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基数词和序数词的知识点口诀：基变序，有规律；一二三特殊记，ve要用f替；八加h,九去e；十几要加th;y结尾变ie，后面加上th;几十几,前面不变，后用序。基数词序数词缩写基数词序数词缩写1onefirst1st23twenty-threetwenty-third23rd2twosecond2nd24twenty-fourtwenty-fourth24th3threethird3rd25twenty-fivetwenty-fifth25th4fourfourth4th26twenty-sixtwenty-sixth26th5fivefifth5th27twenty-seventwenty-seventh27th6sixsixth6th28twenty-eighttwenty-eighth28th7sevenseventh7th29twenty-ninetwenty-ninth29th8eighteighth8th30thirtythirtieth30th9nineninth9th40fortyfortieth40th10tententh10th50fiftyfiftieth50th11eleveneleventh11th60sixtysixtieth60th12twelvetwelfth12th70seventyseventieth70th13thirteenthirteenth13th80eightyeightieth80th14fourteenfourteenth14th90ninetyninetieth90th15fifteenfifteenth15th44forty-fourforty-fourth44th16sixteensixteenth16th55fifty-fivefifty-fifth55th17seventeenseventeenth17th66sixty-sixsixty-sixth66th18eighteeneighteenth18th77seventy-sevenseventy-seventh77th19nineteennineteenth19th88eighty-eighteighty-eighth88th20twentytwentieth20th99ninety-nineninety-ninth99th21twenty-onetwenty-first21st22twenty-twotwenty-second22nd语法：序数词通常与the连用最常见的形式the+序数词+of+月份598——fivehundredandninety-eight★在英语里，数字（阿拉伯数字）通常从个位数起往左，每三个数用一个逗号隔开，而汉语习惯每四个数用逗号隔开（注意区别）从左向右：第一个逗号——用thousand千第二个逗号——用million千万第三个逗号——用billion亿第四个逗号——用trillion万亿五，根据句子意思填空。1.Children’sDay（儿童节）isonthe____ofJune（六月）.2.Thereare____months（月）inayear(年).3.Teacher’sDay(教师节)isonthe____ofSeptember（九月）.4.Threeplus(加)sixis______.周一Monday['mʌndi,'mʌndei](Mon.)周二Tuesday['tju:zdi](Tue.)周三Wednesday['wenzdei,'wenzdi](Wed.)周四Thursday['θə:zdi](Thu.)周五Friday['fraidi](Fri.)周六Saturday['sætədi](Sat.)周日Sunday['sʌndi](Sun.)Season季节春spring夏summer秋autumn冬winterMonth月份一月January（(Jan.)二月February(Feb.)三月Marcy(Mar.)四月April(Apr.)五月May六月June(Jun.)七月July(Jul.)八月August(Aug.)九月September(Sept.)十月October(Oct.)十一月November(Nov.)十二月December(Dec.)节日英语表达大全阳历节日：1月1日元旦（NewYear'sDay)2月14日情人节(Valentine'sDay)3月5日青年志愿者服务日3月8日国际妇女节(InternationalWomen'Day)3月12日中国植树节(ChinaArborDay)4月1日愚人节(AprilFools'Day)4月5日清明节（Tomb-sweepingDay)5月1日国际劳动节(InternationalLaborDay/MayDay)5月4日中国青年节（ChineseYouthDay)6月1日国际儿童节(InternationalChildren'sDay)6月5日世界环境日(InternationalEnvironmentDay)7月1日中国GCD诞生日(AnniversaryoftheFoundingoftheChineseCommunistParty)8月1日中国人民解放军建军节(ArmyDay)9月10日中国教师节(Teacher'sDay)10月1日中华人民共和国国庆节(NationalDay)10月31日万圣节(Halloween)12月25日圣诞节(ChristmasDay)5月第二个星期日母亲节(Mother'sDay)6月第三个星期日父亲节(Father'sDay)11月最后一个星期四美国感恩节(ThanksgivingDay)农历节日农历正月初一春节(theSpringFestival)农历正月十五元宵节(LanternFestival)农历五月初五端午节(theDragon-BoatFestival)农历七月初七乞巧节(中国情人节）(Double-SeventhDay)农历八月十五中秋节(theMid-AutumnFestival)农历九月初九重阳节(theDoubleNinthFestival)农历腊月初八腊八节(thelabaRicePorridgeFestival)