文档介绍：Revision about Numerals (数词的复习)学习目标 1、基数词的构成和用法。 2、序数词构成规律及用法。 LET ’ S TRY: Read the following numbers as quickly as you can: 11 40 30 18 Go ! 8 15 32 12 6 13 7 预习检测: 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? ---- H e was born on ________. A. second of October B. the October three C. October the second D. three of October 5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。 6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– four teen 16--six teen 17--seven teen 19 — nine teen 特殊拼写: 13 – th ir teen 15--fi f teen 18 — eigh t een 3)20-90, 以-ty 结尾。 20— tw en ty 30---th ir ty 40 — for ty 50 — fif ty 60---six ty 70---seven ty 80---eigh ty 90— nine ty 4)21-99,两位数,十位与个位之间有“-”。 21 twenty — one 55 fifty — five 99 y — 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 y - three 729 , 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 8基数词的构成? 6500431729 ? six billion,five hundred million,four hundred and thirty-one thousand seven hundred and twenty-nine 1. hundred thousand (表示具体数字) million billion 2. hundred s thousand s (表示概数) million s billion s five + of