Welcome to the unit

1、Unit1Livingwithtechnology,Welcometotheunit,Whatelectricalandelectronicproductsdoyouhaveathome?Whichdoyouthinkisthemostuseful?Isthereanythingthatyoudontthinkisuseful?Why?Doyouthinktheseproductshavemadeourlivesmoreconvenient?Why?Whatdoyouthinklifewouldbelikewithoutthem?,MP8,MP5,Electronicappliances,di

2、gitalcamera,cellphone,TVset,PSP,laptop,DVD,refrigerator,washingmachine,microwaveoven,air-condition,electricricecooker,electromagneticoven,kitchenventilator(油烟机),vacuumcleaner,Howhavetheseelectricalandelectronicdevicesimprovedourlives?Makeagroupoffourandtalkabouttheirfunctions.,Discussion,EarlyTVwasi

3、nblackandwhiteandhadapoorpicture.,Speaking,WhatkindofTVdoyouhaveathome?WhatdifferencescanyoufindbetweentheTVinyourhomeandtheTVinthispicture?WhatkindofpicturesdidearlyTVhave?,Thedevelopmentofelectricdevices:,developmentofTV,black-and-whiteTV,colourTV,LCDscreen,Nowwecanrecordmusicusingcomputers.,Inthe

4、pastwhatdidpeopleneedwhentheywantedtorecordmusic?Howdidpeoplerecordmusic?Lookatthepicture.Whatdevicesdopeopleneedtorecordmusicnow?Howdopeoplerecordmusicusingacomputer?,desktop,Palm,developmentofcomputer,laptop,Dictionariesneverlookedlikethisbefore.,Howdoyoulookupawordinapaperdictionary?Howmanyofyouh

5、aveanelectronicdictionary?Howdoyoulookupawordinsuchadictionary?Besidesthedictionary,whatelsecanbestoredinyourelectronicdictionary?Whichdoyouprefer,antraditionalpaperdictionaryoranelectronicone?Andwhy?,developmentofdictionary,dictionary,electronicdictionary,Withmobilephones,wecankeepintouchwithothers

6、whereverweare.,Howdidpeoplekeepintouchinthepast?Andhowdopeoplekeepintouchnow?Comparedwiththepast,whataretheadvantagesofmobilephones?Whatrecentdevelopmentshavebeenmadetomobilephones?,developmentofcommunication,letter/telegram,telephone,beeper,cellphone,areinventedtomeetpeoplesneedsimprovepeopleslives

7、tosomedegreemakepeopleslivesmoreconvenientandeasierbedevelopingveryquickly,Arethereanycommonadvantagesoftheseelectricalandelectronicdevices?,Workinpairs,Canyouthinkofthedisadvantagesorpossibledisadvantagesoftheseelectricalandelectronicdevices?,Theradiationfromsomeoftheelectricalandelectronicdevices,

8、suchasmobilephones,maybeharmfultopeopleshealth.,Whenpeoplebuynewelectricalorelectronicdevices,theythrowawaytheoldones.Thismaygeneratelargeamountofwaste,whichisharmfultotheenvironment.,1.Whatcanourhumanbeingsbenefitfromthedevelopmentofelectricandelectronicappliances?Canwedependontheseappliancescompletely?,Discussion,2.Takeoneoftheelectronicdevicesasanexample.Howhaveitchangedovertime?3.Howhavetheseinventionsimprovedpeopleslives?,1.