1、Unit 1 Living with TechnologyWelcome to the unitWhat electrical and electronic products do you use in your studies?What electrical and electronic products do you use in your life?-Microwave ovens,refrigerators,TV sets,air conditioners,washing machines,vacuum cleaners,CD players,electric fans,mobile
2、phones,digital cameras.Which do you think is the most useful?Picture 1:Compare the TV in the picture with the TV in your home:1.An antenna on top 2.the small screen 3.only black and white pictures 4.no remote controlHow did people record music in the past?-put the tapes into the recorder,then play t
3、he 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 computerusing recording software.The music will then be digitalized and stored in and played by an MP3 playe
4、r.How do you look up a word in a paper dictionary?The words in a paper dictionary are arranged in alphabetical 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 a
5、lphabetical order.If the first and the second letters are the same,we look at the third letter and so on.How do you look up a word in a electronic dictionary?We key in the word we want to look up andclick the buttonEnter.Then the word entry will appear on the screen.What else can be stored in your e
6、lectronic dictionary?There can be a calendar,a list of addresses and phone number,memos or a clock.More recent electronic dictionary have large memory space and some can be used as electronic books with hundreds of books stored inside.Which do you prefer,an electronic book or a traditional paper boo
7、k?Why?How did people keep in touch in the past?-by letter/telegraph/telephoneHow do people keep in touch now?-most by mobile phoneWhat recent developments have been made to mobile phones?-have more and more functions.1)send text messages 2)be used as a digital camera to take still or even moving pic
8、tures.People can send the pictures to other mobile phones or e-mail addresses.3)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.How have different electronic devic
9、es changedover time?How have these inventions improved peopleslives?These inventions have greatly improvedpeoples lives.Mobile phones are a goodexample of this.Before mobile phones came intouse,people couldnt make phone calls or receivephone calls if there was no telephone nearby.With mobile phones,
10、people are able to makecalls at any time and at any place.Today,manyof us are very busy and cannot be expected towait for a long time.Mobile phones provide uswith a chance to keep in touch with otherswherever we are.Discussion:Do the electronic devices bring us advantages or disadvantages?Advantages:meet peoples needs improve peoples lives to some degreeDisadvantages:1)radiation may be harmful to peoples health 2)when people buy new electrical or electronic devices,they throw away the old ones,which not only cause waste,but also be harmful to the environment
