小学英语基数词序数词.ppt

,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,one,two,three,four,five,six,seven,eight,seven,six,three,zero,nine,two,one,eight,four,five,numbers,seven,six,three,zero,nine,two,one,eight,four,five,Numbers are widely used.,Hello ， 86861873 -,Title,Number song,Lets sing a song ！,Lets count!,1-10 one two three four five six seven eight nine ten 11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteen,Lets review,10,20,30,40,50,60,70,80,90,100,ten,thirty,forty,seventy,sixty,One hundred,fifty,ninety,twenty,eighty,Dragon,1-100,1,3,2,4,Look and Read,100 one hundred,1,000 one thousand,1,000,000 one million,1,000,000,000 one billion,100 2,000 30,000 400,000 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,million,billion,one hundred one thousand ten thousand one hundred thousand one million ten million one hundred million one billion ten billion one hundred billion tens/ hundreds/thousands/ millions 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 three,103,789,456,123,625 six hundred and twenty-five 8,961 eight thousand, nine hundred and sixty-one 95,680 ninety-five thousand, six hundred and eighty,Look and Practice,Look 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 hundred and ten,8,3,9,1,What is the largest / smallest 4-digit number?,9831,1389,Lets do a practice!,face to face number to number,one -first,two-second,three-third,four-fourth,five-fifth,six-sixth,seven-seventh,eight-eighth,nine-ninth,ten-tenth,序数词,twenty-twentieth,thirty-thirtieth,forty-fortieth,fifty-fiftieth,sixty-sixtieth,seventy-seventieth,eighty-eightieth,ninety-ninetieth,tenth,ninth,eighth,seventh,sixth,fifth,fourth,third,second,first,ordinal numbers,tenth,ninth,eighth,seventh,sixth,fifth,fourth,third,second,first,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。,ordinal numbers(序数词 ),Can you write their ordinal numbers?,2,5,44,12,9,18,72,19,101,90,40,14,8,100,1000,December 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 ha