小学英语基数词充数词讲解课件.pptx

1、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。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 f

2、ive six seven eight nine ten 11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteenLets review tenthirtyfortyseventysixtyOne hundredfiftyninetytwentyeightyDragon 1-1001324Look and Read100 one hundred1,000 one thousand1,000,000 one million1,000,000,000 one billion1002,00030,

3、000400,0005,000,00060,000,000700,000,0008,000,000,00090,000,000,000100,000,000,000 Can you read them?hundredthousandmillionbilliononehundredonethousandtenthousandonehundredthousandonemilliontenmilliononehundredmilliononebilliontenbilliononehundredbillion tens/hundreds/thousands/millions of 一一百百 一一千千

4、 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:one hundred and twenty-three billion,Step2:four hundred and fifty-six million,Step3:seven hundred and eighty-nine thousand,Step4:one hundred and three103789456123,625 six hundred and twenty-five 8,961 eight thousand,n

5、ine 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 hund

6、red and ten 8391What is the largest/smallest 4-digit number?98311389Lets do a practice!face to facenumber to number one-firsttwo-secondthree-thirdfour-fourthfive-fifthsix-sixthseven-seventheight-eighthnine-ninthten-tenth序数词twenty-twentieththirty-thirtiethforty-fortiethfifty-fiftiethsixty-sixtiethsev

7、enty-seventietheighty-eightiethninety-ninetieth tenthnintheighthseventhsixthfifthfourththirdsecondfirstordinalordinal numbers numbers tenthnintheighthseventhsixthfifthfourththirdsecondfirst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”，词尾加上，词尾加上“th”，(tw

8、enty,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 numbersordinal numbers(序数词)Can you write their ordinal numbers?254412918721910190 401481001000December is the _ month of the year.Monday is the _ day of the week.English is spoken by most people as their _ language in the USA,Great Britai

9、n,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: