人教版 ( 三年级起点 ) 五年级下册Part B Let's learn Look and write Unit 4 When is Easter?Let's learn视频Sum-upWarm-up/RevisionPresentationTestHomework● Let's learn● Look and writeAsk and answerWarm-up/RevisionWhen is … birthday?It’s …Let’s answer When is Sarah’s birthday?It is___ Let’s answer When is Zhang Peng’s birthday?It is___ Presentation基数词序数词简写onefirst1sttwosecond2ndthreethird3rdfourfourth4thfivefifth5thLet’s readIt’s on April________.Look,ask and answerWhen is April Fool’s Day?1st It’s on May_____________.Look,ask and answerWhen is the singing contest ?twelfth/12th twelfth ( 序数词 ) 第十二 ( 的 )简写： 12th It’s on June_____________.Look,ask and answerWhen is your mother’s birthday?twentieth/20thtwentieth /ˈtwentiəθ/( 序数词 ) 第二十( 的 )简写： 20thIt’s on December_____________.Look,ask and answerWhen is the maths test?thirtieth/30th thirtieth /ˈθ ɜːtiəθ/( 序数 词 ) 第三十 ( 的 )简写： 30thIt’s on November________________.Look,ask and answerWhen is your grandpa’s birthday?twenty-third/23rd twenty-third /ˌtwentiˈθɜːd/( 序数词 ) 第二十三 ( 的 )简写： 23rdIt’s on April_____________.Look,ask and answerWhen is the English test?twenty-first/21st twenty-first /ˌtwentiˈfɜːst/( 序数词 ) 第二十一 ( 的 )简写 : 21stLet's learn点击“ Let's learn” ，跟我一起读吧！视 频Let's learnAugust12thGrandpa'sbirthdayApril 20th Grandma’s birthdayNovember30thDad'sbirthdayFebruary23rdMum'sbirthdayAugust21stMybirthdayWhen is…It’s on …Mon .Tues.Wed.Thur.Fri.Sat.Sun.123455th66th77th88th99th1010th1111th1213141516171819202122232425262728293031Look and write1st31st特殊变化的one—first(1st) two—second(2nd) three—third(3rd)five—fifth(5th)eight—eighth(8th)nine—ninth(9th)twelve—twelfth基数词变序数词规律（ 1--100)规律变化的（一）十几的数，都是在基数词后加 th 。如： fifteen—fifte...
