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1、数词分基数词（cardinalnumbers）和序数词（ordinalnumbers）一、基数词（cardinalnumbers）1~12onetwothreefourfivesixseveneightnineteneleventwelve13~19-teenthirteenfourteenfifteensixteenseventeeneighteennineteen20~90-tytwentythirtyfortyfiftysixtyseventyeightyninety21~99twenty-onethirty-twoforty
2、-threeninety-nine100201122onehundredtwohundredandoneonehundredandtwenty-one1,0001,53210,000100,000onethousandonethousandfivehundredandthirty-twotenthousandonehundredthousand1,000,0001,000,000,000onemilliononebillionGrammar二、序数词（ordinalnumbers）123first(1st)second(2nd)th
3、ird(3rd)4~19基数词后加-thfourthfifthsixthseventheighthninthtentheleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenth20~90变-ty为-tiethtwentieththirtieth…….Ninetieth21~99十位数用基数词，个位数用序数词twenty-firstfifty-fourth…….ninety-ninth1001,0001,000,0001,00
4、0,000,000直接加-thonehundredthonethousandthonemillionthonebillionth2081,937只在个位数用序数词，其它用基数词。twohundredandeightonethousandninehundredandthirty-seventhGrammar用英语读出下列数字：1112267051，0984，56875，137425，7121，306，5272，032，67836，441，000900，745，0221，280，532，866练习onehundredandonetwoh
5、undredandtwenty-sixsevenhundredandfiveonethousandandninety-eightfourthousand,fivehundredandsixty-eightseventy-fivethousand,onehundredandthirty-sevenfourhundredandtwenty-fivethousand,sevenhundredandtwelveonemillion,threehundredandsixthousand,fivehundredandtwenty-seventw
6、omillion,thirty-twothousand,sixhundredandseventy-eightthirty-sixmillion,fourhundredandforty-onethousandninehundredmillion,sevenhundredandforty-fivethousand,andtwenty-twoonebillion,twohundredandeightymillion,fivehundredandthirty-twothousand,eighthundredandsixty-six用基数词或
7、序数词填空：1.The___________dayoftheyearisNewYear’sDay.2.There’sonly__________Sundayinaweek.3.July’sthe____________monthoftheyear.4.Threetimesfourequals____________.5.Thenumber195hasthreedigits.The_________digitisa‘nine’andthe________digitisa‘five’.6.NextWednesdayismyelevent
8、hbirthday.ThatmeansI’llbe___________yearsoldbythen.firstoneseventhtwelvesecondthirdeleven练习7.I’vejustdonethefourthexe
