江苏省盐城东台市唐洋镇英语二轮复习 数词教案.doc

江苏省盐城东台市唐洋镇英语二轮复习 数词教案【教学目标】1.掌握数词的含义2.掌握数词在各种语境中的应用【重点难点】 一，基数词与序数词的概念二, 基数词如何转换成序数词三,如何在各种语境中正确应用数词【预习指导】 一，什么是基数词？ （表示人或事物数目的词叫基数词。）n 基数词的构成1-12的数, 这些数词在中考中出现的频率较高，需要识记1 one 2 two 3 three 4 four 5 five 6 six7 seven 8 eight 9 nine 10 ten 11 eleven 12 twelve13-19的词（这些词要注意观察，根据规律teen记忆）13 thirteen 14 fourteen 15 fifteen 16 sixteen17 seventeen 18 eighteen 19 nineteen20-90整十的数这些词要根据规律ty记忆，中考中出现频率较高的是twenty,forty,fifty,ninety20twenty 30thirty 40forty 50fifty60sixty 70seventy 80eighty 90ninety 100one hundred几十几的两位数（由整十的数加“-”加1-9的个位数21 twenty-one 34 thirty-four 36 thirty-six 48 forty-eight53 fifty-three 67 sixty-seven 72 seventy-two 75 seventy-five85 eighty-five 88 eighty-eight 98 ninety-eight 99 ninety-nine三位数（百位后加hundred,百位和十位之间用and连接，十位和个位之间用几十几的读法和写法）125 one hundred and twenty-five368 three hundred and sixty-eight450 four hundred and fifty888 eight hundred and eighty-eight999 nine hundred and ninety-nine108 one hundred and eight509 five hundred and ninen 百hundred, 千thousand, 百万million, 十亿billionn 四位数或四位以上的数, 先从右往左数，每三位用“，”隔开，第一个“，”表示thousand, 第二个“，”表示million, 第三个“，”表示billion, 逗号与逗号之间用几百几十几的表达方法。3333333333333，333，333，333thirty-three billion, three hundred and thirty-three milliom, three hundred and thirty-three thousand, three hundred and thirty-three 570208944059570,208,944,059five hundred and seventy billion, two hundred and eight milliom, nine hundred and forty-four thousand, and fifty-ninen 表示具体，准确的数时，hundred, thousand, milliom, billion等词后面不能加”s”, 如：five hundred students, nine thousand people, two millionn 当表示不具体，不准确的数时，加“s”，与”of”连用。如：hundreds of students, millioms of trees二，什么是序数词？n 表示人或事物顺序的词叫序数词。one first two second three third four fourthfive fifth six sixth eight eighth nine ninth twelve twelfth thirteen thirteenth fourteen fourteenth eighteen eighteenthnineteen nineteenth twenty twentieth eighty eightieth ninety ninetieth one hundred one hundredth如何将基数词转换成序数词？(口诀)n 基变序，有规律n 末尾加上“th” four-fourthn 一二三，特殊记 first second thirdn “ve”要用“f”替 five-fifth twelve-twelfthn 八去“t”,九去“e” eight-eighth nine-ninthn 末尾“y”变“ie” twenty-twentiethn 如果遇到几十几n 只变末位就可以 thiety-one-thirty-first eighty-five-eighty-fifth当序数词用阿拉伯数字表示时，必须在数字后加上相应序数词的最后两个字母，如：n 5353rd 598 598th序数词前一般要用定冠词”the”，如果序数词前用“a”,“an”，则表示“再一，又一”（没有具体的范围限制）though he had failed twice, he wanted to try a third time.the little monkey had had three apples, and he wanted a fourth one.他还想再吃一个三，数词在具体语境中的使用编号lesson 5 room 608 class two, grade nine row 3 number 8时间表达法n 9:00 nine oclockn 8:20 eight twenty twenty past eightn 9:55 nine fifty-five five to tenn 11:30 eleven thirty half past elevenn 7:45 seven forty-five a quarter to eightn 6:15 six fifteen a quarter past six表示“几十年代”，“几十岁”n in the 1870s 在十九世纪七十年代 in the 1990s 在二十世纪九十年代n in ones thirties 在某人30多岁时 in her eighties 在她80多岁时“几个半” 表达法n 1.数词and a half名词复数2.数词名词复数and a half如：three and a half days three days and a half one and a half apples one apple and a half分数n 分子基数词，分母序数词，分子大于1，分母加“s” 这些词的考查往往与主谓一致相联系 2/5 two fifths 1/9 one ninth 3/8 three eighths 3/4 three fourths three quarters表示次数n 一次once 两次twice 三次three times 四次four timesn 每多久一次 every+基数词+名词复数 如：每四年一次every four years=every other three yearsn we have chemistry classes _ day, monday, wednesday and friday. a. each other b. every other c. this and other d. all other每隔一天every other day倍数n 表“几倍大小（长短，数量）”，由“倍数+ the size(length,amount)”构成 the earth is forty-nine times the size of the moon.n 表“*比*大几倍”, 由“倍数+形容词/副词的比较级+than+被比较部分”组成 this box is four times bigger than that one.n 表“*是*倍”,由“倍数+as+形容词+as+被比较部分”组成。 our school is twice as big as theirs.【教学过程】 导入：课前播放一段关于刘翔比赛获得冠军的视频。（上课铃响）t: good morning,everyone! how are you today?ss:fine,thank you! and you?t: im fine, too! 提问：whats the weather like today?或how is the weather today?ss:（根据具体天气情况回答）t: whats the time, please?/what time is it now,please?ss:t: whats your number?s:im number（多提问几个学生）t:i have some pictures here.id like to share them with you. would you like to?（展示生活中各种与数字有关的图片）t:there is one special thing in all the pictures, can you tell us? the same thing appears in all of the pictures,whats it,can you tell us?ss:(keyword:number/numbers)t: can you use a sentence to express the relationship between numbers and our life?s1 s2 s3 s4 s5 (numbers are everywhere. numbers are at anytime. numbers are bring us happiness.sometimes numbers make us sad. )t:good! all of you are so clever. （3分钟）t:today well revise “numbers”.(点击ppt,出现：中考二轮复习数词)（点击ppt,呈现“本课重点掌握”）t:first，please learn by yourselves. （分发讲学案，学生自学5分钟）（学生自习讲学案5分钟，开始提问）t:ok,now everyone,answer the questions. lets have a try!一，什么是基数词？二，什么是序数词？三，如何将基数词转换成序数词？四，当序数词用阿拉伯数字表示时，怎么办？(最后两个字母 21st, 42nd, 63rd , 89th)五，分数如何表达？ 六，“每多久一次”怎么表达？（every+基数词+名词复数奥运会，亚运会，世界杯等每四年一次） （3分钟）点击屏幕中考对数词的考查主要集中在： （1分钟）n 1、掌握1-100的基数词和序数词的构成及其主要用法；n 2、掌握年、月、日、时的基本表达方式及其与之相应的介词搭配；n 3、掌握日常交际活动中涉及到的数字的表达方法；n 4、了解数词的某些特殊用法。典 例 解 析 （3分钟）1. every spring, people plant _ trees to make our city more beautiful.a. five thousands of b. five thousands c. thousand of d. thousands of解析：答案选d。thousand有两个用法，一为表示具体的数目，thousand只能用单数，如“两千”two thousand，另一为表示不确切的数目，thousands of成千上万，两者不能同时用，所以只能选d。2. _ student comes from france.a. twenty-three b. the twenty-three c. the twenty-third d. twenty-third解析：答案选c。这儿需弄清基数词和序数词的区别，题目中是student单数，所以不能用基数词twenty-three,否则student要变成复数，而序数词前面要加定冠词the。故选c。3. wilson lives on the tenth floor and elsa lives on the sixth floor. so wilson lives 4 floors _ elsa and elsa lives 4 floors _ wilson.a. below / above b. above / below c. on / under d. under / on解析：答案选b。住在上面或下面”用live above / below表示，再加入“几层”，而on the tenth floor表示“在第十层”，只是一个楼层。故选b。4. our school playground is about _.a. 400 metre long b. 400 metres long c. 400-metres-long d. 400-metre-long解析：答案选b。表示数字加单位的有两种形式，一种是词组，如13 years old，超过一要用复数，并且只能用在be动词后面，另一种是单词，如13-year-old，超过一不要用复数，并且只能用在名词前面。故选b。当堂检测 （学生10分钟做，2分钟对答案）一，单项选择（ ）1.there are fifty _people in this town. a. thousand b. thousands c. thousand of d. thousands of（ ）2. of the apples in the fruit bowl are soft and sweet. a. two-thirdb. second-thirdc. two-thirdsd. second-thirds（ ）3. where are they going to have the meeting? in . a. 204 roomb. room 204 c. the room 204d. the room 204（ ）4. what is the time? its (4:25). a. four twenty-five b. four past twenty-five c. twenty-five to four d. four twenty five（ ）5. please give us . a. two glasses of waters b. two glass of water c. two glasses water d. two glasses of water（ ）6. light is faster than an ordinary plane. a. two million time b. millions of time c. three millions times d. millions of times（ ）7. there are seasons in a year. the season is spring. a. four, one b. fourth, first c. fourth, one d. four, first（ ）8. she has a baby. a. ten-months-old b. ten months-old c. ten-months-olds d. ten-month-old（ ）9. it took them to finish the work last year. a. two and a half months b. two month and a half c. a half and two months d. two months and half（ ）10. whats the date today? its . a. july five b. july the five c. july fifty d. july the fifth（ ）11. she is than mary. a. older two years b. old two years c. two years old d. two years older（ ）12.-excuse me, how does this number 20,135 read? -it reads . a. twenty thousands, one hundred and thirty-five b. twenty thousand, one hundred thirty-five c. twenty thousand, one hundred and thirty-five d. twenty thousands, one hundred thirty-five 二，词汇1. monday is the_(two) day of a week. （徐州）2. how many times have you been to hong kong? _(two) . （泰州）3. when will you celebrate the success of the match? on the_ (twenty) of this month. (宿迁)4. it is october the _ (nine). its my mothers birthday. （镇江）5. treeplanting day is on the _ (twelve)of march every year. （南京）6. our school has a history of two (百) years. （常州） 三，句子翻译1.我们班五分之三的学生是女孩。 _ _ are girls. 2. 他在五十多岁时开始学习汉语。 he began to learn chinese .3.她有一个十个月大的婴儿。 she has a .4. please give us_(三瓶水).（先小组核对答案，然后公布答案）当堂检测答案单项选择1-5 acbad 6-10 dddad 11-12 dc词汇1，second 2，twice 3，twentieth 4，ninth 5，twelfth, 6，hundred完成句子1, three fifths of the students in our class2, in his fifties3，ten-month-old baby4，three bottles of watert: do you have any questions? please put up your hands.点击屏幕-我来分析中考试卷 寻找涉及数词的考点同学们，请将盐城2010年中考试卷打开（分组寻找数词考点）2008年只有一条阅读理解题涉及数词(阅读理解a/第54题)2009年，词汇题 新中国成立60周年，考了sixtieth今年是我党成立90周年，同学们认为哪个词要注意？ （3分钟）同学们，请将淮阴2010年中考试卷打开（分组寻找数词考点）（阅读理解，当堂完成- （5分钟）题型变化书面表达：1呈现调查数据，2对数据分析提出自己