基数词和序数词(共16页).doc

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1、精选优质文档-倾情为你奉上笃正教育学科辅导讲义年 级： 辅导科目：英语 课时数： 时间：课 题基数词，序数词教学目的能够正确地使用基数词和序数词教学内容数词一、定义及分类：数词分为基数词和序数词。用于表示事物数目的词称为基数词，表示事物顺序的词称为序数词。e.g. one; ten; fifty-two (基数词） first; tenth; fiftieth(序数词）二、基数词：（1） 1-12： one; two; three; four; five; six; seven; eight; nine; ten; eleven; twelve（2） 13-19：thirteen; fourt

2、een; fifteen; sixteen; seventeen; eighteen; nineteen（3） 20-90：twenty; thirty; forty; fifty; sixty; seventy; eighty; ninety（4） 21-29由十位数20加个位数1-9构成，中间须有连字符“”（5） 0 twenty-one; twenty-two; twenty-three（5） 百位数由1-9加hundred构成，如包含十位数及个位数，中间用and连接 one hundred 100 ; two hundred 200(不能变复数） three hundred and f

3、orty-one 341 seven hundred and six 706 twelve hundred 1200 (1100-1900之间的整数常用hundred表示） （6）千位数由1-9加thousand构成，其后的百十个位数构成方法同前 one thousand 1000 ; two thousand 2000 five thousand six hundred 5600 three thousand five hundred and thirty-seven 3537 数词（7） 英语中没有“万”这个单位，万也用thousand表示 twenty thousand 2万；ten t

4、housand one hundred 10100 fifty-five thousand four hundred and ninety-three 55493三、时间、年份、倍数、分数1. 表达时间的方法： 1）先说分，再加介词“past”或“to”，然后说小时。 若分数为15分、30分、45分，则用“quarter”、“half”代替具体的分数。 分数在30分以内，用“past”，如过了30分，用“to”。 9:15 读作：a quarter past nine（英式） 或 a quarter after nine（美式） 11:30读作：half past eleven（英式） 或 h

5、alf after eleven（美式） 7:50 读作：ten to eight（英式） 或 ten before eight（美式） 2）不用介词，先说小时数，再说分数。 4:30 p.m. 读作：four thirty p.m. 5:45 p.m. 读作：five forty-five p.m. 2. 年、年代、月份的表达法： 541 B.C. 读作：five forty-one B.C 或 five hundred and forty-one B.C. 1800 读作：eighteen hundred 1701 读作：seventeen oh one 或 seventeen hundr

6、ed and one 2000 读作：two thousand （3）年代指十年（decade），采用“基数词加上十位数复数”的形式来表示，前面与介词“in”和定冠词“the”搭配。 in the 1950s 读作：in the nineteen fifties（二十世纪五十年代）（4）世纪的计算方法：百位数加1，再去掉后两位数字即可（5）如要表示一个年代的初期、中期、末期， 可在年代前分别加“early，mid，late”。 如：in the early 1770s 数词3. 各月份及其缩写式： January Jan. July - February Feb. August Aug. Ma

7、rch Mar. September Sept. April - October Oct. May - November Nov. June - December Dec.4. 倍数的表达：表示三以上的倍数用times,两倍用twice e.g. This room is three times as large as that one.5. 表示分数时，分子须用基数词，分母用序数词。分子如是1以上，须用复数形式 e.g. 1/3 读作：one-third 2/3 读作：two-thirds四、序数词 基数词变序数词的方法：(1) 基变序，有规律；词尾要加th。(2) 一二三，特殊记；词尾分别

8、tdd。(3) 八去t ，九去e ；ve则以f替。(4) ty 则变作 ti ; 后面还有一个e。(5) 要是遇到几十几；只将个位变成序。 e.g. eighteighth nineninth twelvetwelfth onefirst twosecond threethird twentytwentieth twenty-one twenty-first一. 根据中文意思，填写出英文单词。（每空一词） 第一： _第二：_第三：_第四：_第五：_第六：_第七：_第八：_第九：_第二十：_第三十：_一月： _二月：_三月：_四月：_五月：_六月：_七月：_八月：_九月：_十月：_十一月：_十二

9、月：_ 二. 根据图片提示，写出下列单词。J_n_ _r _缩写：Jan.F_ br_ _ ry缩写： Feb.M_ _ ch缩写： Mar.Ap_ _ _缩写： Apr.M_ _无缩写J_ n _无缩写J_ l_无缩写A_ g_s_缩写： Aug.S_ pt _ mb_ _缩写： Sept.O_ t_ b_ r缩写：Oct.N_ v_ mb _r缩写： Nov.D_ c_ mb _r缩写： Dec.节日 ：_月份： _节日 ：_月份： _节日 ：_月份： _节日 ：_月份： _节日 ：_月份： _节日 ：_月份： _Part 2 “序数词知多少”（复习巩固 “序数词”知识）一. 基数词变序数

10、词变化规律变化口诀 *基变序，有规律。一二三，特殊记，词尾各是t,d,d。 first second thirdth 四加起。fourthsixth八去t，九去e，f来把ve替，y要变ie。eighthninth fifth twentieth若是遇到几十几，只变个位就可以。thirty-first二.【注意】一般情况下，序数词前面要有the。如：Im always the first one in my class. (我在我们班经常是第一名。)三.【不用the 的情况】1. 当序数词前有形容词性物主代词或名词所有格修饰时,序数词前不用the。 Mother was my first tea

11、cher in my life.妈妈是我生命中的第一个老师. Tom is Lilys third child. Tom是Lily的第三个孩子。2. 有些习语中的序数词前没有冠词： atfirst：开始 atfirstsight：乍看起来 firstofall：首先四. 序数词在“日期”中用法。英文日期表达一： 月份 + 序数词 6月1日 写作： June 1st 读作： June the first 英文日期表达二： the + 序数词+ of + 月份3月8日 写作和读作： the eighth of March 【Exercise】一. 把下列基数词变成序数词。 1. one_2.two

12、 _3.three _ 4. five _ 5.twelve _ 6. eight _ 7. nine _8. thirty _9.forty-four _二. 写出下列日期的英文表达。 1. 2月1日 _ 2. 9月10日 _ 3. 5月20日 _三. 选择填空。( ) 1. Childrens Day is on _ of June. A. first B. oneC. the first D. second( ) 2. There are _ days in a week. A. the seven B. seventhC. the seventhD. seven( ) 3. Sunda

13、y is _ day of a week. A. one B. first C. the first D.the second( ) 4. Toms _ book is over there. A. the secondB. two C. second D. the two 四. 用括号内所给词的适当形式填空。 1. Linda is _ (one) to get up in her family. 2. There are_(seven)days in a week. Thursday is _ (five) day of a week in England. 3. Edison is _

14、(twenty-three) to reach the finish line(到达终点) in the race. 4. This is Bills_(twelve) birthday. 5. Her_(nine) birthday present is a beautiful dress.Part 3 钟点表示法时间的表达时间的英文表达法( 1 ) 表示整点时：时钟 + oclock如：4:00-four oclock 四点钟12:00 _ 8:00_左to 右 past 中间有个half126931257841011TOPAST( 2 ) 在30分钟以内：分钟 + past + 时钟 =

15、“几点过了几分”如：8:20-twenty past eight 八点过了二十分 7:29 _ 5: 10 _( 3 ) 在30分钟以外：（60分钟原分钟）+ to + (原小时 + 1 )=“差几分到几点”如：6：59 one to seven 差一分到七点6:40 _ 9: 35 _注意：1. 表示15分钟时：可用 a quarter (一刻钟)表示。 如：8：15 a quarter past eight 9:15 _ 10:15_ 3:45 _ 4: 45 _ 2. 表示30分钟时：可用 half 表示。 如：5：30 half past five 8:30 _ 9: 30 _ 例句：

16、Its time to sleep. 该是时候睡觉了。 Its time to它的意思是“到的时间了”，“该了”。对比：Its time to + 动词原形 Its time to have dinner. Its time for +名词 Its time for dinner.【 Exercises】一. 用英文写出以下时间。 _ _ _ _ _二. 选择填空。Its time to _ (go to school, school).Its time to _ (get up, bed).Its time to _(do my homework, homework).Its time fo

17、r _ (have breakfast, breakfast).Its time for _ (have lunch, lunch).Its time to _ (have dinner, dinner).三. 补全句子。 1. 该吃午饭了。Its time for _.= Its time to _ _. 2. 该上课了。Its time_ _.= Its time _ _ _. 3. 该玩游戏了。Its time _ _.= Its time _ _ _.一、用英语写出下列时间。（两种方法）1. 一点十五分_ _ 2. 三点五十分_ _3. 九点十五分_ _4. 十一点二十分_ _5. 四

18、点四十五分_ _二、按要求完成句子。1. Linda does her homework at five fifty. (改为同义句) Linda does her homework at _ _ _.2. He made clothes for two quarters. (改为同义句) He made clothes for _ _. / _ _ _.3. What is the time? (改为同义句) _ _ is it?4. Mr Green goes to work at seven ten every day. (划线部分提问) _ _ _ Mr Green _ to work

19、 every day? 三.阅读理解 根据短文内容判断正“T”，误“F”。Whose Car? One day Mr. and Mrs. White went shopping by car. They stopped their car near a shop. They bought a lot of things and they wanted to put the thing into the car. But Mr. White couldnt open the door of the car, so they asked a policeman to help them. The

20、policeman was very friendly. He started to open the car with a big hammer(锤子). Suddenly, a man came up and shouted(大喊), “What are you doing with my car?” Mr. and Mrs. White had a look at the cars number and they were surprised(大吃一惊). It wasnt their car.( ) 1. Mr. and Mrs. White went shopping by plan

21、e.( ) 2. They stopped their car in the shop.( ) 3. They wanted to give their things to a policeman.( ) 4. The policeman was very friendly.( ) 5. From the passage, we know Mr. and Mrs. made a mistake(错误).四. 按实际情况回答问题。 1. Would you like to see a film with me this Friday?_ 2. Would you like some coke?

22、3. How would you like to travel? 1. How many triangles can you see in the picture? I can see_.2. They are watching a film in three-D. (翻译句子)_ 3. The boys room is at sixes and sevens. (翻译句子)_4. Tom is six to one there.（翻译句子）_作业布置一. 根据所给中文完成句子。 1. Jack gets up _ (在六点半) in the morning.2. Our classroom

23、is _(在第三层).3. Our class begins _(在七点四十分) in the morning.4. She goes to school_ (从周一到周五).二. 对划线部分提问。1. I can see one orange in the box. _ _ _ _ you see in the box?2. This dress is 20 dollars. _ _ _ this dress?3. He is in Class 1. _ _ _ he in?4. My cousin is nine years old. _ _ _ your cousin?5. He doe

24、s his homework at six. _ _ _ he _ his homework?三. 用英语写出下列日期。 _ _ _ _四在句中填入适当的词。1. - _ is Halloween? - Its _ October.2. - _ the _ today? Its June 1st. - Its _ _ _.3. - Is Womens Day _ _ _ ? - Yes, it is.4. Mid-Autumn Festival is usually _ _ or _.5. Hong Kong came back _ 1997.五阅读理解。Hello, my name is L

25、i Ming. My birthday is June 9th. My mothers birthday is June 14th. My grandpas birthday is June 23th.My grandpa is in America, my grandpa lives with my uncle Bill and aunt Mary in America, so I usually make an e-card to him for his birthday. My grandmas birthday is in July, it is very hot and sunny

26、in July, then when her birthday is coming ,we often go swimming for her birthday. ( )1.His grandpa lives with his uncles in _ . A. China B. UK C. America ( )2.How many birthdays are there in June?A. 2 B. 4 C.3 ( )3.What will Li Ming do for his grandpas birthday? A. send an e -mail B. send an e-card C. send a birthday cake4.When is Li Mings birthday _ .5.What do they often do on his grandmas birthday? They_ .专心-专注-专业