grown as large as a room. 1960s The first family of computers was connected to each other 1970s Computers were used in offices and homes． Now Computers connect people all over the world together. Step4: 2
