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unit4Isn’titwonderful?Inthisunit,youwilllearnto:1.Gettoknowdifferentinventions2.Discusstheimpactofinventions3.TurnsmallthoughtsintogreatideasPart1Wordsinventionn.发明（物）inventv.发明，创造，编造inventorn.发明家clearlyadv.清楚地clearadj.清楚的v.清理displayn.展示，展览，表现v.显示，陈列，展出pocketn.口袋lasern.激光（镭射）turninto变成turnsth./sb.into把变成full-sizeadj.原尺寸的typev.打字n.类型...
unit4IsntItWonderful?listeningandspeakingB“Warm-upPartⅠcellphone手机makeacalllistentomusiccamera相机takephotosrecordvideos录视频typeletterskeyboard键盘screen屏幕download下载“Lead-in”PartⅡsmartphone智能手机Whatisthead(广告)about?afford买得起high-qualitycamera高清摄像头leftrightIsntitwonderful?WhatisDavidunboxing(从箱子中取出)?smartphoneshape(形状)videoscreencolorcameraweight（...
