深圳2012新版上教八年级上 Unit 2 语法教案--基数词和序数词.docVIP

Unit 2 Numbers --语法教案 语法一、基数词 (1)基数词的构成表示数目多少的词叫基数词。 1-12独立成词：one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve。 13-19(+teen): thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen。两个音节都要重读。 20-90(整十位数+ty): twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety。第一个音节重读。 21-99间的两位数，先说“十位”，再说“个位”，中间要加连字符“-” 101-999之间的三位数，先说“百位”，再加and,再加末尾两位数。 eg: one hundred and one nine hundred and ninety-nine 156—读作： 709—读作： 1000以上的大数，使用计数符号，每三位加以逗号，从第一个逗号起单位依次为thousand, million, billion.“万”表达为ten thousand 【考考你】The road is over___________ metres long. A. six hundred and fifty-two B. six hundres and fifty-two C. six hundred, fifty-two D. six hundred, fifty and two 【关于基数词的重点与考点：】 基数词表示顺序编号时：名词+基数词 ，此时两个词的首字母都要大些。 Class Three Room 5 Lesson One 【考考你】Now, everyone, please turn to Page ______and look at the ______picture. A. Twelve; fifth B. Twelfth; fifth C. Twelve; five D. Twelfth; five 确数与概数的表达。 确数：基数词+单位+复数名词： two hundred students 200名学生 概数：单位加S +of+复数名词：thousands of visitors 成千上万的游客 “整十加S” 用于表示“几十年代”或“某人几十多岁时” In the 1960s, people had to lead a poor life. 在20世纪60年代，人们不得不过着贫困的生活。 He invented many things in his twenties. 他在20多岁时就发明了很多东西。 【考考你】My grandma is in her ____________(八十多岁),but she can still take care of herself. 语法二、序数词 (1)序数词的构成 表示顺序先后的数词叫序数词。序数词大多由基数词变形而成，所以掌握了基数词和基变序的方法，序数词也就简单啦。 基变序的方法： 基变序，有规律，词尾加上th; four-fourth six-sixth 一二三，单独记；八减t,九去e; first, second, third eighth, ninth ve变f；遇y变ie,词尾再加th。 five-fifth twelve-twelfth twenty-twentieth 若遇几十几，只变个位就可以。 twenty-two twenty-second 注意：four—fourteen—forty—forty-two nine—nineteen—ninety—ninety-nine fourth—fourteenth—fortieth—forty-second ninth—nineteenth—ninetieth—ninety-ninth 【考考你】--How was your weekend? --Great! It was my grandpa’s ______birthday. We enjoyed ourselves. A. seventy B. sev