Unit9Whenwasitinvented【教学目标】1.知识目标1）掌握以下词汇：bulb,lightbulb,microwave,microwaveoven2）掌握并会运用下列重要短语和句型：alarmclock,themosthelpfulinvention,givesb.sth.,moretimetoworkandplay,everyday,wouldliketodosth.,listentomusic,allday,helpsb.(to)dosth.,itwouldbebettertodosth.—Whatdoyouthinkisthemosthelpfulinvention?—Ithinkthemosthelpfulinventionisthelightbulb.—Whyisthat?—Itgivespeoplemoretimetoworkandplayeveryday.—I’dliketohavearadiobecauseIcouldlistentomusicallday.—Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveaship.2.能力目标说：能够准确地用英语谈论发明的历史。读：能够准确地读出本课的句型及相关的对话。写：能够利用被动语态造句。3.情感目标：了解发明创造给我们的生活带来的便利，珍惜今天的美好生活。【重点难点】重点：能熟练掌握本课时的词汇及句型。难点：准确地运用“一般过去时的被动语态”。【教学过程】I.Warmup教师活动:Reviewwhatwelearntlastclasswithstudents.—Whenwasthetelephoneinvented?—Itwasinventedin1876.—Whenwasthecarinvented?—Itwasinventedin1885.—Whenwasthecomputerinvented?—Itwasinventedin1976.—What’stheheatedicecreamscoopusedfor?—It’susedforscoopingreallycoldcream.—Whowastheheatedicecreamscoopinventedby?—ItwasinventedbyChelseaLanmo学生活动：学生之间对话并表演：A：—Whenwasthecalculatorinvented?B：—Itwasinventedin1971.A：—WhenwastheTVsetinvented?B：—Itwasinventedin1927.A：—Whataretheshoeswithadjustableheelsusedfor?B：—Theyareusedforchangingthestyleoftheshoes.A；—Whatarethebattery–operatedslippersusedfor?B：—Theyareusedforseeinginthedark.A：—Whoarethebattery–operatedslippersinventedby?B：—TheyareinventedbyJulieThompson.II.Pre-task(预备任务)教师活动：听写生词和短语：invent,calculator,scoop,adjustable,heel,battery,operate,battery–operated,slipper,heat,reallycoldicecream,seeinthedark,让2个同学在黑板听写，写完后让另外的2名同学来批改，其他的同学与同桌互批。检查完单词后，教师要多鼓励学生，并结合学生出现的错误适当的讲解一些有规律性的单词记忆法学生活动：让学生以小组为单位，讨论生活中的发明创造并把它们一一列举出来，看哪个小组列举的最多并进行评比。例如：paper,pen,bike,bus,train…IIIWhile-task(同步任务)Task:3a:教师活动：学习新单词bulb,lightbulb,microwave,microwaveoven，领读并强化记忆。利用新单词造句：Whenwasthelightbulbinvented?Whowasitinventedby?Whatisitusedfor?Whenwasthemicrowaveoveninvented?Whowasitinventedby?Whatisitusedfor?把小组讨论并列举出来的发明创造分为helpfulinventions和annoyinginventions两组，让学生把它们写在纸上，找两位同学写在黑板上。学生活动：积极参与讨论，把发明分为有用和使人感到恼怒的发明，并写在P70的表格中。Task23b:教师活动：教师引导学生讨论上面所列举出的物品：—Whatisthealarmclockusedfor?—Itisusedfortellingusthetimeandwakingusup.—Whatisthelightbulbusedfor?—Itisusedforgivinguslightandmakingusseethingsclearly.—Whatisthemicrowaveovenusedfor?—Itisusedformakingfood.—Whatdoyouthinkisthemosthelpfulinvention?—Ithinkthemosthelpfulinventionisthelightbulb.—Whyisthat?—Itgivespeoplemoretimetoworkandplayeveryday.IV.强化巩固Part4Groupwork教师活动：Imaginethatyouarealoneonatinyisland.Choosefiveinventionsyouwouldliketohaveontheislandwithyou.Tellthegroupwhatyouchoseandwhy.教师读标题让学生理解题意，让学生分组讨论，各抒己见，例如：—I’dliketohavearadiobecauseIcouldlistentomusicallday.—Yes,butthat’snotgoingtohelpyouleavetheisland.IthinkitwouldbebettertohaveaboatbecauseIcantaketheboattoleavetheisland.—...
