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 eleven twelve 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 4
3、00,000 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/mil
4、lions 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 la
6、rgest/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-eightiet
7、hninety-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:
