unit 4 B lets learn.ppt

1、Unit 4 When is Easter ?,Lets learn Look and write,When is _? Its on _.,New years Day,January 1st,April Fools Day,April 1st,Childrens Day,June 1st,Chinas National Day,October 1st,May Day,May 1st,表示数目顺序的词叫序数词。 例如:第一，第二，,序 数 词,first,second,third,fourth,第二,第三,第四,第一,fifth (ve变f),第五,sixth,seventh,eighth（-

2、t）,第六,第七,第八,ninth (-e),第九,tenth,第十,When is Tree Planting Day ?,When is Christmas ?,When is your birthday?,Its on August 21st.,twenty-first,21st,twenty-one,When is grandpas birthday?,Its on October 12th.,12th,twelfth,twelve,When is grandmas birthday?,Its on April 20th.,twentieth,20th,twenty,When is D

3、ads birthday?,Its on November 30th.,thirtieth,30th,thirty,When is Mums birthday?,Its on February 23rd.,twenty-third,23rd,twenty-three,整十的数,twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety,序 数 词,整十数的序数词的构成方法: 是将整十数的词尾 -y , 变成 i和e 再加 th; 例如：twenty -twentieth,序 数 词,几十几（例如32 ，68等）序数词变化方法： 只是把个位数变成相

4、应的序数词, 十位数不变 例如： 21: 53: 66:,twenty-one,fifty-three,sixty-six,基变序，有规律： 一般词尾th; 1、2、3特殊记，词尾各是t, d, d; 8加h、9去e; ve要用f替; 遇y变成i和e，th在后别忘记; 若要表示几十几，只变各位就可以。,eleven,twelve,thirteen,fourteen,eleventh,twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth,sixteen,seventeen,eight

5、een,nineteen,fifteen,在11-19的序数词里面，只有第十二的变化最为特殊，twelfth,整十数变序数词,twentieth,thirtieth,fortieth,fiftieth,sixtieth,seventieth,eightieth,ninetieth,Wu yifans birthday is on August 21st. Grandpas birthday is on October 12th. Grandmas birthday is on April 20th. Dads birthday is on November 30th. Mums birthday is on February 23rd.,When is your birthday?,My birthday is on_,When is your/your fathers/your mother