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onetwothreefourfivesixseveneightsevensixthreezeroninetwooneeightfourfivenumberssevensixthreezeroninetwooneeightfourfiveNumbers are widely used.Hello，86861873-TitleNumber songLets sing a song！Lets count!1-10 one two three four five si
2、x seven eight nine ten 11-19 eleventwelve thirteenforteen 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 billion100 2,000 30,000 40
3、0,000 5,000,000 60,000,000 700,000,000 8,000,000,000 90,000,000,000 100,000,000,000 Can you read them?hundred thousand millionbillionone hundredone thousandten thousandone hundred thousandone millionten millionone hundred million one billionten billionone hundred billion tens/hundreds/thousands/mill
4、ions of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: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,nine hundred and sixty-one 95,
5、680 ninety-five thousand,six hundred and eightyLook and PracticeLook and Practice6,302,876 six million,three hundred and two thousand,eighty hundred and seventy-six45,690,510,810 forty-five billion,six hundred and ninety million,five hundred and ten thousand,eight hundred and ten 8391What is the lar
6、gest/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-sixtiethseventy-seventietheighty-eightieth
7、ninety-ninetieth tenthnintheighthseventhsixthfifthfourththirdsecondfirstordinal numbers tenthnintheighthseventhsixthfifthfourththirdsecondfirst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。v ordinal numbers(序数词)Can you write their
8、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 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:
