译林版七年级下册英语课件-Unit 1 Dream Homes Grammar 28页

A Cardinal numbers B Ordinal numbers 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。 单词回顾 Words review zero hundred thousand million foot square metre area over num. 零 num. 百 num. 千 num. 百万 n. 英尺 adj. 平方的 n. <英>米，公尺 <美>meter n. 面积 prep. 超过 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. 1. The new students in Class 1, Grade 7 … (七年级上册 U1) 2. Li Hua is 22 years old. (七年级上册 U2) 3. There are 18 classrooms in it. My classroom is on the ground floor. (七年 级上册 U3) 4. I only have fifteen yuan. (七年级上册 U7) Sentences from this unit: 1. There are twenty restaurants in town. (P6) 2. The biggest one in Fifth Street! (P6) 3. I live in a town 15 miles from London. (P8) 4. Our flat is on the seventh floor. (P8) 5. It has eight rooms. (P8) to test your sense of observation to test your ability of short- term memory to test your ability to highlight the language points Guess 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. 还记得这些数词么？ 1 7 22 18 ground fifteen twenty Fifth 15 seventh eight 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. 表示班级、年级、学校人数等； (Class 2, Grade 7) 2. 表示城市和国家的人口数量等； 3. 表示电话号码、车牌号、门牌 号、价格、年份等。 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 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 two thousand five hundred and sixty-seven ◇ 3,018 three thousand and eighteen ◇ 16,250,064 sixteen million two hundred and fifty thousand sixty-four 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 → third ◇ five → fifth ◇ eight → eighth ◇ nine → ninth ◇ twelve → twelfth ③ 十位整数序数词的构成方法是将基数词 的词尾y变成i，然后再加eth。例： ◇ twenty → twentieth ◇ thirty → thirtieth ◇ forty → fortieth ◇ ninety → ninetieth ④ 两位或两位以上的基数词变成序数词 时，仅将个位数变成序数词。例： ◇ twenty-one → twenty-first ◇ thirty-five → thirty-fifth ◇ a hundred and fifty-three → a hundred and fifty-third Cardinal numbers Ordinal numbers 1 one 1st = first 2 two 2nd = second 3 three 3rd = third 4 four 4th = fourth 5 five 5th = fifth 6 six 6th = sixth 7 seven 7th = seventh 8 eight 8th = eighth 9 nine 9th = ninth 10 ten 10th = tenth 11 eleven 11th = eleventh 12 twelve 12th = twelfth Cardinal numbers Ordinal numbers 13 thirteen 13th = thirteenth 14 fourteen 14th = fourteenth 15 fifteen 15th = fifteenth 16 sixteen 16th = sixteenth 17 seventeen 17th = seventeenth 18 eighteen 18th = eighteenth 19 nineteen 19th = nineteenth 20 twenty 20th = twentieth 21 twenty-one 21st = twenty-first 22 twenty-two 22nd = twenty-second 23 twenty-three 23rd = twenty-third 30 thirty 30th = thirtieth We use the cardinal numbers to talk about the numbers of people or things. e.g. The CN Tower is 1,815 feet tall. There are about 8,000,000 people living in London. We use the ordinal numbers to talk about dates, floors, positions, etc. e.g. Women’s Day is on the eighth of March. Our flat is on the seventh floor. He is always the first to come to school in our class. I. Choose the best answer. 1. I'm 13 years old and my sister is 15 years old. So my sister is _____ years older than me. (2012山东济南) A. one B. two C. three D. four 2. ______ visitors come to Xingyi during May Day holidays every year. (2012黔西南) A. Thousands of　 B. Two thousands　　 C. Thousand of　 D. Thousand 3. — How was your weekend? — Great! It was my grandfather's ______ birthday. We enjoyed ourselves. (2012广东) A. seventy B. seventieth C. the seventieth　 D. seventeenth 4. He wrote his ______ novel when he was ______. (2011湖北恩施) A. five; fifties　 B. fifth; fifty　 C. fifth; fiftieth 5. Please turn to page ______ and look at the ______ picture in this unit. (2012山东聊城) A. twentieth; one B. twenty; one C. twentieth; first D. twenty; first 6. If a = 3 and b = 4, what’s the answer to the problem: a + b + 1 = ? The answer is ______. (2012四川宜宾) A. twelve　 B. nine　 C. eight　 D. seven 7.—Where is Class ___________? —It’s on the _________ floor. （2013天津） A.Six; third B.Sixth; third C.Six; three D.Sixth; three 8. It’s said that ______ of the water around the world ______ polluted. (2013黄 石) A. two third; has B. two thirds; have C. two third; are D. two thirds; is 1. His house is on the ______ (九) floor. 2. May is the ______ (five) month of a year. It’s the best time for hiking (徒 步旅行). 3. There are _______ (四十) students in his class. He always comes the ________ (第四十). 4. Is Brian her ____ (第一个) or ______ (第二个) child? II. 根据提示完成下列句子。 ninth fifth fortieth forty first second Preview Integrated skills on Pages 13 and 14. Learn to talk about homes. 1. Read and remember the numbers. 2. Do the exercises B1 and B2 on Page 12.