五年级下Unit4 基数词和序数词ppt课件.pptx

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1、基数词&序数词,九龙坡区火炬小学 钟 明,火眼金睛：快速说出你看到的数字,Great！,基数词数量,序数词顺序,人数个数时间 ,日期楼层名次 ,There are five people in my family.,I have six pens.,Its nine oclock.,Today is April 24th.,The teachers office is on the third floor.,She is the first in her class.,数词,序数词的缩写：阿拉伯数字+序数词的最后两个字母,基数词变序数词的变化规则,1. 基变序，有规律 词尾加上th,four,

2、th,seven,th,2.一、二、三，全变体,one,first,two,second,three,third,3. 八去t, 九去e,eight,th,nine,th,4. ve要用f替,five,f,th,twelve,f,th,5. 以y结尾变ie,twenty,ie,th,6. 遇到几十几，只变个位就可以,thirty-one,first,forty-seven,th,基数词变序数词的口诀,基变序，有规律,词尾加上th，(fourth,sixth),一、二、三，全变体(first, second, third),八去 t，九去 e (eighth,ninth),ve要用f替 (fif

3、th,twelfth),以y结尾变ie (twenty -twentieth),遇到几十几, 只变个位就可以,(twenty-four-twenty-fourth),一、说出下列数字对应的序数词,thirty-fourth,second,fifth,ninth,twentieth,Exercises:,twenty-third,first,third,eighth,twelfth,二、用所给词的适当形式填空1. I see _ horses in the picture. (ten)2. My birthday is on July _. (two)3. Mothers Day is on the _ Sunday in May. (two)4. It is _ oclock. (three)5. There are _ people in his family. (eight),ten,2nd,second,three,eight,Thank you!,