译林版模块七Unit1Welcome to the unitppt课件.ppt

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1、LivingwithtechnologyUnit1Welcometotheunit1ObjectiveTolookatthefourdifferentelectricalandelectronicdevices(P1)anddiscusshowthesedeviceshavechangedourlives2Manythingshavebeeninventedinthehistoryofmankindandmoreandmorethingsaretobeinvented.Today,itissuchane

2、rathatscienceandtechnologydeveloprapidlyandpenetrateintoourlife.Whatelectricalandelectronicappliances(电器)doyouhaveathome?Lead-in3Whichdoyouthinkisthemostuseful?4Electronicshavedevelopedveryquicklyinthelastdecades.Doyouthinkthesethingshavemadeourlivesmore

3、convenientorhavetheymadesimplethingsmorecomplicated?5Whatdoyouthinklifewithouttheseproductswouldbelike?What’syouropinionontheseproducts?6●Theyareinventedtomeetpeople’sneeds.●Theyhaveimprovedpeople’slivestosomedegree.●Theyaredevelopingveryquickly.●Theradi

4、ationfromsomeoftheelectricalorelectronicdevices,suchasmobilephones,maybeharmfultopeople’shealth.●Whenpeoplebuynewelectricalorelectronicdevices,theythrowawaytheoldones.Thismaygeneratealargeamountofwaste,whichisharmfultotheenvironment.7Enjoyanothervideoabo

5、utthedevelopment8Picture1:ComparetheTVinthepicturewiththeTVinyourhome.1.antennae(天线)ontop2.asmallscreen3.onlyblackandwhitepictures4.noremotecontrol(thecontrolpanelwasononesideofthescreen)9DevelopmentofTVblack-and-whiteTVcolourTVLCDscreen液晶显示器10Picture2:H

6、owdidpeoplerecordmusicinthepast?Putthetapesintotherecorder,thenplaythetapewithmusicatonesideandplaytherecordbuttonattheothersidetorecordthemusicontotheblanktape.11Lookatpicture2.Whatdevicesdopeopleneedtorecordmusicnow?Acomputer,anMP3player,amobilephonean

7、dsomerecordingsoftware.Howdopeoplerecordmusicusingacomputer?PeoplecopythemusicfromaCDtothecomputerusingrecordingsoftware.ThemusicwillthenbedigitalizedandstoredinandplayedbyanMP3playeroramobilephone.12gramophone(留声机)radio/taperecorderMP3playerCDplayerDeve

8、lopmentofaudio(音响)devices13Picture3:Howdoyoulookupawordinapaperdictionary?Thewordsinapaperdictionaryarearrangedinalphabeticalorderfrom‘A’to‘Z’.Weneedtolookatthefirstletterofthewordanduseittosearchinthedictionary.Iftwowords