数数 词词什么是数词？表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。表示数目多少的数词叫基数基数词；表示顺序的数词叫序数序数词。基数词基数词onetwothreefourfivesixseveneightsevensixthreezeroninetwooneeightfourfivenumberssevensixthreezeroninetwooneeightfourfiveNumbers are widely used. Hello，86861873-TitleNumber songLets sing a song ！Lets count!1-10 one two three four five six seven eight nine ten 11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteenLets review tenthirtyfortyseventysixtyOnehundredfiftyninetytwentyeightyDragon 1-1001324Look and Read100 one hundred1,000 one thousand1,000,000 one million1,000,000,000 one billion1002,00030,000400,0005,000,00060,000,000700,000,0008,000,000,00090,000,000,000100,000,000,000Can you read them ?hundredthousandmillionbilliononehundredonethousandtenthousandonehundredthousandonemilliontenmilliononehundredmilliononebilliontenbilliononehundredbillion tens/ hundreds/thousands/ millions of一一百百一一千千一万一万十万十万一一百万百万一千一千万万一亿一亿十亿十亿一百亿一百亿一千亿一千亿数十数十/百百/千千/百万百万看谁译得快：看谁译得快：,Step1:onehundredandtwenty-threebillion,Step2:fourhundredandfifty-sixmillion,Step3:sevenhundredandeighty-ninethousand,Step4:onehundredandthree103789456123, 625 six hundred and twenty-five 8,961 eight thousand, nine hundred and sixty-one 95,680 ninety-five thousand, six hundred and eightyLook and PracticeLook and Practice 6,302,876 six million, three hundred and two thousand, eighty hundred and seventy-six 45,690,510,810 forty-five billion ,six hundred and ninety million, five hundred and ten thousand ,eight hundred and ten 8391What is the largest / smallest 4-digit number?98311389Lets do a practice!facetofacenumbertonumberone -firsttwo-secondthree-thirdfour-fourthfive-fifthsix-sixthseven-seventheight-eighthnine-ninthten-tenth序数序数词twenty-twentieththirty-thirtiethforty-fortiethfifty-fiftiethsixty-sixtiethseventy-seventietheighty-eightiethninety-ninetiethtenthnintheighthseventhsixthfifthfourththirdsecondfirstordinalordinal numbers numberstenthnintheighthseventhsixthfifthfourththirdsecondfirst一、二、三，特殊记，一、二、三，特殊记，加加th从从4起，起，八少八少“t，九去，九去“e，“ve要用要用“f替，替，(five, twelve)见见“y变成变成“i和和“e，词尾，词尾加上加上“th，(twenty,thirty,-ninety)假设是遇到几十几，只变个位就假设是遇到几十几，只变个位就可以。可以。vordinal numbersordinal numbers( (序数词序数词 ) )Can you write their ordinal numbers?254412918721910190401481001000Decemberisthe_monthoftheyear.Mondayisthe_dayoftheweek.Englishisspokenbymostpeopleastheir_languageintheUSA,GreatBritain,Australian,andCanada.TheGamesofthe_Olympicin2021willbeheldinthecityofBeijing.Imhungry.Iveeatenthreeapples.Wouldyoupleasegivemea_one?Atthebeginningofthe_centurytheworldspopulationhaspassed6billion.Hegotoffthisbusandgotona_one. twelfth secondfirst twenty-ninth fourthtwenty-firstsecondPractice: