人教版高中英语 必修二 Unit3 《Computers---Warming up .ppt

1、Unit 3 ComputersLook at the following pictures and tell their English names.abacuscalculatorhuge computer PCpersonal computerlaptopPDA Personal Digital AssistantrobotCan you tell the development of computers?abacuscalculatorhuge computerPClaptopPDArobotDo you know in what ways computers are used tod

2、ay?Discuss it with your deskmate.(2 min)search for informationwatch movieslisten to musicread books and magazinesbuy things onlineplay games on the computerReadingWho am I?Can you find out the topic sentence of each paragraph?Para I:Para II:Para III:Who am I?Over time I have been changed quite a lot

3、.These changes only became possible as my memory improved.Since the 1970s many new applications have been found out for me.Skim the passage and find out the topic sentence in each paragraph.(2 min)Can you find out the main idea of this passage?A.The development of computers.B.A machine which is simp

4、le-minded.C.The development and the applications of computers.D.Computers may replace human beings.Read para 1 and fill in the chart.(2 mins)calculatingSimplify1822logicallyuniversalRealitySince the 1970sUsed in offices and homes1.My shape didnt change even though my memory improved.2.The older I am

5、,the larger I have become.3.Over time I have large memory so that I will not forget anything I have been told.4.I was able to share my knowledge with others through the World Wide Web in the early 1960s.FFTTThe information was stored in tubes,then on transistors and later on the chips.As I have grow

6、n older I have also grown smaller.Read para 2 and then tell the statement true or false.(1 min)12What roles do computers play in the life of human beings?What are the new applications of the What are the new applications of the computer?computer?Read Para 3 and then answer the following questions.(1

7、 min)What are the new applications of the computer?Communicationfinancemobile phonesTrademedical operationspace rocketsrobotsWhat roles do computers play in the life of human beings?They provide humans with a life of high quality.They are devoted friends and helpers of the human race.Timeline:Find o

8、ut the development of computers in the following years.(1 min)The computer began as a calculating machineThe computer grew rapidly both in size and in brainpower.The computer had grown as large as a room.Computers were used in offices and homes.Computer is a devoted friend and helper of the human ra

9、ce.DiscussionIn what ways computers can be used to do for human race in the future?For example:A:What will computers be developed in the future?B:I think computers will be developed to help us /In my opinion,computers can be used to carry thingsdronework in warsdo space researchHomework1.Finish exercise 1 on page 202.Find out some sentences of the passage you dont understand.We will discuss it in next class.Thank you!