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1、新泰实验中学11-12学年九年级英语上册Unit9学案Unit9Whenwasitinvented?SectionA教师寄语:It’snevertoolatetomend.亡羊补牢,犹为未晚。学习目标:学习一般过去时的被动语态和特殊疑问句。教学重难点:一般过去时态的被动语态基本结构: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,i
2、twas学习过程:1.情境导入:warm-upAskthestudentstobefamiliarwiththewordsbelowaccordingtothepicturesoncomputer.Telephone,calculator,car,personalcomputer,TV,electriclight,lightbulb,alarm,clock,microwaveoven,electricslipper.2.自主学习:presentation1)教学Whenwasthecarinvented?Itwasinventedin……Choosethethre
3、einventionsoftheseandaskstudentstoguesswheneachonewasinvented.Forexample,youmightchoosecar,telephone,andpersonalcomputer.Haveseveraldifferentstudentsguessandwritethedatesontheboard.Asktheclasstorepeatthequestionsandanswers.[T=Teacher,S=Student]T:Whenwasthecarinvented?(Classrepeat.)S1:
4、1900T:OK.Jackie,repeatafterme.Thecarwasinventedin1900.Repeattheprocesswithseveraldifferentinventions.Atlast,makestudentsfindouttherealdates.2)教学Whowerethelightbulbsinventedby?Andwhataretheyusedfor?呈现Edisonandlightbulbs的画面。TellthestudentsEdisoninventedlightbulbs.Thenaskthestudentstoans
5、werthequestionsbelow.T:Whowerelightbulbsinventedby?(Classrepeat)T:Good.NowClassrepeatafterme.TheywereinventedbyEdison.3.合作探究:1)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。2)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
6、后,重放一遍录音内容,学生跟读。4、拓展创新:ConsolidationandExtension.完成一个任务Asksomestudentstoreadaboutaninventionusinganencyclopediaorotherbookfromthelibrary,orbylookingupinformationontheInternet.Havethestudentswriteupashortreportanddrawasimplepictureoftheinventionorbringinaphotoofit.Askeachstudentstoshow
7、thepictureandreadhisorherreporttotheclass.5.梳理知识:本单元主要学习了一般过去时的被动语态,包括其结构与用法。利用几项发明创造练习这一知识,最后用一篇小报告来完成写作练习。6.达标测试: (一)根据时间和人物写出发明物。1)1885____________2)1876________________3)1927____________4)1976________________5)JulieThompson_________6)ChelseaLanmon______(二)汉泽英1)计算机是何时发明的?2)谁发明了计算机?
8、3)计算机