7B+Unit1 grammar 译林牛津英语七年级下册 Unit1语法序数词与基数词.ppt

Unit 1 Dream homes ;What numbers can you see?;学生早读时已预习过本单元单 词，可利用几分钟时间带学生快速回顾温习。对单词的熟练度越高，阅读的速率也越高。;Words review;To learn the cardinal numbers and use them to talk about the numbers of people or things To learn the ordinal numbers and use them to talk about dates, floors, positions, etc.;语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。;Look at the following sentences.;Sentences from this unit:;;1. The new students in Class __, Grade __ … 2. Li Hua is ___ years old. 3. There are ___ classrooms in it. My classroom is on the ________ floor. 4. I only have _______ yuan. 5. There are _______ restaurants in town. 6. The biggest one in _____ Street! 7. I live in a town ___ miles from London. 8. Our flat is on the _______ floor. 9. It has ______ rooms.;1. September is the _____ month of the year. A. nineth B. ninth C. nine D. the twelfth 2. _____?Chinese?are?looking?for?ways?to? learn?English?well?before?Beijing?2008? Olympic Games.  A.?Thousand??? B.?Thousands????? C.?Thousand?of????? D.?Thousands?of ;以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据 之前练习的考察情 况进一步选择讲解 该语法项的重难点。;表示数目和顺序的词叫做数词。数词又分基数词和序数词，基数词表示数量，序数词表示顺序。 ;① 21～99的两位数，十位与个位之间用连 字符“-”。例： ◇ 21 twenty-one ◇ 32 thirty-two ◇ 98 ninety-eight ◇ 99 ninety-nine ② 101～999的三位数，百位数和后面的数 之间用连词and，百后用单数形式。例: ◇ 101 one hundred and one ◇ 225 two hundred and twenty-five ◇ 999 nine hundred and ninety-nine ;111 , 1 1 1 , 1 1 1 , 1 1 1 ;③ 1000以上的数，从后面向前数，每三 位中间点 “,”，第一个 “,” 前为 thousand，第二个 “,” 前为 million， 例： ◇ 2,567 ◇ 3,018 ◇ 16,250,064;hundred, thousand, million的用法： 前面有数词，则不用其复数??如 two hundred, five thousand等。 表示上百、上千、上百万时，用 hundreds of, thousands of, millions of来表示。;① 一般来说，是由相应的基数词加词尾th 构成。例： ◇ four ＋ th → fourth ◇ six ＋ th → sixth ◇ seven ＋ th → seventh ◇ ten ＋ th → tenth ② 下面这些基数词在变为序数词时，有特 殊的变化。例： ◇ one → first ◇ two → second ◇ three → thi