英语人教版九年级全册Unit6 When was it invented 教案

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1、Unit6Whenwasitinvented?SectionA1(1a-1c)一、教学目标：1.知识与技能：1)Masterthesentences:—Whenwasthetelephoneinvented?—Ithinkitwasinventedin1876.2)Beabletotalkaboutthehistoryofinventionsusingthepassivevoiceofpasttense.3)Trainstudents’listeningandcommunicativeskills.2.过程与方法：1.Leadinthetargetlangua

2、gethroughlisteningandspeakingpractice.2.Autonomousandcooperativeapproach.3.情感态度与价值观：Learnaboutthehistoryofsomegreatinventions.Leadstudentstoknowtheimportanceofinventionsinourdailylife.二、教学重难点1.教学重点：1)Masterthekeysentences.2)Learntotalkaboutthehistoryofinventionsusingthepassivevoiceo

3、fpasttense.3)Improvestudents’listeningandspeakingskills.2.教学难点：Howtotalkaboutthehistoryofinventionsusingthepassivevoiceofpasttense.三、教具ppt,somehandouts四、教学过程Step1情景导入Step2自主学习1.Showthepicturesofthreeinventionsandinventorsonthescreen:acar,aTVandatelephone.Givestudentsanexample:“Benzi

4、nventedthefirstcar.→ThefirstcarwasinventedbyBenz.”1.Askstudentstochangetheothertwosentencesintopassivevoice.2.Givestudentsanexample:“IthinktheTVwasinventedbeforethecar.”3.Finish1a.Askstudentstoguessingroupsandmakeupconversationsaccordingto1a.4.Checkstudents’conversations.5.Finish1b.

5、Listenandmatchtheinventionswiththeyears.6.Readtheconversationin1cingroups.7.Chooseaninventiontotalkabout,liketheconversationin1c.Step3我的疑问学生质疑Step4合作探究1.观察下面的句子，完成下面的空格。Englishisspokenbymanypeoplenow.Theshirtsaremadeofcotton.ThetelephonewasinventedbyBellin1876.Manyquestionswereanswe

6、redinthemeetingyesterday.被动语态的构成：被动语态由_______________构成。助动词be有_____、_____和_____的变化。被动语态的时态：被动语态的时态通过_____来体现，它必须与主语的人称，数保持一致。一般现在时的被动语态由__________＋__________构成；一般过去时的被动语态由__________＋__________构成。2.主动语态如何转换成被动语态。观察下面几组句子，完成下面的空格。ManypeoplespeakEnglish.→Englishisspokenbymanypeople.Bel

7、linventedthetelephonein1876.→ThetelephonewasinventedbyBellin1876.Marymadethreekitesyesterday..→ThreekitesweremadebyMaryyesterday.第一，首先把主动句中的宾语转换为被动句中的_______.第二，把动词变为被动式结构_____________________，be动词的时态要按照原来主动语态的时态保持______，而且动词的人称数要随着新的主语而_______。第三，原主动语态中的主语在被动语态里用_____连接。Step5检测训练1.

8、课中完成课堂目标达成。1.课后完成巩固