Unit 1 Living with technology Period 1 课件 3.ppt

1、Unit 1 Living with technology Period 1 课件 3,Unit 1,Welcome to the unit,Science and technology plays an important role in exploring the unknown fields and realizing the dreams of our ancestors (祖先).,High technology has a direct effect on our life. What electrical and electronic appliances (电器) do you

2、 have at home?,Lead-in,Which do you think is the most useful?,What electrical and electronic products do you use in your studies and in your life?,Are they helpful or just make you lazier?,discussion,Electronic dictionaries give students quick responses in their reading. Students using electronic di

3、ctionaries need less time in reading than those who use paper dictionaries. Moreover, electronic dictionaries can provide correct pronunciation to students, which a paper dictionary cannot. The number of people using electronic dictionaries is increasing greatly.,What do you think life would be like

4、 without these products?,Discussion,What conclusion can you draw from the ads?,Man has made remarkable progress in this area in the last few decades. Whats your opinion on this?,They are invented to meet peoples needs. They have improved peoples lives to some degree. They are developing very quickly

5、. The radiation from some of the electrical and electronic devices, such as mobile phones, may be harmful to peoples health. When people buy new electrical of electronic devices, they throw away the old ones. This may generate large amount of waste, which is harmful to the environment.,Picture 1: Co

6、mpare the TV in the picture with the TV in your home:,1. antennae on top 2. the small screen 3. only black and white pictures 4. no remote control (the control panel was on one side of the screen),Development of TV,black-and-white TV,colour TV,LCD screen,Picture 2: How did people record music in the

7、 past?,Put the tapes into the recorder, then play the tape with music at one side and play the record button at the other side to record the music onto the blank tape.,How do people record music using a computer?,Copy the music from a CD to the computer using recording software. The music will then

8、be digitalized and stored in and played by an MP3 player.,gramophone (留声机),radio/tape recorder,MP3,CD player,Development of audio (音响) device,desktop,laptop,palm,Development of computer,Picture 3: How do you look up a word in a paper dictionary?,The words in a paper dictionary are arranged in alphab

9、etical order from A to Z. We need to look at the first letter of the word and use it to search in the dictionary. If two words start with the same letter, we look at the second letter to decide the alphabetical order. If the first and the second letters are the same, we look at the third letter and

10、so on.,How do you look up a word in a electronic dictionary?,We key in the word we want to look up and click the button Enter. Then the word entry will appear on the screen.,What else can be stored in your electronic dictionary ?,There can be a calendar, a list of addresses and phone numbers, memos

11、or a clock. More recent electronic dictionaries have large memory space and some can be used as electronic books with hundreds of books stored inside.,Development of dictionary,dictionary,electronic dictionary,Picture 4: How did people keep in touch in the past?,-by letter/telegraph/telephone,How do

12、 people keep in touch now?,-mostly by mobile phone,What recent developments have been made to mobile phones?,- have more and more functions. 1) send text messages 2) used as a digital camera to take still or even moving pictures. People can send pictures to other mobile phones or e-mail addresses. 3

13、) Mobile phones can be connected to the internet and people can look at web pages with mobile phones. 4) More advanced mobile phones can receive TV signals so that people can watch live TV.,Development of communication,letter/telegram,telephone,beeper,cell phone,Development of camera,mobile phone wi

14、th a camera,digital camera,camera,Development of fan,fan,air-condition,electric fan,There can be a calendar, a list of addresses and phone numbers, memos or a clock. More recent electronic dictionaries have large memory space and some can be used as electronic books with hundreds of books stored ins

15、ide.) Which do you prefer, an electronic book or a traditional paper book? Why?,Besides the dictionary, what else can be stored in your electronic dictionary?,How did people keep in touch in the past? People sent letters in the past, but letters were slow, and they took from a few days to several mo

16、nths to arrive. Then people invented the telegraph, but the telegraph could send only short sentences. Later, people could communicate via telephone, but the disadvantage was that not everyone had a telephone. Now, people use e-mails to communicate. E-mails are quick, but people without computers an

17、d access to the Internet cannot send e-mails. Today, most people use mobile phones to keep in touch with others. The size of a mobile phone is small so people can carry one in a pocket and receive and make calls wherever they are and whenever it is.,What recent developments have been made to mobile

18、phones? Now, mobile phones have more and more functions. They can send text messages. They can also be used as a digital camera to take still or even moving pictures. People can send the pictures they take to other mobile phones or e-mail addresses. Mobile phones can be connected to the Internet and

19、 people can look at web pages with mobile phones. More technologically advanced mobile phones can receive TV signals so that people can watch live TV programmes on their mobile phones.,It is reported that many high school students bring mobile phones to their schools. Do you think high school studen

20、ts should use mobile phones at school? Why or why not?,For reference,Students should not be allowed to use phones while in school. If there is an emergency, a parent can call the office or the office can call a parent. They are in school to learn. They must follow the rules of the building. The use

21、of mobile phones in class is disruptive to the learning environment of all students and should be discouraged.,1. Can we depend on these electronic devices completely?,Discussion,2. How have these electrical and electronic devices improved our lives?,Summary,With peoples hard work and intelligence,

22、human beings own lots of useful and handy electric and electronic devices. These devices do save us a lot of time and energy. Besides, they free us from heavy housework. But we should not depend completely on them. We human beings should make reasonable use of them so that we can relax ourselves and

23、 find pleasure and happiness in our life.,These inventions have greatly improved peoples lives. Mobile phones are a good example of this. Before mobile phones came into use, people couldnt make phone calls or receive phone calls if there was no telephone nearby. With mobile phones, people are able t

24、o make calls at any time and at any place. Today, many of us are very busy and cannot be expected to wait for a long time. Mobile phones provide us with a chance to keep in touch with others wherever we are.,Language points,With mobile phones, we can keep in touch with others wherever we are. 1) Her

25、e “wherever” introduces an adverbial clause. The usage of “-ever” is as follows: however 作连词，“不管用什么方法”。 He can go however he likes. 作副词，“无论如何”、“不管怎样” However cold it is, he always goes swimming. 作副词，“究竟怎么”（表示惊奇）。 However did you find it?,whenever 作连词，“任何时候”。 Whenever we see him we speak to him. 作副词，

26、“任何时间” “任何时候” He might turn up on Monday, or Friday, or whenever, and expect to be given a meal. wherever 作连词，“在任何地方” 、“到任何地方” 、“在任何情况下” 。 Sit wherever you like.,whatever “whatever”作代词，=no matter what “无论什么”、“无论如何”。 Keep calm, whatever happens. “whatever”作代词，=anything or everything that “任何的事物” 、 “每

27、一的事物” 。 Whatever I have is at your service. 作代词“or whatever” “或任何东西” 、 “诸如此类” Hed have difficulty in learning any language Greek, Chinese, or whatever. 作形容词，“任何的”、“无论什么的”、“任何种 类、程度等的”。 Take whatever measures you consider best.,whichever “whichever” 作代词，=anything or everything “无论哪些”、 “无论哪个”。 Whichev

28、er (Anything that) you want is yours. 作代词,“的那一个”。 Whichever of you comes in first will receive a prize. 作形容词，“无论哪个”、“无论哪些”。 He may choose whichever desk he wishes. whoever “whoever”作代词，=any person who the person who “任何人” 、 “无论谁” 、 “的人”。 Whoever (Anyone who) said it, its not so. 作代词，“到底（究竟）是谁”。 Whoe

29、ver told you that?,1 Could I speak to _ is in charge of International Sales, please? Aanyone Bsomeone Cwhoever Dno matter who 2. _tomorrow, our ship will set sail for Macao. AHowever the weather is like BHowever is the weather like CWhatever is the weather like DWhatever the weather is like,3 You sh

30、ould try to get a good nights sleep _ much work you have to do. however B. no matter C. although D. whatever 4.-Dad, Ive finished my assignment. -Good, and _ you play or watch TV, you mustnt disturb me. whenever B. whether C. whatever D. no matter,5. _ makes this shop different is that it offers mor

31、e personal services. A. What B. Who C. Whatever D. Whoever 6. _ team wins on Saturday will go through to the national championships. A. No matter what B. No matter which C. Whatever D. Whichever,7. This is a very interesting book. Ill buy it, _. A. no matter how it may cost B. how may it cost C. how

32、 much may it cost D. however much it may cost 8. If we work with a strong will, we can overcome any difficulty, _ great it is. A. what B. how C. however D. whatever,2) touch n. be/get/keep, etc. in touch to communicate or continue to communicate with someone by using a telephone or writing to them:

33、取得/保持联系 Are you still in touch with any of your old school friends? No, Jane and I never kept in touch after college. Were in close touch with our office in Spain. lose touch to stop communicating with someone, usually because they do not live near you now: 失去联系 We lost touch over the years.,- I thi

34、nk Ill give Bob a ring. - You _. You havent been in touch with him for ages. A. will B. may C. have to D. should,How have different electronic devices changed over time? over: prep. during something, or while doing something: 在.期间，在做.时 I was in Seattle over the summer. Shall we discuss it over lunch/over a drink? They took/spent an hour over lunch (= Their meal lasted an hour). Its fascinating to watch how a baby changes and develops over time (= as time passes).,above or higher than something else, sometimes so that one thing covers the other; above: