Unit1 Living with technology. Welcome to the unit 高二选修 7.

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Presentation transcript:

Unit1 Living with technology. Welcome to the unit 高二选修 7

Brainstorming: What electrical and electronic products do you have at home?

TV set air-conditioner

refrigerator washing machine

flatiron dust catcher

electric rice cooker electromagnetic oven

kitchen ventilator ( 油烟机 ) cooking utensils （炊具）

desktop laptop

digital camera DVD microphone

MP4 MP3

cellphone telephone

tape recorder electronic calculator

electric fan hair dryer

Which do you think is the most important? Why? Is there anything that you don’t think is useful?

Technological developments in the last few decades have been breathing. Look at the pictures below and describle what you see.

The development of electric devices: black-and-white TV colour TV LCD screen

What kind of TV do you have at home? Early TV had antennae on top. The screen was very small and could show only black-and-white pictures. The size of the TV was small compared with modern TV, and usually it looked like a wooden box. Early TV also did not have a remote control. The control panel was on one side of the screen.

desktop laptop Palm development of computer

development of dictionary dictionary electronic dictionary

development of communication letter/telegram telephone beeper cellphone

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 months 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 s to communicate. s are quick, but people without computers and access to the Internet cannot send s. 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 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 addresses. Mobile phones can be connected to the Internet and 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.

Do you think these things has made our conveniet or have they made simple things more complicated? What do you think life would be like without these products? Discussion

Summary With people’s hard work and intelligence, human beings own lots of useful and handy electric and electronic devices.These devices do make us save 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 find pleasure and happiness in our life.

Homework Write a composition about advantages and disadvantages of technology.

祝同学们学习进步！