1、数 词,1.什么是数词？,数词分为基数词和序数词。表示数量的数词叫基数词；表示顺序的数词叫序数词。,2.数词的分类,表示数量或顺序的词叫做数词,基数词,one,two,three,four,five,six,seven,eight,nine,ten,onetwothreefourfivesixseveneightnineten,eleven twelve thirteenfourteen fifteen sixteen seventeen eighteen nineteen,hundred,twenty-onetwenty-twotwenty-threetwenty-fourtwenty-fi
2、vetwenty-sixtwenty-seventwenty-eighttwenty-nine,十几:teen,几十:ty,几十几：,基数词记忆口诀：,基数词，表数量，一至十二单独记，十三、十四至十九，teen结尾莫忘记，二十、三十至九十，ty结尾整十数，若是遇到几十几，连上个位就可以。,挑战1,请默写1-12的基数词,Lets review,10,20,30,40,50,60,70,80,90,100,ten,thirty,forty,seventy,sixty,One hundred,fifty,ninety,twenty,eighty,请快速说出下列数字：,13,20,30,15,40,
3、70,18,80,90,50,1,2,3,4,5,6,7,1,2,3,4,5,6,7,one-first,two-second,three-third,four-fourth,five-fifth,six-sixth,seven-seventh,eight-eighth,nine-ninth,ten-tenth,序数词,eleven-eleventh,twelve-twelfth,挑战2,请默写1-12的序数词,fiftieth,twenty,thirty,forty,fifty,twentieth,thirtieth,fortieth,sixty,seventy,eighty,ninety,
4、sixtieth,seventieth,eightieth,ninetieth,几十，y变ie,再加th,twenty-one,thirty-two,forty-three,fifty-four,sixty-five,seventy-six,eighty-seven,ninety-eight,twenty-first,thirty-second,forty-third,fifty-fourth,sixty-fifth,seventy-sixth,eighty-seventh,ninety-eighth,若是遇到几十几，只变个位就可以,first 1stsecond 2ndthird 3rdfo
5、urth 4thfifth 5thsixth 6thseventh 7theighth 8thninth 9thtenth 10th,eleventh 11thtwelfth 12ththirteenth 13thfourteenth 14thfifteenth 15thsixteenth 16thseventeenth 17theighteenth 18thnineteenth 19thtwentieth 20th,twenty-first(21st)twenty-second(22nd)twenty-third(23rd)twenty-fourth(24th)twenty-fifth(25
6、th)twenty-sixth(26th)twenty-seventh(27th)twenty-eighth(28th)twenty-ninth(29th)thirtieth(30th)thirty-first(31st),缩写：1st 2nd 3rd 4th,序数词，很容易，前面用the表顺序，基变序，有规律，词尾加上th,一、二、三，特殊记，词尾字母t,d,d。八加h,九减e，f来把ve替，ty须变tie。若是遇到几十几，变化个位就可以。,序数词记忆口诀：,基数词:one,two,three,hundred.,序数词：first,second,third,fourth,fifth,ninth,twelfth,thirteenth,nineteenth,twentieth,twenty-first，thirtiethhundredth.,请把以下数词中的序数词找出来！,forty eighty fifteen twelve five,first third eightieth ninth second fifteenth hundredth eleventh twenty-first ninetieth fourth forty-third sixty-seventh,P5,
