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1、数词什么是数词？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词；表示顺序的数词叫序数词。基数词onetwothreefourfivesixseveneightsevensixthreezeroninetwooneeightfourfivenumberssevensixthreezeroninetwooneeightfourfiveNumbersarewidelyused.Hello，86861873---Let’scount!1-10onetwothreefourfivesixseveneight
2、nineten11-19eleventwelvethirteenforteenfifteensixteenseventeeneighteennineteen1one[w^n] 2two:[tu:] 3three:[θri:]4four:[fo:] 5five:[faiv]6six:[siks]7seven:['seven]8eight:[eit]9nine:[nain] 10ten:[ten]11eleven:[i'leven]12twelve:[twelv]13thirteen:['θə:'ti:n] 14fourteen:['fo
3、:'ti:n]15fifteen:['fif'ti:n] 16sixteen:['siks'ti:n]17seventeen:['seven'ti:n]18eighteen:['ei'ti:n]19nineteen['nain'ti:n]20twenty:['twenti]Let’sreview102030405060708090100tenthirtyfortyseventysixtyOnehundredfiftyninetytwentyeighty30thirty['θe:ti]40forty['fo:ti]50fifty['fi
4、fti]60sixty['siks'ti]70seventy['seven'ti]80eighty['ei'ti]90ninety['nainti]100onehundred['handred]1000onethousand['θauzənd]1000000onemillion:['miljən]10000000000nebillion:['biljən]Dragon1-1001324LookandRead100onehundred1,000onethousand1,000,000onemillion1,000,000,000oneb
5、illion1002,00030,000400,0005,000,00060,000,000 700,000,0008,000,000,00090,000,000,000100,000,000,000Canyoureadthem?hundredthousandmillionbillionone hundredonethousandten thousandone hundred thousandonemillionten millionone hundred milliononebillionten billiono
6、ne hundred billiontens/hundreds/thousands/millionsof一百一千一万十万一百万一千万一亿十亿一百亿一千亿数十/百/千/百万看谁译得快：,Step1:onehundredandtwenty-threebillion,Step2:fourhundredandfifty-sixmillion,Step3:sevenhundredandeighty-ninethousand,Step4:onehundredandthree103789456123,,625sixhundredandtwenty-
7、five8,961eightthousand,ninehundredandsixty-one95,680ninety-fivethousand,sixhundredandeightyLookandPracticeLookandPractice6,302,876sixmillion,threehundredandtwothousand,eightyhundredandseventy-six45,690,510,810forty-fivebillion,sixhundredandninetymillion,fivehundredandte
8、nthousand,eighthundredandten8391Whatisthelargest/smallest4-digitnumber?98311389Let’sdoapractice!facetofacenumb
