序数词PPT课件.ppt

.,1,序数词的变化及用法,鸡东三中赵媛媛,.,2,基数词的复习,1、三只钢笔2、六个苹果3、12个篮球4、32个西红柿,基数词：描述事物数量的多少的数词。,threepens,sixapples,twelvebasketballs,thirty-twotomatoes,.,3,Numbers基数词,OneTwoThreeFourFiveSixSevenEightNineTen,ElevenTwelveThirteenFourteenFifteenSixteenSeventeenEighteenNineteenTwenty,Twenty-oneTwenty-twoThirtyFortyFiftySixtySeventyEightyNinetyAhundred,.,4,认识序数词,数词,序,顺序,表示事物的顺序的数词。（由基数词变为序数词）,.,5,Learnthesenumbersandfindouttherules:一起找规律,1stfirst2ndsecond3rdthird4thfourth5th6th7th8theighth9thninth10th,fifth,sixth,seventh,tenth,11theleventh12thtwelfth13th14th15th16th17th18th19th20thtwentieth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth,21sttwenty-first22ndtwenty-second23rdtwenty-third24th25th26th27th28th29th30ththirtieth31stthirty-first,twenty-fourth,twenty-fifth,twenty-sixth,twenty-seventh,twenty-eighth,twenty-ninth,.,6,基变序（巧学妙记）,基变序有规律，结尾加上th,1、一、二、三特殊记，结尾就是t/d/d,第一first（one)第二second(two)第三third(three),.,7,2、八去“t”,九去“e”,“ve”要用“f”替后加”th”别忘记,第十二twelfth（twelve),第八eighth(eight),第九ninth（nine),第五fifth(five),.,8,3、整十把“y”变”ie”,后加th莫迟疑,twenty-twentieththirty-thirtiethforty-fortiethfifty-fiftiethsixty-sixtieth,.,9,4、若要遇到几十几，只变个位就可以,twenty-one-twenty-firstfifty-five-fifty-fiftheighty-two-eighty-secondninety-three-ninety-third,5、序数词表顺序，前有定冠词莫忘记,.,10,1.ThemonthofayearisApril(四月）A.thirdB.fourthC.fifth2.Thegirlis.Todayisherbirthday.A.twelfth;twelfthB.twelve;twelfthC.twelfth;twelve3.Ihaveapples,isgreen.A.six;fourthB.sixth;fourC.six;thefourth,.,11,基变序有规律，结尾加上th,1、一、二、三特殊记，结尾就是t/d/d,2、八去“t”,九去“e”,“ve”要用“f”替后