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1、Unit8Whenisyourbirthday?SectionA2a-2eLiJianxia2014.12.17LeadinLet’ssingthesong:Happybirthdaytoyou!序数词:表示事物顺序的词,其前常加定冠词the。数字序数词变化规则例词1、2、3特殊记One→first第一two→second第二；Three→third第三4～19基数词词尾加-th特殊：five→fifth第五；eight→eighth第八；nine→ninth第九twelve→twelfth第十二一般：fo
2、ur→fourth第四nineteen→nineteenth第十九20,3040,50,60,70,80,90-ty变为-tie再加thtwenty→twentieth第二十thirty→thirtieth第三十forty→fortieth第四十fifty→fiftieth第五十sixty→sixtieth第六十seventy→seventieth第七十eighty→eightieth第八十ninety→ninetieth第九十其余两位数将相应基数词的个位改为基数词twenty-one→twenty-fir
3、st第二十一；thirty-nine→thirty-ninth第三十九；forty-six→forty-sixth第四十六【记忆口诀】基变序，有规律，加上-th莫迟疑。一、二、三特殊记，结尾跟着t,d,d。八去t,九去e,y结尾变ie。five、twelve俩兄弟，常以f代ve。遇到几十几，只变个位就可以。序数词表顺序，一般须加定冠词。Listenandrepeat.2a1st2nd3rd4th5th6th7th8th9th10th11th12th13th14th15th16th17th18th19th20
4、th21st22nd23rd24th25th26th27th28th29th30th31stListenandcirclethenumbersyouhearin2a.2b1st2nd3rd4th5th6th7th8th9th10th11th12th13th14th15th16th17th18th19th20th21st22nd23rd24th25th26th27th28th29th30th31stNameMonthDateAliceJuly4thFrankAugust22ndEricJanuary5thJa
5、neSeptember17thListenagain.Matchthenames,monthsanddates.2c2dPairworkTakeaboutthechildren’sbirthdayin2c.Thenaskyourpartneraboutthebirthdaysinhisorherfamily.WhenisAlice’sbirthday?HerbirthdayisonSeptember5th.AlicePracticeWhenis____’sbirthday?Her/Hisbirthdayis
6、on...FrankEricJaneWhenis…’sbirthday?Her/Hisbirthdayison….It’son….Whenisyourfather’sbirthday?Hisbirthdayison...Whenisyour____’sbirthday?His/Herbirthdayison...Readthedialoguein2e.Thenmatchthethingswiththerightplaces.BillAge年龄AlanBirthday生日twelvethirteeninAug
7、ustthisafternoonBill:Hi,Alan.Happybirthday!Alan:Thankyou,Bill.Bill:So,howoldareyou,Alan?Alan:I’mtwelve.Howoldareyou?Bill:I’mthirteen.Alan:Whenisyourbirthday?Bill:MybirthdayisinAugust.Alan:Well,doyouwanttocometomybirthdayparty?Bill:Oh,yes.Whenisit?Alan:Atth
8、reethisafternoon.Bill:OK,great.Seeyou!PairworkRole-playtheconversation.2e1.Rememberthewordswehavelearnedtoday.2.Makesomeconversationsaboutone’sbirthdayparty.GoodbyeThankyou!
