四年级上册英语课件Unit9It’sonehundred湘少三起14.ppt

Unit9Itsonehundred,1one2two3three4four5five6six7seven8eight9nine10ten11eleven12twelve,Trytocountthenumbers（数一数钟面上的数字）,13thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nineteen,13-19数词构成方法：在有关的个位数词词尾加-teen,Letsread,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen,Readandcount,19,1,nineteen,one,+,plus,=,is,20,twenty,twenty+one=,twenty-twotwenty-threetwenty-fourtwenty-fivetwenty-sixtwenty-seventwenty-eighttwenty-nine,十位数数词构成：整十位数数词后加个位数词，中间用连字符号“-”连接。,twenty-one,12+8=24+6=38+2=42+8=53+7=67+3=71+9=82+8=99+1=,20twenty,30thirty,40forty,50fifty,60sixty,70seventy,80eighty,90ninety,100ahundred,整十位数数词20-90构成：个位数词词尾加-ty,Sayarhyme,英语数词不难记，找出规律就容易。一至十二词各异，一个一个单独记。后面加teen变十几，thirteen，fifteen看仔细。Eighteen只有一个t，两个音节念清晰。二十至九十后加ty，twenty不同重点记。Forty去掉字母u，thirty，fifty更出奇。十位数后个位数，表示数值几十几，按序排列不费力，连字符号莫丢弃。巧学妙记加努力，hundred是你的好成绩！,超人大考验!,Doyouwanttobe(成为)superman?Therearefourchallenges(挑战).Haveatry!,第一个挑战:Whatcanyousee?(快速说出你看见了什么?),0,第二个挑战:,Standingononefoot.单脚站立!参加比赛的同学，闭上眼睛，单腿离地。其余同学边数数one，two，three边给他们鼓劲，脚最后一个落地的学生为优胜。,第三个挑战:抢答,Howmanyboysarethereintheclassroom?Howmanygirlsarethereintheclassroom?Howmanyteachersarethereintheclassroom?,Howmanydays(天)arethereinaweek（一周）?Seven.Howmanyhours(小时)aretherei