课件42张PPT。Numerals数词Numerals3warming up 1. _____ tress were planted on the mountain last year. A. Thousands of B. Thousand of C. Five thousand of D. Five thousands. 2．_____ of the students are girls in our class． A．Two three?B．Two threes C．Two thirds?D．Second three 3.--When was he born? --He was born on _____. A. second of October B. the October three C. October the second D. three of October4 表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。表示数目多少的数词叫基数词；表示顺序的数词叫序数词。什么叫数词?5基数词的构成1）1－12, 独立成词。 one two three four five six seven eight nine ten eleven twelve 2）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 3）20－90, 以-ty结尾。 20—twenty 30--thirty 40—forty 50—fifty 60--sixty 70--seventy 80--eighty 90—ninety 4）21－99， 两位数，十位与个位之间有 “－”。 21 twenty—one 55 fifty—five 99 ninety—nine 5）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 629,43150076,,thousandhundredmillionbillionand6) 1，000以上数目,从右向左每三位用“，” 分开,分别读为thousand , million, billion 基数词的构成基数词的构成6500431729 six billion,five hundred million,four hundred and thirty-one thousand seven hundred and twenty-ninefour thousand three hundred and twenty-oneseven million,six hundred and fifty four thousand three hundred and twenty-one7,654,3211,987,654,32143214,321one billion, nine hundred and eighty-seven million,six hundred and fifty-four thousand three hundred and twenty-one1. hundred thousand (表示具体数字) million billion 2. hundreds thousands (表示概数) millions billions三.基数词的用法数词 (several)++ ofthe/some / many/these/those hundreds of基数词的用法1、表示具体数目,hundred, thousand, million不用复数 表示不确定数目,用复数。即hundreds of(数百), thousands of(数千), millions of(数百万)+ 名词复数。 1) Our country has a population of 1,300 million people. 2) There are several thousand students in our school. 3) After the war, thousands of people became homeless. 1. — If a = 3, b=4, what’s the answer to the problem, a+2ab+1=? — the answer is___. A. twenty eight B. twenty-eighth C. twenty-eight 2. In our school about five __ students are able to surf the Internet . A. hunderd of B. hunderds of C. hundred3. __ sheep were killed in the accident. A. Thousand of B. Thousand C. Thousands of 4. There are over nine __ workers in the factory, but __ of young people hope to work in it. A. hundred 0f; hundreds B. hundred; hundreds C. hundreds; hundred5. people in the world are sending information by e-mail every day. A.Several million B.Many millions C.Several millions D.Many million A序数词的构成1) 1－3, first, second, third 。 2) 4－19, 相应基数词+th, fourth,fifth,sixth,seventh,eighth,ninth,tenth,eleventh,twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth. 3) 20－90, y变成ie +th, twentieth,thirtiet ... ...
~~ 您好，已阅读到文档的结尾了 ~~
