(
课件网) Unit 1 Dream homes Grammar 牛津译林版 七年级下 Lead-in 12 o’clock No.28 Bus No.30 player We use Cardinal numbers everyday. Lead-in Presentation 基数词定义及拼写 表示数目的词称为基数词(Cardinal numbers)。其形式如下： 1－12, 独立成词。 one two three four five six seven eight nine ten eleven twelve 20－90, 以-ty结尾。 20—twenty 30－thirty 40—forty 50—fifty 80—eighty 60—sixty 70—seventy 90—ninety 基数词定义及拼写 Presentation 13－19, 由3－9 + teen构成。 14–fourteen 16－sixteen 17－seventeen 19—nineteen 特殊拼写: 13— thirteen 15—fifteen 18—eighteen 21－99， 两位数，十位与个位之间有 “－”。 twenty-one 55 fifty-five 99 ninety-nine 基数词定义及拼写 Presentation 101—999，三位数，百位与十位/个位之间加and。 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three 英语基数词顺口溜 英语数词不难记，找出规则就容易。 零至十二形各异，一个一个单独记。 后面加teen变十几，thirteen, fifteen看仔细。 eighteen只有一个t，两个音节念清晰。 表示“几十”要加-ty, twenty, thirty 是特例。 表示数字“几十几”，连字符号别忘记。 631 789, 500, 5, thousand hundred million billion and 1，000以上数目,从右向左每三位用“，”分开,分别读为thousand , million, billion Presentation 基数词定义及拼写 Practice 4,056= 23,813= 567,110= 6,425,200= four thousand and fifty-six twenty-three thousand, eight hundred and thirteen five hundred and sixty-seven thousand, one hundred and ten six million, four hundred and twenty-five thousand, two hundred How do we say them Practice How do we read them Simon is collecting some information about different countries.Help him read the numbers correctly. 1.People from about 180 countries and areas live in New York. 2.The CN Tower is 1,815 feet tall. 3.Red Square in Moscow is about 91,000 square miles. one hundred and eighty one thousand eight hundred and fifteen ninty-one thousand Practice How do we read them Simon is collecting some information about different countries.Help him read the numbers correctly. 4.France has an area of over 260,000 square miles. 5.There are about 8,000,000 people living in London. 6.Tokyo,the capital of Japan,has over 13,000,000 people. two hundred and sixty thousand eight million thirteen million Practice How do we write them 1. one hundred and twenty-five 2. two thousand three hundred and eleven 3. ten thousand and eleven 4.one hundred thousand one hundred and two 5. Two million three hundred and two 6. nine hundred million eight thousand seven hundred and eight 125 2,311 10,011 100,102 2,000,302 9,008,708 基数词的用法 表示具体数目,hundred, thousand, million不用复数。 特殊基数词的用法 Extension Our country has a population of 1,300 million people. There are three thousand students in our school. 特殊基数词的用法 After the war, thousands of people became homeless. Several / Many thousands of trees must be planted every year. 表示不确定数目,用复数。即hundreds of(数百), thousands of(数千), millions of(数百万) ... ...
