1、 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 87,546,364,321 843,657,805 2、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:
2、对学、群学一、基数词探究一：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 and thirty-four thousand and seveneg: 5,991,892,725 five billion, nine hundred and ninety-one million, eight hundred and n
3、inety-two thousand, seven hundred and twenty-five. 80,563,371,461 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： 模糊数字俩有 （有of 有s） 具体数字俩无 （无of 无s）探究三：in + ones + “整十”的基数词复数，表示“在某人几
4、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s或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1、“整点”时，可用“基数词+oclock”，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 ten 9:50 _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：7：20 twenty p
5、ast seven 8:05 _当分钟数=30时，可用half代替thirty. eg：10：30 thirty / half past ten 8:30_当分钟数=15时，可用fifteen表达,也可用a quarter表达。eg：6：15 a quarter past six = _ 分钟大于 30分钟时，用“ （60-分钟数+ to + （钟点数+1）”形式。eg：7：50 ten to eight 10:45 _ = _【中考真题再现】( ) Its 11:45. Yes, its _. (漳州市) A. fifteen past twelve B. fifteen from twel
6、ve C. a quarter past twelve D. a quarter to twelve探究六： “数字连词符+单数名词”或“数字连词符+单数名词连词符+形容词”构成复合形式作定语。 She is an chinese girl.她是一个十八岁的中国女孩。We have a holiday in October.在十月我们有一个七天的假期。注意：a ten-minute walk = ten minutes walk 步行10分钟的路程探究七：“基数词more”或“another基数词” 表示 “在原来的基础上增加的数量”。eg： I need 10 more days= I ne
7、ed days. 我需要另外的十天。探究八：基数词习惯用法 one and 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、序数词探究九 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；ty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
8、 这几个序数词吗？探究十： 冠词与序数词1. The + 序数词 表示 the first lesson2. a/an +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 ：年、月、日的表达 &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, 2008. 2013年4月8日 _/_= _ / _(2）世纪年代的表示方法1) （
9、在）20世纪 ( in ) the 20th century （在）21世纪_2) （在）1997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】( )1. The year “1999” should be read “ The year _”. A. nineteen and ninety-nine B. nineteen hundred and ninety-n
10、ine C. one thousand nine hundred and ninety-nine D. nineteen ninety-nine( ) 2. They moved to Beijing _. A. in 1980s B. in the 1980 C. in the 1980s D. on the 1980s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） the 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+
11、基数词”形式。【中考真题再现】( )1. There is a wrong word in Line _. Where? In the _ line. A. Two; two B. Second; two C. Two; second D. Second; second( )2. Today we are going to learn _. Thats nice, Mr. Wang. A. Lesson Second B. the Lesson Two C. Lesson Two D. second lesson 探究十三：分数的表达方式1) 分子用_，分母用_(子基母序)，分子大于1，分母用
12、_数。eg: 1/3 one third 6/9 _注意: 12 用a / one half ( = one second ) ，14用a quarter (= one fourth ) eg: 3/4 _ = _2) 分数作主语时，谓语动词跟of后的名词单复数一致。eg: 1) Two thirds of the students _ (be) boys in Class 2) Half of her money _ (be) spent on clothes last month.【中考真题再现】( ) _ of the land in that district _ covered wi
13、th trees and grass. (常州) A. Two fifths; is B. Two fifth; are C. Two fifth; is D. Two fifths; are拓展：小数表达法 5.79 five point seven nine 4.78 百分数表达法 16% sixteen percent 18% 探究十四：其它重要表达方式的考法1、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
14、：Nine minus two is seven.6530读作：Five times six is thirty.842读作：Eight divided by four is two.2、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】 ( ) _ twenty minutes enough for you to finish the work? (巴中) A. Are B. Is C. Have D. HasStep3: 组内小展示 班内大展示1. The government of Linyi is
15、 building _ cheap and good houses for the people. A. thousand B. thousands C. thousand of D. 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.
16、nine-hundred-words B. nine-hundreds-word C. nine-hundred-word D. nine-hundreds-words5. I dont believe that this _ boy can paint such a nice picture. A. five years old B. five-years-old C. five-year-old6. The action film has attracted millions of young people to the cinema.A. 130-minuteB. 130-minutes
17、C. 130 minuteD.130 minutes7. The number of the students in our school is about nine _. _ of them are boys.A. hundred; Two thirds B. hundred; Two third C. hundreds; Two thirds D. hundreds; Two third8. About _of the students in Grade Nine this year were born in the_.A. three five; 1996. B. three fifth
18、s; 1990s C. third fifth; 1997. D. third fifths; 1990s9. May is the _ month of a year.A. fifty B. fifteen C. fifth D. five10. Please turn to page _ and look at the _picture in this unit.A. twentieth; one B. twenty; one C. twentieth; first D. twenty; first11.Would you like to have _ apples? No, thank
19、you. Ive had enough. A. other two B. another two C. more two D. two others 12. In order to finish the project, well have to work _ hours a day. A. more two B. two more C. two another13. its said that _ of the water around the world _ polluted.A. two third; hasB. two thirds; have C. two third; are D.
20、 two thirds; is14. Lindas mother looks young, but actually is in her _.A. sixties B. sixtieth C. sixty years old15. December is _ month of the year.A. twelve B. the twelfth C. the twelveth16“Food Safety” has become one of the hottest topics recently.Yeah, it receives _ Internet hits(点击) a day. A. th
21、ousandsB. thousand of C. thousands of D. ten thousands17. The winner of the singing competition was a _ girl called Zhang Mei from China. A. 19-years-old B.19-year-old C. 19-year-olds.18. The earthquake in Yaan left _ people homeless. A. two thousand B. thousands of C. two thousands of D. two thousa
22、nd of19. doctors are against H7N9 in China. A. Thousands B. A thousand of C. Thousands of20. Lincoln was born on _. A. February 12, 1809 B. 1809, February 12 C. 1809, 12 February D. February 1809, 1221. A _ boy can sing the English song very well. A. ten-year-old B. ten years old C. ten-year-old D.
23、fifth years old22. The number 4,123 is read _. A.four thousand one hundred and twenty-three B. four thousand and one hundred twenty-three C.four thousand and a hundred and twenty-three D. four thousands a hundred and twenty-three 23. The old professor still works hard though he is _. A. in his sixty
24、 B. in his sixties C. in sixties D. in the sixty24. How many new words are there in _ lesson? There are only _. A. five; fifth B. fifth; five C. the fifth; the five D. the fifth; five25. Youve done it twice. Why not try _ time? A. third B. the third C. a third D. once26. Which is the_ month? Its September.A. nine B. nineth C. ninth D. ninety6
