七年级英语上册unit-8-Section-A-1a-2e两课时课件.ppt

* * 12999英语网 12999英语网 It’s on … My birthday is on … When is your birthday, ...? Make your own conversations. Listen and repeat. 2a 24th 23rd 22nd 21st 20th 19th 18th 17th 31st 30th 29th 28th 27th 26th 25th 16th 15th 14th 13th 12th 11th 10th 9th 8th 7th 6th 5th 4th 3rd 2nd 1st Listen and circle the numbers you hear in 2a. 2b 24th 23rd 22nd 21st 20th 19th 18th 17th 31st 30th 29th 28th 27th 26th 25th 16th 15th 14th 13th 12th 11th 10th 9th 8th 7th 6th 5th 4th 3rd 2nd 1st Learn these numbers and find out the rules. 1st first 2nd second 3rd third 4th fourth 5th fifth 6th sixth 7th seventh 8th eighth 9th ninth 10th tenth 11th eleventh 12th twelfth 13th thirteenth 14th fourteenth 15th fifteenth 16th sixteenth 17th seventeenth 18th eighteenth 19th nineteenth 20th twentieth 21st twenty-first 22nd twenty-second 23rd twenty-third 24th twenty-fourth 25th twenty-fifth 26th twenty-sixth 30th thirtieth 31st thirty-first 一.第1,第2,第3： first, second, third 二.第4---第19：-th: fourth, (five) fifth, sixth, seventh, (eight )eighth, (nine) ninth, tenth eleventh, (twelve) twelfth, thirteenth, fourteenth fifteenth, sixteenth seventeenth eighteenth nineteenth 序数词的变化方法 三.第20--第90：y ie +th 四.第21--第99: 基变序, 有规律, 词尾加上th。1 2 3 特殊记, 8 少 t, 9 去 e, f 来把 v e 替。整十变y为ie, 后跟 th 莫迟疑。若想表示几十几，只变个位就可以。 twenty — twentieth Twenty-one twenty-first 序数词的变化方法 十位基数词 个位序数词 one two three four five six seven eight nine ten first second third fourth fifth sixth seventh eighth ninth tenth 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 基数词 序数词 基变序，有规律，词尾加上th。123 ，特殊记，8去t，9去e，f来把ve替。 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth 11