优质课教案Unit6Whenwasitinvented?Period1SectionA1a---1c九年级英语Whenwasitinvented?Period1SectionA1a---1c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,itwas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……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?呈现Edisonandlightbulbs的画面。TellthestudentsEdisoninventedlightbulbs.Thenaskthestudentstoanswerthequestionsbelow.T:Whowerelightbulbsinventedby?(Classrepeat)T:Good.NowClassrepeatafterme.TheywereinventedbyEdison.3.合作探究：1)听力操练1a,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)编对话1c,4、拓展创新：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。5.达标测试：（一）翻译时间1)1885____________2)1876________________3)1927____________4)1976________________（二）汉泽英1)计算机是何时发明的？2)谁发明了计算机？3)计算机是用来做什么？4)你认为什么是最有用的发明？5)它能够给人们更多时间工作和玩。典型例题解析：1.--Whataniceclassroom!--It____everyday.A.iscleaningB.hascleanedC.mustcleanD.iscleaned解析：推测这句话的意思应该是“它每天都被打扫”，考查被动语态的结构be+动词的过去分词。因此答案应该选D。中考连接：1.--Lookatthesignontheright.--Oh,smoking____here.A.doesn’tallowB.isn’tallowedC.didn’tallowD.wasn’tallowed2.--Willyoucometothedinnerparty?--