Unit9Whenwasitinvented?第一课时单元分析与提示教学目标语言目标：1、掌握一般过去时的被动语态。2、学会谈论发明的历史，会使用以下的基本句子：Whenwasthecarinvented?Itwasinvertedin1885.Whoweretheyinventedby?Theywereinvertedby……Whataretheyusedfor?Theyareusedforseeinginthedark认知目标弄清主动语态与被动语态的差异，通过练习和运用加以巩固情感目标1、通过本单元学习使学生懂得人类的科学发明创造了丰富的物质文明；2、培养学生的创造发明的能力的愿望。教学重、难点一般过去时态的被动语态1、基本结构：助动词be（was/were）+及物动词的过去分词Athiefwascaughtlastnight.Theywereaskedtospeakatthemeeting.肯定式：Itwasmade.否定式：Itwasnotmade.疑问式：Wasitmade?No,itwasn’tYes,itwas2、主动语态被动语态1）主动结构的宾语变为被动结构的主语；2）主动结构的谓语动词由主动语态变为被动语态；3）主动结构的主语变为介词by的宾语，组成介词短语，放在被动结构中谓语动词之后。在动作的执行者无须说明或不必强调时，by短语可以省略。4）主动语态、被动语态两种时态要保持一致：Werepairedthemotor.Themotorwasrepairedbyus.教学安排4课时第一课时：SectionA:1a,1b,1c,2a,2b,2c第二课时：SectionA:3a,3b,4第三课时：SectionB:1a,1b,2a,2b,2c,3a第一课时：SectionB:3b,4a,4bandSelfCheckUnit9第二课时Teachingaims学习一般过去时的被动语态和特殊疑问句。Teachingofnewlesson1.Warm-upAskthestudentstobefamiliarwiththewordsbelowaccordingtothepicturesoncomputer.Telephone,calculator,car,personalcomputer,TV,electriclight,lightbulb,alarm,clock,microwaveoven,electricslipper.2.Presentation1)教学Whenwasthecarinvented?Itwasinventedin……Choosethethreeinventionsoftheseandaskstudentstoguesswheneachonewasinvented.Forexample,youmightchoosecar,telephone,andpersonalcomputer.Haveseveraldifferentstudentsguessandwritethedatesontheboard.Asktheclasstorepeatthequestionsandanswers.[T=Teacher,S=Student]T:Whenwasthecarinvented?(Classrepeat.)T:Good.NowJackie,whatwasyourguess?S1:1900T:OK.Jackie,repeatafterme.Thecarwasinventedin1900.Repeattheprocesswithseveraldifferentinventions.Atlast,makestudentsfindouttherealdates.2)教学Whowerethelightbulbsinventedby?Andwhataretheyusedfor?呈现Edisonandlightbulbs的画面。TellthestudentsEdisoninventedlightbulbs.Thenaskthestudentstoanswerthequestionsbelow.T:Whowerelightbulbsinventedby?(Classrepeat)T:Good.NowClassrepeatafterme.TheywereinventedbyEdison.3)教学操练1a,1c,2c学生看书本上1a的图画，根据图画，把1a,1c,2c中的语言点综合起来，叫学生相互间回答问题。并用刚刚学到的目标句型来操练。最后，抽查几对学生，让他们在全班面前，按要求进行对话。4)教学1b,2a,2b首先，帮助学生明确本题的要求。接着，听力练习，学生根据录音内容完成1b,2aand2b.最后，重放一遍录音内容，学生跟读。3、ConsolidationandExtension.完成一个任务Asksomestudentstoreadaboutaninventionusinganencyclopediaorotherbookfromthelibrary,orbylookingupinformationontheInternet.Havethestudentswriteupashortreportanddrawasimplepictureoftheinventionorbringinaphotoofit.Askeachstudentstoshowthepictureandreadhisorherreporttotheclass.Homework1、根据时间和人物写出发明物。1)1885____________2)1876________________3)1927____________4)1976________________5)JulieThompson__________6)ChelseaLanmon______Unit9第三课时Teachingaims1、熟练掌握被动语态用法。2、学会用被动语态表达对创造和发明事物的认识和看法。Teachingofnewlesson1.Warm–up:Askthestudentstopracticespeaking.A:Whenwas……invented?B:Itwasinventedin……A:Whowasitinventedby?B:Itwasinventedby……A:Whatisitusedfor?B:Itisusedfor……2.Presentation.1)教学helpful,annoyingAskstudentstogive...
