新人教版必修二 Unit 3 Computers-Warming up[课件]

1、Unit 3 ComputersWarming up, Talking and ListeningDo you know them?keyboardmousefloppy discUSB flash discCD/DVD/VCDCD / DVD-ROM monitorhard discchips1243561. monitor 2. screen 3. CD-ROM4. mouse 5. keyboard 6. hard diskLabel each partabacushuge computercalculatorPC(Personal computer)laptopPDA(personal

2、 digital assistant)robotWhats next? What do they tell you about the development of computers?1. What do they have in common? I think that In my opinion I believe that1. They can be used for calculating. 2. They can deal with maths problems.3. They are our friends.4. They are useful and helpful.Discu

3、ssion One Do you know in what ways computers are used today? Work out a list and compare it with your partner.Discussion Two1. use a computer for school work2. play games on the computer3. send emails to friends4. download music and films5. surf the web for fun6. take part in chat groups7. use the I

4、nternet to research information for school tasks8. buy things on line9. look at photographs on the computer10. read news both at home and abroad, read books and magazines in common: for or by all of a group 共同的；共有的；共用的共同的；共有的；共用的常常常常have in common with 如：如： have nothing in common 无共同之处无共同之处 have lit

5、tle in common 几乎无共同之处几乎无共同之处 have something in common 有一些共同之处有一些共同之处 have a lot/much in common 有许多共同之处有许多共同之处Language points1) You know, Dorothy, I have one thing in common with you2) I have noting in common with him, so how can I get along well with him. 3) In common with many other classmates, I l

6、ike playing basketball. common knowledge/ sense 常识常识 common people 普通人，老百姓普通人，老百姓Reading 1. Fast reading for general ideas1) Who is the speaker in this story?A computer.2) Reading to get the general idea of the type of writing and summary of WHO AM I?Type of writingMain idea ofthe passageThis is a p

7、iece of narrative writing. 记叙文记叙文It tells about the birth and development ofcomputer.Topic sentence of 1st paragraphTopic sentence of 2nd paragraph Topic sentence of 3rd paragraphI began as a calculating machine in France in 1642. My memory improved.Since the 1970s many new applications have been fo

8、und for me. 2. Detailed reading1) Where were you in 1642?2) What were you called in 1936?3) What happened to you in the 1970s?Since the 1970s I have been used in offices and homes.In France.A universal machine.1642The “analytical machine” was made by Charles Babbage.1936The computer began as a calcu

9、lating machine1840sAlan Turing wrote a book about how computer could be made to work as a “universal machine” to solve any difficult mathematical problem.Please fill in the table1940sThe first family of computers was connected to each other.1970s now1960sMany new applications have been found for com

10、puter.Computers connect people all over the world together.Computer had grown as large as a room.Discussion How computers have How computers have changed our lives?changed our lives?Advantages VS. DisadvantagesAdvantages VS. Disadvantages 1. At that time it was considered a technological revolution.

11、 technological adj. -technology n. technical adj. -technique n. technology指总的科学技术（抽象）指总的科学技术（抽象） technique指小的技术，技巧（具体）指小的技术，技巧（具体） Eg. Science and _ modern management _Language pointstechnologytechnique2. artificial adj. 人造的，假的人造的，假的 artificial intelligence 人工智能人工智能 artificial flowers/pearls/smile 假

12、花假花/假珍假珍珠珠/假笑假笑3. solve vt. -solution n.solve a problem/ puzzle/ mysterythe solution to the problemanswer the questionthe answer to the question4. fromon 从从时起时起从那時起，王子与公主就幸福地生活在一起从那時起，王子与公主就幸福地生活在一起。From then on, the prince and princess lived happily.From now on, I will listen carefully in class.5.

13、By the 1940s, I had grown as large as a room, and I wondered if I would grow any larger.by 加时间，一般用完成时态加时间，一般用完成时态By the end of 2009, I _ for ten years.By the time I was fifteen, I _ my dream.as原形原形as，和，和一样一样not as/ so as, 不如不如The room is as large as that room.The room is three times as large as that

14、 room.The room is twice larger than that room.The room is three times the size of that room.可修饰比较级的词可修饰比较级的词a bit, a little, rather, much, far, a lot, a great deal, any, still, even, by far等等 注意：注意：quite, very 不能修饰比较级不能修饰比较级1. That box is _ mine.A. as heavy twice as B. twice so heavy asC. twice as h

15、eavy as D. twice as heavier as2. Does he get _ better?much B. more C. very D. any6. as time went by, I wasas time goes by = with time going by随着时间流逝，他通过努力在英语上取得了很大进步。随着时间流逝，他通过努力在英语上取得了很大进步。As time goes by, he makes great progress in English because of his hard work.7. as a result 结果结果1) 他不用功他不用功, 结

16、果考试不及格。结果考试不及格。 He didnt work hard, as a result he failed his exam. as a result of 的结果，由于的结果，由于2)由于大雪他迟到了。由于大雪他迟到了。 He was late as a result of the snow. 3)由于政府缩减经费的缘故，有五百人被由于政府缩减经费的缘故，有五百人被突然解雇了。突然解雇了。 Five hundred people were fired as a result of government spending cuts. 8. so that如此如此以致于以致于 sucht

17、hateg. He is so old a man that he cant carry the box . He is such an old man that he cant carry the box. They are _ beautiful flowers that we all like them. They are _ beautiful flowers _we all like. so.that.结构的结构的so+形容词形容词/副词位于句首副词位于句首时，句子用倒装结构。时，句子用倒装结构。 So hard does he work that he seldom goes ho

18、me.There are _ many books _ we cant afford them.There are_ many books _ we cant afford.(many, much , few, little(少）前只能用少）前只能用so) adj./adv.so + adj. +a/an +单数名词单数名词 that many/much/few/little(少少) a/an adj. +单数可数名词单数可数名词such+ adj.+复数可数名词复数可数名词 that adj.+不可数名词不可数名词9. anyhow=anywayadv. 无论如何；即使如此；至少无论如何；即

19、使如此；至少1) I couldnt think of the name of that man anyhow. 2)至少你可以试试。至少你可以试试。 Anyhow, you can try. 3)无论如何，我必须说出真相。无论如何，我必须说出真相。 Anyhow I must tell the truth. 区别区别someway, somehow以某种方式，不知怎么的以某种方式，不知怎么的Somehow, he was afraid of his English teacher.10. the human race 人类人类1) Is the human race threatened w

20、ith complete extinction? 人类是否会受到完全灭绝的威胁呢？人类是否会受到完全灭绝的威胁呢？ 人类：人类：the human race 谓语单数谓语单数 human beings/ a human being 可数可数 mankind/ man前不加冠词，谓语单数前不加冠词，谓语单数11. truly adv.-true adj. -truth n.yours truly. 用于信末用于信末=yours sincerelyto tell you the truth 说实话说实话12. begin as= start as后面加职业，身份后面加职业，身份 begin wit

21、h= start with 后面加方式，手段后面加方式，手段 He began _ a teacher. That class began _ a favorite song.end up with+方式方式/ end up in+结果结果11. give sth. away to sb.give its computers away to a local schoolHe gave away most of his money to charity.捐赠捐赠The principle gave away the prizes to her.颁发颁发He gave away our secre

22、t to our teacher.泄露泄露His nervousness gave him away. 出卖出卖引申引申give 短语短语give upgive in (to sb.)give backgive outgive off放弃放弃投降，屈服；上交投降，屈服；上交=hand in归还归还=return分发；释放（热）；用完分发；释放（热）；用完 vi.释放（味道释放（味道.热）热）12. personally = in ones opinion= as far as one is concernedPersonally, I think you are right.13. in a

23、way=in one way=in some ways在某种在某种程度上程度上in the way挡道挡道in this way用这种方法（用这种方法（by this means)on the/ones way (to)去去的路上的路上by the way顺便说一下顺便说一下14. arise-arose-arisen vi.出现出现An opportunity has arisen.arise from 有有引起引起Traffic accidents arise from carelessness.区别区别rise, raise15.make up形成，组成，构成形成，组成，构成One hundred years make up a century.One century is made up of one hundred years.虚构虚构, 捏造捏造, 编造编造The boy made up a story; it was not true. made up an excuse. 编造借口编