1、When is the art show? Part B Lets learn & Ask and write,Unit 4,Revision,Ask and answer,Lets read,1st,2nd,3rd,4th,5th,Presentation,Lets learn,点击图片，播放视频,或点击此处播放视频,She is an actress. When is her birthday?,Its on September 12th.,9月12日,简写：12th,twelfth,基数词：twelve,twelfth,基数词变序数词口诀：“基”变“序”有规律，ve要用f替，再加th.,
2、How old is she? When is her birthday?,Its on April 20th.,1991年4月20日,twentieth,twentieth,简写：20th,基数词：twenty,基数词变序数词口诀：“基”变“序”有规律，整十先把词尾y改为ie,再加th.,Is she beautiful? When is her birthday?,Its on January 30th.,1月30日,thirtieth,简写：30th,thirtieth,基数词：thirty,基数词变序数词口诀：“基”变“序”有规律，整十先把词尾y改为ie,再加th.,He is a p
3、layer. How old is he? When is his birthday?,Its on September 21st.,1998年9月21日,twenty-first,twenty- first,简写：21st,基数词：twenty-one,基数词变序数词口诀：“基”变“序”有规律，表示“第几十几”，只变个位就可以。,He is a singer. Hes from China. When is her birthday?,23rd,twenty-third,Its on July 23rd.,7月23日,twenty-third,简写：23rd,twenty- third,基数
4、词：twenty-three,基数词变序数词口诀：“基”变“序”有规律，表示“第几十几”，只变个位就可以。,Sum-up,Look and write,Practice,Group work,Make a survey.,调查组内成员的生日，看哪一组同一月过生日的人数多，则获胜。,Exercise,我会排排序,1._ 2._ 3._ 4._ 5._,twelfth,twentieth,twenty-first,twenty-third,thirtieth,Summary,（听、说、认读、写）词汇： twelfth (12th) twentieth (20th) twenty-first (21st) twenty-third (23rd) thirtieth (30th),
