Unit 2 Lesson 8 First, Second, Third 课件（15张PPT）

课件15张PPT。Lesson 8
First, Second, Third冀教版 四年级下册十二月一月十一月八月十月九月七月五月六月四月三月二月AugustJanuaryAprilOctoberDecemberMarchMayJulyJuneNovemberFebruarySeptemberThis is a race.（比赛）The girl is the second.Li Ming is the first.The boy is the third.secondthird基数词序数词firstonetwothreefourfivesixseveneightninetenthfthththhththonetwothreefourfivesixseveneightnineten除了第一第二第三外,其余的序数词都是从基数词加 th 变化来的sixteennineteenseventeeneighteenthirteenfourteenfifteeneleventhtwelththvefthththththth整十数的序数词是把整十数基数词的词尾y改为ie再加th整十数的序数词： twent2. thirty3. forty4. fiftythirtiethfortiethfiftietheightyninetysixtyseventyhundredyieth两位数序数词的表示方法：几十几的序数词，十位数不变，个位数变成序数词，中间用“-”连起来1. twenty-onetwenty-first2. twenty-three twenty-third3. twenty-nine twenty-ninth 1,2,3特殊记
“th”从4以上记
8减“t”,9减“e” (eight-eighth, nine-ninth)
“ve”要用“f”替 (five-fifth,twelve-twelfth)
整十去“y”变“ie”加th (twenty-twentieth)
要问几十几或几百几
只变个位记心里！
( twenty-two --twenty-second)序数词记忆规律：SundaySaturdayFridayThursdayWednesdayTuesdayMonday星期日星期六星期三星期四星期五星期二星期一21211What day is it？
It is Tuesday.今天星期几？What is the date?
It is March eighteenth.
(Mar. 18th)4310961What day is it？It’s Tuesday, March eighteenth.When is your birthday?
It is …….谢 谢