Unit Three
My birthday
Jan.
Feb.
Mar.
Apr.
May
June
July
Aug.
Sept.
Oct.
Nov.
Dec.
A New Flat
Where is Yao Ming’s home?
It’s on the twentieth floor.
基数词 序数词 序数词缩写
one first 1st
two second 2nd
three third 3rd

four fourth 4th
six sixth 6th

five fifth 5th
twelve twelfth 12th

eight eighth 8th
nine ninth 9th

twenty twentieth 20th
thirty thirtieth 30th
基数词变序数词的特点
第一、二、三变单词。
一般是在基数词的末尾加th.
有的序数词是把基数词末尾ve 改为f再加th。
有的序数词是把基数词一个字母去掉再加th。
有的序数词是把基数词末尾 ty改为tie再加th。
基数词变序数词顺口溜
二 三变单词,
th从四上起.
怎么加？真好记!
八减t，九减e
f要把ve替，ty变为tie。
Christmas Day
December 25th
Children’s
Day
June 1st
Tree-planting Day
March 12th
Wang Guoqing
When is Wang Guoqing’s birthday?
What’s the date?
Zhang Liuyi
Li Jianjun
Chen Yuandan
Song Zhishu
Goodbye