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1、Whats your luncky number?你的幸运数字是什么？one hundredtwentythirtyfortyfiftysixtyseventyeightyninety12+8=24+6=38+2=42+8=53+7=67+3=71+9=82+8=99+1=20 twenty 30 thirty40 forty 50 fifty60 sixty70 seventy80 eighty90 ninety100 a hundred整十位数数词20-90 构成：个位数词词尾加-ty找规律two twelve three thirteen four fourteenfive fiftee
2、n seven seventeensix sixteeneight eighteennine ninteentwentythirtyfortyfiftysixtyeightyninty表示十几的数字都是以teen 结尾，发/ti:n/的音。表示几十的数字都是以ty 结尾，发/ti/的音。seventySay a rhyme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
3、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！Can you say it in English?2132435465twenty-onethirty-twoforty-threefifty-foursixty-five76879899100seventy-sixeighty-sevenninety-eightninety-nineone hundredtwenty-two twenty-three twenty-four twenty-fivetwenty-six twenty-seventwenty-eight twenty-ninet
4、wenty+one=twent y-one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。25465391688935742792Practice 请用英语表达下列算式21+11=3220+23=4341+13=5456+9=6565+33=88Twenty-one and eleven is thirty-two.Twenty and twenty-three is forty-three.Forty-one and thirteen is fifty-four.Fifty-six and nine is sixty-five.Sixty-five and thirty-
5、three is eighty-eight.andisLook and say20+11=3213+3=1634+10=4437+63=10050+23=7354+32=8612+59=7198+2=100Look and judgeForty-six and fifty-four is ninety.Twenty-four and ten is thirty-four.Sixteen and sixty is sixty-six.Thirteen and fifty-four is sixty-six.超人大考验!Do you want to be(成为)superman?There are three challenges(挑战).Have a try!Standing on one foot.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。挑战:New wordhomeworkrightwrong