基数词 one two three four five six seven eight nine ten
序数词 first second third fourth fifth sixth seventh eighth ninth tenth
基数词 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty
序数词 eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth
基数词 twenty-one twenty-two twenty-three twenty-four … thirty thirty-one …
序数词 twenty-first twenty-second twenty-third twenty-fourth … thirtieth thirty-first …
基数词变序数词的特点 基数词 序数词 序数词缩写 one first 1st 基变序，有规律，结尾加上th two second 2nd three third 3rd 一二三，特殊例，结尾字母
st ,nd ,rd
four six five twelve eight nine fourth sixth fifth twelfth eighth ninth 4th 6th 5th 12th 8th 9th
first month of a year. ?January is the_____
?March is the ______month of a year. third
fourth ?April is the ______month of a year.
?June is the _______month of a year. sixth
seventh ?July is the ________month of a year.
January ?___________ is the 1st month of the year.
?___________ is the 2nd month of the year. February
May ?___________is the 5th month of the year. eighth month of the year. ?August is the ______ tenth ?October is the_________ month of the year.
基数词 one two three four five six seven eight nine ten eleven twelve
1st 2nd 3rd
基数词 thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty-one twenty-two twenty-three thirty
序数词 thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth twenty-first twenty-second twenty-third thirtieth
缩写 13th 14th 15th 16th 17th 18th 19th 20th
21st 22nd 23rd
first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth
4th 5th 6th 7th 8th 9th 10th 11th 12th
基变序，有规律，词尾加上th. 1 2 3 特殊记，。 8 去 t， 9 去 e， v e 要变f, 以y结尾变ie，然后再加 th . 若想表示几十几， 只变个位就可以。
写作：November 2nd 读作：November the second
----What’s the date?
Today is my birthday!
Happy birthda y!
A:When is your birthday? B:My birthday is October 16th.
A: When is his birthday? B: His birthday is May 4th.
Can you say the dates(说说日期): 1.2月１4日 February
March 8th April 21st January 29th August 12th September 10th
December 25th June 15th
rd st nd st th th th 17th 14th 3 22nd 12th 21 1 2 29 6 30 31 19 9
April ______is the fourth month of the year. ________is the fifth mon