基数词和序数词用法

数词2021/5/271什么是数词？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。

2021/5/272基数词onetwothreefourfivesixseveneight2021/5/273sevensixthreezeroninetwooneeightfourfive2021/5/274numberssevensixthreezeroninetwooneeightfourfive2021/5/275Numbersarewidelyused.

Hello，86861873---2021/5/276Let’scount!1-10onetwothreefourfivesixseveneightnineten11-19eleven

twelvethirteen

forteenfifteensixteen

seventeeneighteennineteen2021/5/2771one[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:'ti:n]

15fifteen:['fif'ti:n]

16sixteen:['siks'ti:n]

17seventeen:['seven'ti:n]

18eighteen:['ei'ti:n]

19nineteen['nain'ti:n]20twenty:['twenti]

2021/5/278Let’sreview102030405060708090100tenthirtyfortyseventysixtyOnehundredfiftyninetytwentyeighty2021/5/27930thirty['θe:ti]40forty['fo:ti]

50fifty['fifti]

60sixty['siks'ti]

70seventy['seven'ti]

80eighty['ei'ti]90ninety['nainti]

100onehundred['handred]1000onethousand['θauzənd]1000000onemillion:['miljən]10000000000nebillion:['biljən]2021/5/2710Dragon1-1002021/5/27111324LookandRead100onehundred1,000onethousand1,000,000onemillion1,000,000,000onebillion2021/5/2712100

2,000

30,000

400,000

5,000,000

60,000,000

700,000,000

8,000,000,000

90,000,000,000

100,000,000,000

Canyoureadthem?hundred

thousand

millionbillion2021/5/2713one

hundredone

thousandten

thousandone

hundred

thousandone

millionten

millionone

hundred

million

one

billionten

billionone

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：2021/5/2714,Step1:onehundredandtwenty-three

billion,Step2:fourhundredandfifty-six

million,Step3:sevenhundredandeighty-nine

thousand,Step4:onehundredandthree103789456123,,2021/5/2715625sixhundredandtwenty-five8,961eightthousand,ninehundredandsixty-one95,680ninety-fivethousand,sixhundredandeightyLookandPractice2021/5/2716LookandPractice

6,302,876sixmillion,threehundredandtwothousand,eightyhundredandseventy-six

45,690,510,810forty-fivebillion,sixhundredandninetymillion,fivehundredandtenthousand,eighthundredandten2021/5/27178391Whatisthelargest/smallest4-digitnumber?983113892021/5/2718Let’sdoapractice!facetofacenumbertonumber2021/5/2719one---firsttwo---secondthree---thirdfour---fourthfive---fifthsix---sixthseven---seventheight---eighthnine---ninthten----tenth序数词2021/5/2720twenty---twentieththirty---thirtiethforty---fortiethfifty---fiftiethsixty---sixtiethseventy---seventietheighty---eightiethninety---ninetieth2021/5/2721tenthnintheighthseventhsixthfifthfourththirdsecondfirst2021/5/2722ordinalnumberstenthnintheighthseventhsixthfifthfourththirdsecondfirst2021/5/2723一、二、三，特殊记，加th从4起，八少“t”，九去“e”，“ve”要用“f”替，(five,twelve)见“y”变成“i”和“e”，词尾加上“th”，(twenty,thirty,---ninety)若是遇到几十几，只变个位就可以。

ordinalnumbers(序数词)2021/5/2724Canyouwritetheirordinalnumbers?2544129187219101904014810010002021/5/2725Decemberisthe________monthoftheyear.Mondayisthe_______dayoftheweek.Englishisspokenbymostpeopleastheir_______languageintheUSA,GreatBritain,Australian,andCanada.TheGamesofthe_____________Olympicin2008willbeheldinthecityofBeijing.I’mhungry.I’veeatenthreeapples.Wouldyoupleasegivemea_______one?Atthebeginningofthe_____________centurytheworld’spopulationhaspassed6billion.Hegotoffthisbusandgotona______o