2020-2021学年高中人教版英语必修2学案：UNIT 3 SECTION Ⅰ　WARMING UP .doc

1、Unit 3ComputersUsing apps to protect teens, kids onlineMost kids have cellphones or tablets (平板) and are texting or using social media all the time. Experts say that parents should use apps to watch out for their childrens online activities.According to a survey, 70 percent of US teens carry cellpho

2、nes, and Russ Warner, the CEO of Net Nanny, is in the business of protecting kids online. His best advice to parents is to know what is out there and to plan in advance.“Put a plan into place because kids like to feel protected，” Warner said. “They like to feel like Mom or Dad is helping.”According

3、to another study, almost 90 percent of children have seen cyber bullying (网络欺凌) in the last year. However, Warner said only 50 percent of parents talk with kids about avoiding these experiences.“That means the other half dont and thats a problem，” he said.Warner often speaks to parent groups concern

4、ed about keeping their teens safe, “Oftentimes (时常地) if we cant control or we dont understand something, we avoid it and we cant do that anymore.”He said parents need to talk to their children about online danger, and then they need to use safety software. Parents should know who is trying to commun

5、icate with their children and what they are watching online.Warner added parents also need to understand phone settings (设置). iPhone settings come with restrictions (限制) that are easy to set. Parents can enable restrictions with a code that they know, and their child does not. Parents can also set p

6、hones to not allow apps to be downloaded without a passcode.开户快乐学习之旅如何保护青少年上网安全已成为人们普遍关注的问题，“网络保姆”的总裁就此提出了自己的看法Section Warming Up & Reading.重点单词1calculate vt. 计算2universal adj. 普遍的；通用的；宇宙的3simplify vt. 简化simple adj. 简单的4logical adj. 合逻辑的；合情理的logically adv. 逻辑上；合逻辑地；有条理地5technology n. 工艺；科技；技术technol

7、ogical adj. 科技的6intelligence n. 智力；聪明；智能intelligent adj. 智能的；聪明的7solve vt. 解决；解答8reality n. 真实；事实；现实real adj. 真实的9personal adj. 私人的；个人的；亲自的personally adv. 就个人而言；亲自10total adj. 总的；整个的；n. 总数；合计totally adv. 完全地；整个地11application n. 应用；用途；申请12explore vt. & vi. 探索；探测；探究13anyhow adv. (也作anyway)无论如何；即使如此14g

8、oal n. 目标；目的；球门；(进球)得分.重点短语1have in common有共同之处2compare.with. 把与相比较3from.on 从时起4go by (时间)流逝；超过；经过5as a result 结果6so.that. 如此以至于.重点句式1before引导时间状语从句I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.我发育缓慢，差不多到了两百年之后，查尔斯巴比奇才把我制成

9、了一台分析机。2as引导时间状语从句As time went by, I was made smaller.随着时间的推移，我被制造得更小了。3不定式作表语Anyhow, my goal is to provide humans with a life of high quality.不管怎样，我的目标是为人类提供高质量的生活。课文预读我是谁？第1段译文随着时间的推移我已经被改变了很多。1642年我在法国诞生时是一台计算机器。尽管当时我很年轻，但是我能简化一些复杂的数学题。我发育缓慢，差不多到了两百年之后，查尔斯巴比奇才把我制成了一台分析机。在操作员用穿孔卡为我设计程序后，我能够进行逻辑“思考

10、”，并且能够比任何人更快地算出答案。那时这被当作一次技术革命，也是我“人工智能”的开始。在1936年，我真正的父亲艾伦图灵写了一本书，讲述了怎样使我成为一台“通用机器”来解决任何数学难题。从那时起，我在体积和脑容量方面迅速成长。到20世纪40年代，我已经长得像一间屋子那么大，我不知道我是否还会长得更大。但是，这个现实也使得我的设计者很担心。随着时间的推移，我被做得更小了。自20世纪70年代以来，我一直被用在办公室和家庭里，先是用作个人电脑，后来又做成便携式电脑。第23段译文这些变化只有随着我的存储能力的不断提高才成为可能。最初是被存储到电子管中，以后是晶体管上，后来是非常小的芯片上。因此，我已

11、经完全改变了我的形状。随着我的年龄越来越大，我也变得越来越小。随着时间的推移，我的记忆能力发展得如此之快，就像一头大象一样，我从来不会忘记告诉我的任何事情！我的存储容量变得如此巨大，连我自己都不能相信！但是我总是孤孤单单地站在那里，直到20世纪60年代初，他们才给了我一个用网络连接的家庭。我能够通过万维网和其他人分享我的知识。从20世纪70年代起，我又被开发出了很多新的用途。我在通信、金融和贸易领域变得非常重要。我还被放在机器人里面，被用来制作移动电话，并且用来帮助做医疗手术。我甚至还被放置在航空火箭里去探测月球和火星。不管怎样，我的目标是给人类提供高质量的生活。现在我充满了幸福，因为我是人类

12、忠实的朋友并时时给他们提供帮助！课文理解.课文判断正(T)误(F)1Alan Turing built an analytical machine to solve any mathematical problem.(F)2People began to realize that the computer got cleverer and quicker with time passing by.(T)3The computer wasnt able to share knowledge with others through the World Wide Web until in the 1

13、970s they gave it a family connected by a network.(F)4Since the 1970s, the computer was used by people around the world through the Internet.(T)5The larger the computer is, the more memory it has.(F).课文阅读理解1“I” in the passage refers to .Aa TV setBa computerCa radio Dthe Internet答案：B2How old is the c

14、omputer?AOver 370 years old.BAbout 270 years old.CAbout 170 years old.DAbout 470 years old.答案：A3When was the computer the biggest?AIn 1642. BIn 1936.CIn the 1940s. DIn the 1970s.答案：C4What happened to the computer in the 1960s?AIt was put into robots and used to make mobile phones.BIt was given a fam

15、ily connected by a network.CIt began to be used in the offices.DIt began to be put into space rockets.答案：B5Which is the right order according to time?aThe computer was connected with other computers.bAlan Turing wrote a book about the computer.cThe computer has been sent to explore the Moon and Mars

16、.dThe computer began to simplify difficult sums.Aa，b，c，d Bb，c，a，dCd，a，c，b Dd，b，a，c答案：D.课文难句分析1After I was programmed by an operator who used cards with holes, I could “think” logically and produce an answer quicker than any person.句式分析此句为复合句，after引导时间状语从句；who引导定语从句，修饰operator。自主翻译在操作员用穿孔卡为我设计程序之后，我能

17、够进行逻辑“思考”，并且能够比任何人更快地算出答案。2Over time my memory has developed so much that, like an elephant, I never forget anything I have been told!句式分析此句为复合句，so.that.引导结果状语从句；I have been told为定语从句，修饰anything省略了关系代词that。自主翻译随着时间的推移，我的记忆能力发展得如此之快，就像一头大象一样，以至于我从来不会忘记被告知的任何事情！3But I was always so lonely standing the

18、re by myself, until in the early 1960s they gave me a family connected by a network.句式分析本句中standing there by myself为v.ing形式作伴随状语；until引导时间状语从句；connected by a network为过去分词短语作后置定语。自主翻译但是我总是孤孤单单地站在那里，直到20世纪60年代初，他们才给了我一个用网络连接的家庭。1 (1)be calculated to do sth.(be intended/designed to do sth.)打算/故意/可能做某事(

19、2)calculate on sth./doing sth.(depend/rely on sth.) 指望或依靠某事物It has been calculated that. 据估算(3)calculation n. 计算，推算 calculator n. 计算器，计算者即学即用(1)We havent really calculated the cost of the vacation yet.我们还没有确切地计算出度假的费用。(2)Scientists have calculated that the worlds population will double by the end of

20、 the century.科学家已推算出世界人口在本世纪末将要增加一倍。(3)We cant calculate on having good weather for the barbecue.我们不能指望着有好天气才去烧烤。(4)This kind of computer is calculated to serve the office work.这种计算机是为服务于办公室工作而设计的。(5)By his calculation, it could save airlines hundreds of millions of dollars a year.经过他的测算，这种方法每年可以为航空

21、公司节约数亿美元的开销。2 (教材P18)In 1936 my real father, Alan Turing, wrote a book about how I could be made to work as a “universal machine” to solve any difficult mathematical problem.在1936年，我真正的父亲，艾伦图灵写了一本书，讲述了怎样能使我成为一台“通用机器”来解决任何数学难题。solution n解决办法；处理手段a solution to sth. 的解决方法即学即用(1)With the help of his fri

22、ends, he finally solved the problem.在朋友们的帮助下，他终于解决了问题。(2)Interestingly, it was an inexperienced young man who came up with a solution to the problem.有趣的是，是一个毫无经验的年轻人想出了这个问题的解决方法。(3)The two countries dont agree with each other on some issues, which needs to be solved.这两个国家在一些问题上意见不一致，这一点需要解决。(4)We sh

23、ould try to find a lasting solution to smog.我们应该试图找到解决雾霾问题的持久方案。(5)With all the problems solved, he would have nothing to worry about.随着所有的问题都解决了，他没什么可担心的。3 (教材P18)Since the 1970s many new applications have been found for me.自从20世纪70年代以来，人们在我的身上发现了很多新的用途。(1)an application form申请表make an application

24、(to sb.) for sth. (向某人)申请某物(2)apply v. 应用；适用；申请，请求apply.to.把涂到；把应用到apply to 适用于apply oneself to. 致力于；集中精力于apply (to sb.) for (向某人)申请/请求即学即用(1)When should I make an application if I expect to enter the university?如果我想上大学，应该在什么时候提出申请？(2)The Chinese government has applied itself to fighting corruption.

25、中国政府一直致力于反腐斗争。(3)Up to now, we have received thousands of applications from around the world.到目前为止，我们已经收到了来自世界各地的数千份申请。(4)Id rather you didnt apply for that position. Youre really unsuitable for the job.我宁愿你没有申请那个职位。你真的不适合那份工作。(5)Pupils in this school practised applying what they had learnt to antiv

26、iolence exercises.这所学校的学生练习把所学的东西应用到反对暴力的演习中。4 (教材P18)Anyhow, my goal is to provide humans with a life of high quality.不管怎样，我的目标是为人类提供高质量的生活。归纳拓展(1)anyway和anyhow“无论如何，不管怎样；总之；尽管如此”。在作此类意思讲时，anyway和anyhow一样，都用作让步状语，一般置于句中(其前常有连词but)或句末。(2)anyway和anyhow“况且，更何况，再说，至少”。作此类意思讲时，两者都可用来作状语，对前面的话进行补充，给出一个令人

27、信服的理由，此时anyhow常出现在句首或最后的分句之首，而不出现在句末。(3)somehow adv.以某种方式；用某种方法；不知为什么。即学即用(1)I am not sure whether I will have anything else to do tomorrow. Anyhow, I will try every possible means to come to the party.我不确定明天我是否有其他的事要做，但无论如何，我将尽一切可能来参加这个聚会。(2)He reflected that the quality of the instruments was good

28、 anyway.他寻思，不管怎样，这些乐器的质量还是不错的。(3)Somehow, I dont feel I can trust him.不知什么缘故，我觉得我不能信任他。(4)Anyhow/Anyway, Id better go now.无论如何，我得走了。(5)Im afraid we cant come, but thanks for the invitation anyway/anyhow.我恐怕我们来不了，不过还是要感谢邀请。5 (教材P18)Anyhow, my goal is to provide humans with a life of high quality.不管怎样

29、，我的目标是为人类提供高质量的生活。score/kick a goal 得一分/踢进一球keep goal 守球门set oneself a goal of doing sth.为自己确定做某事的目标achieve/realize/reach ones goal 实现目标ones life goal/ones goal in life 生活目标/人生目标即学即用(1)The Italian team managed to kick a goal a few minutes after the match began.比赛开始后几分钟，意大利队便进了一球。(2)My goal in life i

30、s to help others.我的人生目标是帮助他人。(3)I set myself a goal of becoming a part of the school team.我给自己设置了一个目标：成为校队的一员。(4)We are confident that we can reach that goal ahead of schedule.我们坚信可以提前实现那个目标。(5)You cant imagine what difficulty we had in realizing our goal.你无法想象我们在实现我们的目标时有多么困难。1 from.on从时起(教材P18)Fro

31、m then on, I grew rapidly both in size and in brainpower.从那时起，我在体积和脑容量方面迅速成长。from now on 从今以后from then on 从那时起from that day on 从那天起即学即用(1)Please be more careful when you cross the street from now on.从今以后你过马路时要更加小心。(2)From that day on, the ending of the missing Amber Room remains a mystery.从那天起，丢失的琥珀

32、屋的结局仍是一个谜。2 (教材P18)As a result I totally changed my shape.因此，我完全改变了形状。(1)as a result of由于；作为的结果without result 毫无结果地(2)result from. 由产生(后跟原因)result in. 导致；结果(后跟结果)即学即用(1)As a result of automobile pollution, the air quality in major cities has been lowered.由于汽车污染，各主要城市的空气质量有所降低。(2)Let us hope that pea

33、ce will result from our talks.让我们期望，我们的会谈会带来和平。(3)The game resulted in another victory for our team.那场比赛为我们队带来了又一次胜利。名师点津as a result单独使用作状语，多位于句首，用逗号隔开；as a result of引起表示原因的短语，位于句首或句末。1 I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charle

34、s Babbage.我发育缓慢，差不多到了两百年之后，查尔斯巴比奇才把我制成了一台分析机。(1)It takes时间段before从句.表示“过了多久才”。It took months before we solved the financial problem of our company.我们花了几个月的时间才解决了公司的财务问题。(2)before还常用于下列句型中：If you miss this chance, it will be years before you get another one.如果你错过了这次机会，可能需要很多年你才能再获得一次。It was a long ti

35、me before she recovered from the operation.过了很长一段时间她才从手术中康复。as意为“随着”，引导时间状语从句。As the deadline came near, I worked harder.随着截止日期的来临，我工作得更勤奋了。As she grows up, she becomes more beautiful.随着长大，她变得更漂亮了。名师点津as是连词，引导时间状语从句，而with是介词，后接名词或代词构成with短语或with复合结构。As spring comes (come), everything comes to life.W

36、ith spring coming (come), everything comes to life.随着春天的到来，万物复苏。.单句语法填空1You should find a new way to simplify (simplify) your lecture.2The solution to the problem required many hours.3In 2030, a sixth of the countrys potential work force could be totally (total) uneducated.4He spent much of his life

37、 exploring (explore) the wildness.5We should face the reality (real) bravely that we dont have enough money for the project.6It will be half a year before you graduate from the school.7As the final examination is drawing (draw) near, we are busy preparing for it.8Have you filled in the application (

38、apply) form for a new passport?9Im afraid I cant afford the time, but thank you for the invitation anyhow/anyway.10But personally (personal), I think it was a great success.选词填空work out， as a result， from then on， in total， have nothing in common， in reality1Jane and I have nothing in common. That i

39、s to say, we are completely different.2I am glad that things are working out so well for them.3I often turn to my classmates or teachers for help. As a result, I have made steady progress in my studies.4I bargained with the boss over the price of the dress. Finally I paid less than 200 yuan in total for it.5From then on, he made up his mind to work hard.6In reality, my goal was to set up my own business.