Unit 8 Section A Grammar Focus-3c课件2023-2024学年人教版七年级英语上册

Unit 8 When is your birthday? Section A Grammar Focus-3c Learning objects(学习目标) By the end of the class,you will be able to… Learn key words and expressions:first,second… Learn the grammar about ordinal numbers(序数 词)and the possessive case of nouns(名词所有格). Talk about birthday dates correctly. Look and fill in the blanks. When is your birthday? My birthday is on January 3rd When is your birthday? It's on April 11th His birthday is on Februar th . Her birthday is on March 8th. When is Mary's birthday? When is Mike's birthday? When is your mother's birthday? father's birthday? When is your His birthday is on November 21st Her birthday is on October 2rd When is your birthday? My birthday is on May 2nd. When is his birthday? His birthday is on January 17th When is her birthday? It's in August. When is Alice's birthday? Her birthday is on September 5th. When is your father's birthday? His birthday is on April 21st. Grammar Focus . first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth twenty-first twenty-second twenty-third twenty-fourth twenty-fifth twenty-sixth twenty-seventh twenty-eighth twenty-ninth thirtieth thirty-first 表示事物的顺序的数词叫序数词。 它的作用相当于名词或形容词，可 作主语、宾语、定语或表语。 基数词要变为序数词是有规律可 循的，其方法及具体示例如下： 一 、序数词 2.构成： 1. 定义： 规律 示例 1~19,一般在基数词后加-th six—sixth seventeen—seventeenth 20~90之间的整十的序数词是把对应 的基数词末尾的y变为ie,再加-th twenty—twentieth thirty—thirtieth 20以后的非整十的两位或两位以上 的基数词变为序数词时，只将个位 数变为序数词 twenty-two—twenty-second one—first two—second 特殊变化的基数词 1、2、3、5、8、9、12等需单独 记忆 three—third five—fifth eight—eighth nine—ninth twelve—twelfth 1,2,3,特殊记； 从第4,加 th; 5和12,也好记， 若要表示整十数， th接上莫迟疑， 只变个位就可以。 基变序，有规律。 结尾时，t,d,d; 8加h, 9去e; f来把 ve 替； 词尾y, 变 ie; 如要表示几十几， 巧记歌诀 序数词都有缩写形式：在阿拉伯数字后 加该序数词的最后两个字母。示例如下： first →