高中英语Unit3Computers3.2学案(含解析)新人教版必修2

1、高中英语Unit3computers3. 2学案(含解析)新人教版必修2Period 2文本研读课/ 学案没计+-iff-一学习目标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。(l)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 ma

2、chine by Charles Babbage.(3)As a result I totally changed my shape.自主预习Guess who I am?It' s a long history.I began as a calculatingmachine.Over time I was built as an analytical machine byCharles Babbage.From then on, I grew rapidly both in size and in brainpower.As time went by, I was made smal

3、ler. First as a PC.Then as a laptop.°c°c七 o o o12 3甲团乙困As a result my memory became so largethat even Icouldn* t 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 Rea

4、ding4 .SkimmingA. Read the text quickly and try to find out the topic sentence for each paragraph.Matching work:Topic sentencesParagraphs1.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

5、 been changed quite a lot.Paragraph 32. ScanningDraw the timeline（时光轴）and 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

6、 text carefully and then fill in the blanksAlthough he was young, he could difficult (2) After two hundred years he was built as anmachine by Charles Babbage. Hecould think ,It was considered as arevolution and start of his (6) intelligence. By the 1940s he grew as large as a room, This ： worried hi

7、s designers. As time by, he was made smaller. First as a 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 (1L) large ( even he himself couldn, t believe itSince the 1970s many new (13) have been found for him. H

8、e has even been put into (14) and sent to (15) the 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

9、 father was Charles Babbage, who wrote a book and built 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 people, s homes in the 1970s.()5. Since my birth I have been built to take the place of human race.()Step 2 Cracking t

10、he hard pointsObserve the sentences carefully and translate 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

11、 all, with the help of my electronic brain which never forgets anything, using my intelligence is what I' m 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 fo

12、llowing charts.Paragraph 1Paragraph 2Paragraph 3Topic sentenceOver time I have beenchanged quite a lot.These changes only became possible as my memory improved.Since the 1970s many new applications have been found for me.Supportingdetails1. calculatingmachine2. analyticalmachine3. universal machine4

13、. PC1. 2. 3. 4. 5. 1. 2. 3. 4. 5. 6. 5. laptop7.8.Step 4. Post-readingHave a debate:Computers have good effects on our life.You may begin by.1. Great changes have taken place since computers came into people' s life.2. Over time.3. By using computers, we deal with.4. We can, t live without.5. I

14、don' t agree.6. We still. . with the help of.7. As a result, it.8. Computers have brought.9. so. that.10. I don, t 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,what f s more,

15、what f s worse, in addition,all in all课后提升1.And my memory became so large that even I couldn' t believe it!我的存储容 量变得如此之大,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 couldn- t follow him.1940s The computer had grown as large as a room.1960s The f

16、irst 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.simplify (2)sums (3)analytical (4)logically (5)technological (6)artificial (7)reality (8)went (9)Personal (10)totally (11)so

17、 (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.tubes 2.transistors 3.chips 4. network 5. World Wide WebParagraph 3 1. communication 2. finance 3. trade 4. ro