五年级下unit3B序数词巧计法 -.ppt

Where is Yao Ming’s home? It’s on the twentieth floor. * Unit Three My birthday Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. A New Flat first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth 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. 第五、十二序数词是把基数词末尾ve 改为f再加th。 第八、九序数词是把基数词最后一个字母去掉再加th。 整十的序数词是把基数词末尾 ty改为tie再加th。 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 March 12th Unit 3 复习课练习题 一、Read and match。 （读一读，连一连。） twentieth Apr. seventeenth 12th first Sept. November 3rd April 20th third 17th September 1st twelfth Nov. Put the word in right order.(连词成句) 1. is, when, birthday, your, brother’s (?) 2. uncle’s, my, in, is, July, birthday (.) 3. date, is, what, the (?) 4. is, December 12th, birthday, Zhang Peng’s (?) When is your brother’s birthday? My uncle’s birthday is in July. What is the date? Is zhang peng’s birthday December? 三、Read and answer（读短文，回答问题。） Hello! I’m Mike. I have a big family. There are nine people in my family. They are my parents, my grandparents, my brother, my sister, my uncle, my aunt and me. I’m 12 years old. My birthday is in May. My father and my sister’s birthday are in May, too. My mother’s birthday is in August. My brother’s birthday is in September. My uncle’s birthday is in July. My aunt’s birthday is in July, too. Because they are tw