1、Unit 3 ComputersPeriod 2 文本研读课学习目标1.了解电脑的发展历史,掌握与电脑有关的科技词汇。2.全面培养学生的阅读能力,重点培养概括段落大意和理解文章主旨大意的能力。3.理解并熟练掌握下列重点句型和结构的用法。(1)Over time I have been changed quite a lot.(2)I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.(3)As a re
2、sult I totally changed my shape.自主预习Guess who I am?Its a long history.I began as a calculating machine.Over time I was built as an analytical machine by Charles Babbage.From then on,I grew rapidly both in size and in brainpower.As time went by,I was made smaller.First as a PC.Then as a laptop.As a r
3、esult my memory became so large that even I couldnt believe it!I am a computer!思考导引As we can see from the pictures,computers have developed fast lately,so are you interested in exploring more detailed information?课堂探究Step 1 Reading1.SkimmingA.Read the text quickly and try to find out the topic sente
4、nce for each paragraph.Matching work:Topic sentences Paragraphs1.These changes only became possible as my memory improved. Paragraph 12.Since the 1970s many new applications have been found for me. Paragraph 23.Over time I have been changed quite a lot. Paragraph 32.ScanningDraw the timeline(时光轴)and
5、 find the relevant(相关的)events.The computer began as a calculating machine. 1822 . 1936 . The computer has grown as large as a room. 1960s . 1970s Computers were used in offices and homes.Now . 3.Careful readingA.Read through the text carefully and then fill in the blanksAlthough he was young,he coul
6、d (1) difficult (2) .After two hundred years he was built as an (3) machine by Charles Babbage.He could think (4) .It was considered as a (5) revolution and start of his (6) intelligence.By the 1940s he grew as large as a room,This (7) worried his designers.As time (8) by,he was made smaller.First a
7、s a (9) computer (PC),then a laptop. With time going by,his memory improved too.As a result he (10) changed his shape.Over time his memory became (11) large (12) even he himself couldnt believe it!Since the 1970s many new (13) have been found for him.He has even been put into (14) and sent to (15) t
8、he Moon and Mars.Anyhow he knows his (16) is to provide humans with a life of high quality. B.Read the text again and then do the true or false exercises.1.In 1642 I began as a calculating machine and could solve any mathematical problem.( )2.My real father was Charles Babbage,who wrote a book and b
9、uilt me in 1936.( )3.After I got my new transistors in the 1960s,I became smaller but cleverer and quicker.( )4.I was brought into peoples homes in the 1970s.( )5.Since my birth I have been built to take the place of human race.( )Step 2 Cracking the hard pointsObserve the sentences carefully and tr
10、anslate them into Chinese.1.Over time I have been changed quite a lot.2.As a result I totally changed my shape.3.I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.4.After all,with the help of my electronic brain which never fo
11、rgets anything,using my intelligence is what Im all about.5.This means that it should clean the house,mop the floors,cook the dinner and deal with telephone calls.Step 3.ConsolidationRead the text carefully again and complete the following charts.Paragraph 1 Paragraph 2 Paragraph 3Topic sentenceOver
12、 time I have been changed quite a lot.These changes only became possible as my memory improved.Since the 1970s many new applications have been found for me.Supporting details1.calculating machine2.analytical machine3.universal machine4.PC5.laptop1. 2. 3. 4. 5. 1. 2. 3. 4. 5. 6. 7. 8. Step 4.Post-rea
13、dingHave a debate:Computers have good effects on our life.You may begin by.1.Great changes have taken place since computers came into peoples life.2.Over time.3.By using computers,we deal with.4.We cant live without.5.I dont agree.6.We still.with the help of.7.As a result,it.8.Computers have brought
14、.9.so.that.10.I dont think there is anything in common.Some useful words,phrases and sentence patternsanyhow,from then on,totally,however,in a way,personally,over timein my opinion,whats more,whats worse,in addition,all in all课后提升1.And my memory became so large that even I couldnt believe it!我的存储容量变
15、得如此之大,连我自己也不能相信 !so.that such.that 如此 以至于,引导结果状语从句 ,so 后跟形容词或副词,such 后跟名词。A.句意:He speaks so fast that I couldnt follow him. B.用 so,such 填空(1)It was beautiful a night that we went for a walk. (2)It is a big job that well have to be careful. (3)He has never done difficult work. (4)I havent seen Ann fo
16、r long that Ive forgotten what she looks like. 2.Since the 1970s many new applications have been found for me.从二十世纪七十年代起,我又被开发了许多新的用途。have/has been done 完成时的被动式。A.句意:Ten apartments have been sold in the past one hour.B.用所给词的适当形式填空。1.This book into many languages.(translate) 2.These rooms yet.(not,cl
17、ean) 3.Have these cars ?(repair) 4.How many new words this term?(learn) Homework:Write a short passage on How Computers Have Changed Our Lives.参考答案课堂探究1.SkimmingTopic sentences Paragraphs1.These changes only became possible as my memory improved. Paragraph 22.Since the 1970s many new applications ha
18、ve been found for me. Paragraph 33.Over time I have been changed quite a lot. Paragraph 12.Scanning1642 The computer began as a calculating machine.1822 The analytical machine was made by Charles Babbage.1936 The computer grew rapidly both in size and in brainpower.1940s The computer had grown as la
19、rge as a room.1960s The first family of computers were connected to each other.1970s Computers were used in offices and homes.Now Computers have connected people all over the world.3.Careful readingA.(1)simplify (2)sums (3)analytical (4)logically (5)technological (6)artificial (7)reality (8)went (9)
20、Personal (10)totally (11)so (12)that (13)applications (14)rockets (15)explore (16)goalB.(1)F (2)F (3)T (4)T (5)FStep 2 Cracking the hard points1.经过一段时间我已被改变了很多。2.结果,我已完全改变了我的形状。3.我发育缓慢,差不多两百年后,查尔斯巴比奇把我制成一台分析机。4.不管怎样,在我过目不忘电子眼的帮助下,运用智能就是我的一切。5.这就是说,它可以打扫房间、拖地、做饭、应对来电。Step 3 ConsolidationParagraph 2 1
21、 .tubes 2.transistors 3.chips work 5.World Wide WebParagraph 3 munication 2.finance 3.trade 4.robots 5.mobile phones 6.medical operations 7.space rockets 8.providing a life of high quality课后提升A.句意:他说得太快,我没听懂。B.填空1.so 2.such 3.such 4.soA.句意:在过去的一小时内,十套公寓已被售出。B.用所给词的适当形式填空。1.has been translated into2.have not been cleaned3.been repaired4.have been learned
