小学英语基数词序数词课件-PPT.ppt

1、小学英语基数词序数词课件2什么是数词？ 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基数词；表示顺序的数词叫序数词序数词。3基数词基数词onetwothreefourfivesixseveneight4sevensixthreezeroninetwooneeightfourfive5numberssevensixthreezeroninetwooneeightfourfive6Numbers are widely used. Hello ，86861873 -7TitleNumber songLets sing a song ！89Lets count!

2、 1-10 one two three four five six seven eight nine ten 11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteen10Lets review tenthirtyfortyseventysixtyOne hundredfiftyninetytwentyeighty11Dragon 1-100121324Look and Read100 one hundred1,000 one thousand1,000,000 one million1,00

3、0,000,000 one billion131002,00030,000400,0005,000,00060,000,000700,000,0008,000,000,00090,000,000,000100,000,000,000 Can you read them ?hundredthousandmillionbillion14onehundredonethousandtenthousandonehundredthousandonemilliontenmilliononehundredmilliononebilliontenbilliononehundredbillion tens/ hu

4、ndreds/thousands/ millions of 一百一百 一千一千 一万一万 十万十万 一百万一百万 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：15,Step1:one hundred and twenty-three billion,Step2:four hundred and fifty-six million,Step3:seven hundred and eighty-nine thousand,Step4:one hundred and three103789456123,16 625 six hu

5、ndred and twenty-five 8,961 eight thousand, nine hundred and sixty-one 95,680 ninety-five thousand, six hundred and eightyLook and Practice17Look 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 nine

6、ty million, five hundred and ten thousand ,eight hundred and ten 188391What is the largest / smallest 4-digit number?9831138919Lets do a practice! face to facenumber to number 20one -firsttwo-secondthree-thirdfour-fourthfive-fifthsix-sixthseven-seventheight-eighthnine-ninthten-tenth序数词21twenty-twent

7、ieththirty-thirtiethforty-fortiethfifty-fiftiethsixty-sixtiethseventy-seventietheighty-eightiethninety-ninetieth22 tenthnintheighthseventhsixthfifthfourththirdsecondfirst23ordinalordinal numbers numbers tenthnintheighthseventhsixthfifthfourththirdsecondfirst24一、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

8、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”，词尾加上，词尾加上“th”，(twenty,thirty,-ninety)若是遇到几十几，只变个位就可若是遇到几十几，只变个位就可以。以。v ordinal numbers(ordinal numbers(序数词 )25Can you write their ordinal numbers?254412918721910190 40148100100026December is the _ month of the year.Monday is the _ day of the wee

9、k.English is spoken by most people as their _ language in the USA, Great Britain, Australian, and Canada.The Games of the _ Olympic in 2008 will be held in the city of Beijing.Im hungry. Ive eaten three apples. Would you please give me a_ one?At the beginning of the _ century the worlds population has passed 6 billion.He got off this bus and got on a _ one. twelfth secondfirst twenty-ninth fourthtwenty-firstsecondPractice: