Unit 1 When is your birthday? 一、序数词Ⅰ. 写出相应的序数词及其缩写形式1. one ________ _______2. two ________ _______3. three ________ _______ 4. four ________ _______ 答案： 1. first 1st 2. second 2nd 3. third 3rd 4. fourth 4th5. five ________ _______6. eight ________ _______7. nine ________ _______8. twelve ________ _______ 9. twenty ________ _______10. thirty-one ________ _______答案： 5. fifth 5th 6. eighth 8th 7. ninth 9th 8. twelfth 12th 9. twentieth 20th 10. thirty-first 31stⅡ. 用所给词的适当形式填空1. This is my _____(two) son. 2. Today is his _____(thirteen) birthday. 3. The _____(five) month of the year is May. 4. —Is your birthday on January 1st? —No, it’s on the _____(six). 答案： 1. second 2. thirteenth 3. fifth 4. sixth【探究总结】序数词用来表示顺序，通常在基数词后面加上后缀 -th 构成。(1) 序数词 first, second, third 与其相应的基数词 one, two, three相差很大，需单独记忆。(2) 从第四到第十九、第几十均以① _____ 结尾。(3)“” 表示 第几十几 时， 只需将个位变为 ② ______ 。答案：① th ② 序数词记忆口诀：基变序，有规律。第一、二、三单独记。-th 从四起，八去 t, 九去 e, ve 结尾 f 替，整十 y变 ie, 再加 th 莫迟疑。若是遇到几十几，只变个位就可以。(4) 序数词的缩略形式由阿拉伯数字加上序数词的③ _____ 构成。答案：最后两个字母【特别提醒】序数词在使用时，一般在其前面加定冠词 the ；当有物主代词修饰时，不加 the 。二、名词所有格Ⅰ. 用所给词的适当形式填空1. When is _____(New Year) Day? 2. My _____(desk) color is white. 3. My _____(parent) friends like to play baseball. 4. Happy ______ (teacher) Day! 5. The three _____(child) father is Mr. Smith. 答案： 1. New Year’s 2. desk’s 3. parents’4. Teachers’ 5. children’sⅡ. 完成句子1. 房间是 Kate 的。 The room _____ _____ . 2. Jim 和 John 的电话是新的。 _____and _____ _____ are new. 3. Ann 和 Tom 的爸...
