七年级英语新目标上Unit8课件.ppt

将基数词转换成序数词 one two three four eight nine five twelve twenty twenty-one * * * Unit 8 When is your birthday? /`b?:?de?/ 生日 birthday birth day /`b?:?/ /de?/ 出生 日子 Birthday=The day of birth 一月 二月 三月 四月 五月 January February March April May Jan. Feb. Mar. Apr. May. the names of the months 全称 缩写 /`??nju?r?/ /`febru?r?/ /ma: ?/ /`e?pr?l/ /me?/ /mΛnθs/ 六月 七月 八月 九月 十月 十一月 十二月 July August September October November December Jul. Aug. Sep. Oct. Nov. Dec. June Jun. /?u:n/ /?u`la?/ /`?:g?st/ /sep`temb?/ /?k`t?ub?/ /n?u`vemb?/ /d?`semb?/ first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth The first month is January. 基数词变序数词。其规律为： 1,2,3特殊记, 加th从4起, (first,second,third,fourth) 8少t，9去e，千万别忘记, (eighth, ninth) ve变f , y要变ie , (fifth, twelfth, twentieth, ninetieth) 若是几十几，前基后序别忘记. (ninety-first) first second third fourth eighth ninth fifth twelfth twentieth 1st 2nd 3rd 4th 8th 9th 5th 12th 40th twenty – first 21st one two three four five six seven eight nine ten first second third fourth fifth sixth seventh eighth ninth tenth 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth 11th 12th13th14th15th16th17th18th19th20th 基数词 基数词 序数词 序数词 twenty-one twenty-two twenty-three thirty forty fifty sixty seventy eighty ninety hundred twenty-first twenty-second twenty-third thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth hundredth 21st 22nd 23rd 30th 40th 50th 60th 70th 80th 90th 100th 基数词 序数词 基变序，有规律，词尾加上th. 1 2 3 特殊记，词尾字母t，d，d。