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1、教学设计教学设计一、教学目标1.掌握基数词的构成及其用法。2.掌握序数词的构成及其用法。3.了解其他数词的用法。二、教学重难点 1.基数词 2.序数词三、教学方法问题探究法四、教学过程Step1：独学1、如何读大数？比如 765,987,364,237 87,546,364,321 843,657,8052、单位词的用法？3、如何表示“在某人几十岁的时候”4、如何表示年代 ？5、如何表示时间？6、基数词如何变序数词？7、冠词与序数词的连用？8、编号如房间号等表示法？9、年月日的表示法及读法？10、分数表示法及主谓一致？11、百分数的表示法？12、数学公式表示法？Step2:对学、群学一、基数词
2、一、基数词探究一：基数词的读法探究一：基数词的读法把下面的口诀补充完整，总结较大数字的读写方法。【 口诀】数字读写so easy， 从右至左去分位。 三位一体加逗号， thousand、 million、billion 读出来。千百位间_用，百十位间用“_”中。十个位间_，空位用 “_” 应记清。如： 1,234,007 读作 one million, two hundred andthirty-four thousand and seveneg: 5,991,892,725five billionbillion, nine hundred and ninety-one millionmill
3、ion, eight hundredand ninety-two thousandthousand, seven hundred and twenty-five.80,563,371,461探究二：单位词的用法探究二：单位词的用法hundred， thousand， million， billion 等用在具体的数字后面时不能加或；hundred， thousand， million， billion 等前面没有具体的数字时通常加或。eg: eight thousand people 八千人thousands of people 成千上万的人巧记：巧记： 模糊数字俩有模糊数字俩有（有（有 of
4、of 有有 s s）具体数字俩无具体数字俩无（无（无 ofof 无无 s s）1探究三：探究三：in +in +ones + “ones + “整十整十” ”的基数词复数，表示的基数词复数，表示“ “在某人几十岁时在某人几十岁时” ”。He invented many things in his.他在他二十几岁时他发明了很多东西。探究四：表示年代时，在年份的阿拉伯数字后面加探究四：表示年代时，在年份的阿拉伯数字后面加 s s 或或s s。eg： in the 1990s= in the 1990s在二十世纪九十年代探究五：时间的表达方式探究五：时间的表达方式1、“整点”时，可用“基数词+ocl
5、ock”，oclock 也可省略 eg: 9：00 (oclock)。2、“非整点法 ”1）顺读法：即“先时后分”，直接用基数词读出。eg：4：10 four ten9:50_2)逆读法：即“先分后时” 分钟小于或等于 30 时，用“分钟数+past+钟点数”形式。eg：7：20twenty past seven8:05_当分钟数=30 时，可用 half 代替 thirty.eg：10：30thirty / half past ten8:30_当分钟数=15 时，可用 fifteen 表达,也可用 a quarter 表达。eg：6：15a quarter past six = _分钟大于
6、30 分钟时，用“ （60-分钟数 + to + （钟点数+1）”形式。eg： 7： 50ten to eight10:45 _ = _【中考真题再现】【中考真题再现】() Its 11:45. Yes, its _. (漳州市)A . fifteen past twelveB. fifteen from twelveC. a quarter past twelveD. a quarter to twelve探究六：探究六： “ “数字连词符数字连词符+ +单数名词单数名词” ”或或“ “数字连词符数字连词符+ +单数名词连词符单数名词连词符+ +形容形容词词” ”构成复合形式作定语。构成复合
7、形式作定语。She is anchinese girl.她是一个十八岁的中国女孩。We have aholiday in October.在十月我们有一个七天的假期。注意注意：a ten-minute walk = ten minutes walk 步行10 分钟的路程探究七：探究七： “基数词基数词more”more”或或“another“another基数词基数词” ” 表示表示 “ “在原来的基础上增加的数在原来的基础上增加的数量量” ”。eg： I need 10 more days= I needdays.我需要另外的十天。探究八：基数词习惯用法探究八：基数词习惯用法one and
8、a half apples = one apple and a half一个半苹果half an apple 半个苹果one or two apples= one apple or two 一俩个苹果二、序数词二、序数词探究九探究九基数词变序数词基数词变序数词完成下面的口诀，掌握基数词改为序数词的方法。基变序,有规律,词尾要加 th .一二三,特殊记，-th,从 4 起；见到 ve 变 f，然后再加-th；8 去,9 去，然后再加-th；2ty 变作 tie,然后再加 th；若遇几十几,只变个位就可以.你能写出：第一，第二第三第五第八第九第十二第二十这几个序数词吗？探究十：探究十： 冠词与序数
9、词冠词与序数词1.1. The +The + 序数词序数词表示the first lessonthe first lesson2.2. a/an +a/an +序数词序数词表示She is going to try a third time.她准备再试一次(第三次)。探究十一探究十一 ：年、月、日的表达：年、月、日的表达 &世纪年代的表示方法世纪年代的表示方法(1)英语中年、月、日的排列顺序为：月-日-年（常用）或 日-月-年，日期和年之间，一般用逗号隔开。eg: 2008 年 5 月 1 日： May 1, 2008/May 1st , 2008 ； 1 May, 2008/ 1st May
10、,2008.2013 年 4 月 8 日_/_= _ /_(2）世纪年代的表示方法1) （在）20 世纪( in ) the 20th century（在）21 世纪_2) （在）19 97 年（in ） 1997 ( nineteen ninety seven )（在）2013 年_3) （在） 80 年代( in ) the eighties（在）90 年代_4)在 20 世纪 90 年代in the 1990s / 1990s在 20 世纪 70 年代_【中考真题再现】【中考真题再现】()1. The year “1999” should be read “ The year _”.A.
11、 nineteen and ninety-nineB. nineteen hundred and ninety-nineC. one thousand nine hundred and ninety-nineD. nineteen ninety-nine() 2. They moved to Beijing _.A. in 1980sB. in the 1980C. in the 1980sD. on the 1980s探究十二：编号的表示法探究十二：编号的表示法名词 + 基数词（此时名词和数词的第一个字母要大写）= the + 序数词+名词eg:1）Lesson One = _第一课2） t
12、he second page = _第二页注意；如果数字较大时， 特别是房间、页码、公交车号、电话号码等，多用“名词+基数词”形式。【中考真题再现】【中考真题再现】()1. There is a wrong word in Line _. Where? In the _ line.A. Two; twoB. Second; twoC. Two; secondD. Second; second()2. Today we are going to learn _. Thats nice, Mr. Wang.A. Lesson Second B. the Lesson Two C. Lesson T
13、woD. second lesson探究十三：分数的表达方式探究十三：分数的表达方式1)1) 分子用分子用_，分母用，分母用_(_(子基母序子基母序) )，分子大于，分子大于 1 1，分母用，分母用_3数。数。eg: 1/3one third6/9 _ _注意: 12 用 a / one half ( = one second ) ，14 用 a quarter (= one fourth )eg: 3/4 _ = _2)2) 分数作主语时，谓语动词跟分数作主语时，谓语动词跟 ofof 后的名词单复数一致。后的名词单复数一致。eg:1) Two thirds of the students _
14、 (be) boys in Class2)Half of her money _ (be) spent on clothes last month.【中考真题再现】【中考真题再现】() _ of the land in that district _ covered with trees and grass. (常州)A. Two fifths; isB. Two fifth; areC. Two fifth; isD. Two fifths; are拓展：小数表达法拓展：小数表达法5.795.79five point seven ninefive point seven nine4.784.
15、78百分数表达法百分数表达法16%sixteen percent18%探究十四：其它重要表达方式的考法探究十四：其它重要表达方式的考法1 1、数学符号表达法、数学符号表达法一些数学公式的读法：“加”用plus/and，“减”用minus，“乘”用times，“除”用divided by，动词多用单数，如：358 读作：Three plus/and five is eight.927 读作：Nine minus two is seven.6530 读作：Five times six is thirty.842 读作：Eight divided by four is two.2 2、时间、距离、金
16、钱数字名词做主语时谓语动词用单数、时间、距离、金钱数字名词做主语时谓语动词用单数 。eg: Ten days is enough for the job.【中考真题再现】【中考真题再现】() _twenty minutes enough for you to finish the work? (巴中)A. AreB. IsC. HaveD. HasStep3: 组内小展示 班内大展示1. The government of Linyi is building _ cheap and good houses for the people.A. thousandB. thousandsC. tho
17、usand ofD. thousands of2. Did you know that the Garth is home to _ animals?A. millionB. millionsC. million ofD. millions of3. October is the _ (ten) month of the year.4. Tom has just finished writing a _ article.A. nine-hundred-wordsB. nine-hundreds-wordC. nine-hundred-wordD. nine-hundreds-words5. I
18、 dont believe that this _ boy can paint such a nice picture.A. five years oldB. five-years-oldC. five-year-old6. Theaction film has attracted millions of young people to the cinema.A. 130-minuteB. 130-minutesC. 130 minuteD.130 minutes7. The number of the students in our school is about nine _. _ of
19、them areboys.A. hundred; Two thirdsB. hundred; Two thirdC. hundreds; Two thirdsD. hundreds; Two third48. About _of the students in Grade Nine this year were born in the_.A. three five; 1996.B. three fifths; 1990sC. third fifth; 1997.D. third fifths; 1990s9. May is the _ month of a year.A. fiftyB. fi
20、fteenC. fifthD. five10. Please turnto page _ and look at the _picture in this unit.A. twentieth; oneB. twenty; oneC. twentieth; firstD. twenty; first11.Would you like to have _ apples?No, thank you. Ive had enough.A. other twoB. another twoC. more twoD. two others12. In order to finish the project,
21、well have to work _ hours a day.A. more twoB. two moreC. two another13. its said that _ of the water around the world _ polluted.A. two third; hasB. two thirds; haveC. two third; areD. two thirds; is14. Lindas mother looks young, but actually is in her _.A. sixtiesB. sixtiethC. sixty years old15. De
22、cember is _ month of the year.A. twelveB. the twelfthC. the twelveth16“Food Safety” has become one of the hottest topics recently.Yeah, it receives _ Internet hits(点击) a day.A. thousandsB. thousand ofC. thousands ofD. ten thousands17. The winner of the singing competition was a _ girl called Zhang M
23、ei fromChina.A. 19-years-ol dB.19-year-oldC. 19-year-olds.18. The earthquake in Yaan left _ people homeless.A. two thousandB. thousands ofC. two thousands ofD. two thousand of19.doctors are against H7N9 in China.A. ThousandsB. A thousand ofC. Thousands of20. Lincoln was born on _.A. February 12, 180
24、9B. 1809, February 12C. 1809, 12 FebruaryD. February 1809, 1221. A _ boy can sing the English song very well.A. ten-year-oldB. ten years oldC. ten-year-oldD. fifth years old22. The number 4,123 is read _.A. four thousand one hundred and twenty-threeB. four thousand and onehundred twenty-threeC. four
25、 thousand and a hundred and twenty-threeD. four thousands a hundredand twenty-three23. The old professor still works hard though he is _.A. in his sixtyB. in his sixtiesC. in sixtiesD. in the sixty24. How many new words are there in _ lesson?There are only _.A. five; fifthB. fifth; fiveC. the fifth; the fiveD. the fifth; five25. Youve done it twice. Why not try _ time?A. thirdB. the thirdC. a thirdD. once26. Which is the _ month? Its September.A. nineB. ninethC. ninthD. ninety5
