八年级英语上册 Unit 2 Numbers grammar课件 .ppt
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1、Unit 2 Numbers,Grammar,Lead-in: answer questions.,1 How old are you?Im 13 years old.2 Whats your telephone number?My telephone number is 27227854.3 How many students in your class? How many students in your grade?There are 52 students in my class and about 310 students in our grade.4 In which year w
2、ere you born?In 1999/ 2000/2001.以上的数字都是基数词(cardinal numbers).,A. Do you know! Cardinal numbers,12345678,17181920,111213141516,910,3040528598,onetwothreefourfivesixseveneight,nineten,eleventwelevethirteenfourteenfifteensixteen,seventeeneighteennineteentwentythirtyfortyfifty-twoeighty-fiveninety-eight
3、,基数词的构成,1)112, 独立成词。 one two three four five six seven eight nine ten eleven twelve2)13-19, 由39 + teen构成。 14fourteen 16-sixteen 17-seventeen 19nineteen 特殊拼写: 13 thirteen 15-fifteen 18eighteen 3)2090, 以-ty结尾。 20twenty 30-thirty 40forty 50fifty 80-eighty 60-sixty 70-seventy 90ninety 4)2199, 两位数,十位与个位之
4、间有 “”。 21 twentyone 55 fiftyfive 99 ninetynine,Lets play a game: 报数,Say numbers one by one according to the seat order.按照座位顺序一个接一个报数。报错数的同学站着,并要在小组得分上扣一分。,100,375,200,one hundred,two hundred,three hundred and seventy-five,642,958,236,six hundred and forty-two,nine hundred and fifty-eight,two hundred
5、 and thirty-six,5)101999,三位数,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,29,431,500,7,6,thousand,hundred,million,billion,and,6) 1,000以上数目,从右向左每三位用“,” 分开,分别读为thousand , million, billion,基数词的构成,Read the following numbers.,2,534,25,342,253,423,2,
6、534,233,two thousand five hundred and thirty-four,twenty-five thousand three hundred and forty-two,two hundred and fifty-three thousand four hundred and twenty-three,two million five hundred and thirty-four thousand two hundred and thirty-three,534,five hundred and thirty-four,2,250,342,330,two bill
7、ion two hundred and fifty million three hundred and forty-two thousand three hundred and thirty,A. lets read it.,1000,15,362,4,189,one thousand,four thousand one hundred and eighty-nine,fifteen thousand three hundred and sixty-two,100,000,285,643,one hundred thousand,two hundred and fifty-eight thou
8、sand six hundred and forty-three,A. Cardinal and ordinal numbers,1,000,000,3,367,982,one million,three million three hundred and sixty-seven thousand nine hundred and eighty-two,Work out the rule,In the cardinal numbers, we do not add -s to hundred, _ and _.With large numbers, we put _between hundre
9、d and ten.,thousand,million,and,注意:表示具体、准确的数目时,hundred, thousand, million等数词后不能加-s, 如five hundred, six thousand, seven million等。当hundred, thousand等数词与of连用,表示不具体、不准确的数目时,词尾须加-s。如: thousands of students, millions of trees.,1、 “几十”的复数形式可以表示: 几十多岁 - in + ones + 数词复数 年 代 - in + the +数词复数 1) He died in hi
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