1、學科：英語 任課教師：李悅 授課時間： 2016 年 3 月 11 日 星期五 教 學內 容數詞的講解與專練教 學目 標知識目標：理解數詞概念及用法能力目標：掌握常見數詞的表達法情感目標：培養學生生活中時時處處用數詞自然性，習慣性重 點難 點重點：基數詞,序數詞,分數難點：基數詞轉化為序數詞,分數的構成 教學方法: 對比,歸納演繹，游戲，多媒體呈現學 情分 析九（十）班共有學生30人，從整體來說，這班學生的學習積極性還是比較差的，與上一學年比較學習風氣有了明顯的好轉，學習的興趣濃了，學習的主動性增強了。但整體現象比較嚴重，學生們的綜合實力不太強。教 法設 計本節課主要是針對

2、數詞進行教學，首先引導學生深入課題-數詞，然后通過問答，舉例使學生理解數詞概念及其用法，并引導學生總結基數詞變序數詞的規律，接下來通過習題練習掌握，最后通過互動游戲提高學生學習數詞的積極性，在課堂將要結束時發給練習習題。學 法設 計教師通過媒體呈現引導學生上板默寫，組織討論，認識規律，掌握學習新知識的方法和途徑，最后通過練習掌握所學內容。 針 對 性 授 課數詞講解 數詞分為基數詞和序數詞兩種，一、基數詞的十個用法一)基數詞的讀法。1)1-10 : one two three four five six seven eight nine ten 2)11-19: 詞尾加-teen :thirt

3、een fourteen fifteen sixteen seventeen eighteen nineteen 其中eleven， twelve， thirteen， fifteen， eighteen為特殊形式3)幾十詞尾加-ty :twenty thirty forty fifty sixty seventy eighty ninety 其中twenty，thirty, forty，fifty，eighty為特殊形式4)21-99: 在十位與個位之間加連字符構成.21- twenty-one 99-ninety-nine5)101-999 :百位數與十位數之間要加and ,再加末尾兩位數

4、或個位數.101-one hundred and one 238-two hundred and thirty-eight320 three hundred and twenty6)1000以上的數:先將數字從右往左數,每三位數用一個逗號隔開, 從右往左第一個逗號表示 “千”讀thousand 第二個逗號表示 “百萬”讀million 第三個逗號表示 “十億”讀billion且hundred, thousand, million等用單數形式。注意，百位數hundred與十位數(或個位數)之間要用and連接。十位數與個位數之間要用連字符號“-”，如：52，368讀作：fifty-two thou

5、sand, three hundred and sixty-eight.18,657,421eighteen million ,six hundred and fifty-seven thousand ,four hundred and twenty-one. 2,648 two thousand six hundred and forty-eight16,250,064 sixteen million two hundred and fifty thousand sixty-four5,237,166,234 five billion，two hundred and thirty-seven

6、 million，one hundred and sixty-six thousand，two hundred and thirty-four二)基數詞表計量注意：基數詞表計量大于1時，它所修飾的名詞要用復數形式。如: two bottles of water (兩瓶水); three boxes of apples(三箱蘋果)。三)基數詞表番號(編號)注意：編號的事物如果數字較大，一般用基數詞表達，且放在編號的事物名詞之后。如：No.102 Middle School (102中學);Room 206 (206房間) 第207房間：Room 207如果編號的事物數字不大，也可用序數詞表達，但

7、它應放在編號名詞之前。如：the first lesson (第一課) 第五課： Lesson 5 = the fifth lesson四)基數詞表時刻注意：英語時刻表達法有兩種：一種是直接讀數字，整點：基數詞 + oclock（可以省略oclock）幾點幾分：直接表達法：先說鐘點數，后說分鐘數間接表達法：先說分鐘數，后說鐘點數，中間要用past或to連接。即：130分鐘(含30分鐘)用“分鐘數+past+鐘點數”;3159分鐘用“(60-分鐘數)+to +下一個鐘點數”。如：4:20 four twenty或 twenty past four 3:25 twenty-five (minute

8、s) past three5:45 five forty-five或 fifteen to six或 a quarter to six 3:35 twenty-five (minutes) to four以小時、分鐘為單位分別讀出數字。6:31讀作 six thirty-one 10:26讀作 ten twenty-six14:03 讀作 fourteen o three 16:15 讀作 sixteen fifteen18:30 讀作 eighteen thirty 23:55 讀作 twenty-three fifty-five注：時刻表上的時間大多采用24小時表示法，這樣就不需要用a.m

9、.表示上午，p.m.表示下午了。五)基數詞復數表歲數或年代注意：表示“幾十”的基數詞的復數形式，可用來表示某人的大概歲數或年代。世紀可以用定冠詞加序數詞加世紀century表示，也可以用定冠詞加百位進數加s表示the sixth（6th）century 公元六世紀the eighteenth（18th）century 公元十八世紀the 1900s 二十世紀the 1600s 十七世紀這里，用百位數整數表示的世紀比這一百位阿拉伯數字本身多一個世紀。年代用定冠詞及基數詞表示的世紀加十位整數的復數形式構成in the 1930s（in the thirties of the twentieth c

10、entury或 in the nineteen thirties）在二十世紀三十年代in the 1860s（in the sixties of the 19th century或 in the eighteen sixties）在十九世紀六十年代My uncle went to England in his twenties. 我叔叔在20多歲時去了英國。He became a professor in his thirtiesIt was in the 1960s那是在二十世紀六十年代。These eggs were found in the Gobi Desert by a group

11、of scientists in the 1920s.這些恐龍蛋是20世紀20年代由一群科學家在戈壁沙漠發現的。六)含基數詞的復合形容詞注意：“基數詞+名詞(+形容詞)”構成的復合形容詞作定語時，其中的名詞用單數形式。如：two-week holiday 兩周的假 ; an eighteen-meter-wide street 一條18米寬的街道但注意它與名詞所有格形式作定語的區別。如：How far is it from your home to your school? Its about ten minutes walk. 從你家到到學校多遠?大約十分鐘路程。七)基數詞與“多少又一半”的

12、表達注意：“多少又一半”的表達有種方法：一種是“數詞+n.(單數或復數)+and a half”;另一種是“數詞+and a half +n.復數”。如：“兩個半月”可譯為：two months and a half或 two and a half months八)hundred, thousand, million等表示大約數與確切數的區別注意：基數詞表示具體數目時，hundred, thousand, million用單數形式。但在表示“數百”、“數千”、“數百萬”等不確切數目時，hundred, thousand, million要用復數形式，且后 接“of +名詞復數”。如：1. Th

13、ere are nine hundred and forty-seven students in our school. 我校有947個學生。2. Thousands of students come to visit the Museum of Natural History every year.每年有數千學生來參觀這個自然歷史博物院。九）年月日表示法月 日，年日 月 年 (the +序數詞+of +月, 年)注:年份的讀法: 日用序數詞，讀日時要加the。月用英語單詞，年用基數詞。先讀前兩位數,再讀后兩位數. 1949年10月1日 : October the first , ninete

14、en forty-nine=the first of October, nineteen forty-nine2007年3月21日-the twenty-first of March ,two thousand and seven.2000年: the year two thousand = twenty hundred2001年: twenty o one3月1日: March the first = the first of MarchA年份用基數詞表示，一般寫為阿拉伯數字，讀時可以以hundred為單位，也可以以世紀、年代為單位分別來讀。1949 讀作 nineteen hundred

15、and forty-nine 或 nineteen forty-nine1800 讀作 eighteen hundred253 讀作 two hundred and fifty-three或two fifty-three1902 讀作 nineteen hundred and two或 nineteen o two表示在哪一年，一般在年、月前加介詞in，使用year時，year放在數詞之前。日期前用on,時刻前用at.in the year two fifty-three B.C. 在公元前253年但是，通常采用in加表示年份的阿拉伯數字。B. 月份，在哪個月用介詞in加第一個字母大寫的月份詞

16、表示。例如：in May在五月； in July在七月。為了簡便起見，月份與日期連用時，月份常用縮寫形式表示。縮寫形式除May，June，July外，其它的月份都由其前三個字母表示，但September除外。JanuaryJan一月 FebruaryFeb二月MarchMar. 三月 AprilApr四月AugustAug八月SeptemberSept九月OctoberOct十月NovemberNov十一月DecemberDec十二月注：這里縮寫形式后面加點不能省略，因為它是表示縮寫形式的符號。C日期用定冠詞the加序數詞表示。在哪一天要添加介詞on。National Day is on Oc

17、t. 1.國慶節是十月一日。（讀作 October first）此句也可以表示為 National Day is on the 1st of OctoberMay 5 五月五日（讀作May fifth）也可以表示為the fifth（5th）of MayMar. 1（st） 三月一日（讀作March first或 the first of March）十）基數詞和某些單數名詞構成復合形容詞，它在句中只能做定語，但在數詞和名詞之間要用連字符，如有形容詞，也要用連字符。 A six-year-old girl a five-foot-deep hole An eight-hundred-meter

18、-long bridge A two-thousand-word report十一）表示一些數學公式時用基數詞 2+4 two plus four is (makes) six. 6-3 six minus three 5×7 five times seven 8÷2 eight divided by two等號讀equals, makes, is, is equal to 等。小數點讀point十二）倍數表達法一倍用once,兩倍用twice,三以上的倍數用timesThe room is twice as large as that one.The earth is 4

19、9times the size of the moon.十三）基數詞的句法功能基數詞在句中可作主語、賓語、定語、表語、同位語。The two happily opened the box。兩個人高興地打開了盒子。（作主語）I need three altogether我總共需要三個。（作賓語）Four students are playing volleyball outside四個學生在外面打排球。（作定語）We are sixteen我們是16個人。（作表語）They three tried to finish the task before sunset他們三個人盡力想在日落前完成任務。

20、（作同位語）二、序數詞的四個用法一)序數詞的構成及基本用法。A從第一至第十九其中，one first， two second， three third， five fifth，eighteighth，nineninth，twelve twelfth為特殊形式，其它的序數詞都是由其相對應的基數詞后面添加“th”構成。例如： six sixth、nineteen nineteenthB從第二十至第九十九整數第幾十的形式由其對應的基數詞改變結尾字母y為i，再加“eth”構成。twentytwentieth thirtythirtieth 表示第幾十幾時，用幾十的基數詞形式加上連字符“”和個位序數詞形

21、式一起表示。thirty-first 第三十一 fifty-sixth 第五十六seventy-third 第七十三 ninety-ninth 第九十九C第一百以上的多位序數詞由基數詞的形式變結尾部分為序數詞形式來表示。one hundred and twenty-first 第一百二十一one thousand，three hundred and twentieth 第一千三百二十D序數詞的縮寫形式有時，序數詞可以用縮寫形式來表示。主要縮寫形式有。firstlst second2nd third3rdfourth4th sixth6th twentieth20thtwenty-third23

22、rd其中lst，2nd，3rd為特殊形式，其它的都是阿拉伯數字后加上th。注意：序數詞一般以與之相應的基數詞后加-th 構成，少數幾個需特別記憶。為方便大家記憶，請看下面口訣。基變序，有規律，first, second, third要牢記;其它變化有公式，基數詞尾加-th;eight去t , nine去e ，ve則以f替;從twenty, thirty到ninety, 需變y為ie;若是遇到“幾十幾”，只變個位就可以。另外，注意：序數詞前要加定冠詞the, 在句中作定語放在所修飾的名詞前。如：December is the twelfth month of the year. 十二月是一年中的

23、第12個月。二)序數詞與冠詞a/an連用。注意：序數詞前加不定冠詞a/an, 表示“又一”、“再一”的意思。如：Please try it a second time. 請再試一試。Why not try a fourth time?但基數詞與more連用，并放在more前，表示“另外有”、“還有”的意思。如：Ill take one more (=another) pencil. 我還要一支鉛筆。We ve just started! There were twenty more trees to be planted!我們才剛開始呢!還有20棵樹要栽呢!三)分數的表達法。注意：分數以基數詞

24、和序數詞合成的。分子用基數表示，分母用序數詞表示，分子大于1，分母要用復數(-s)。如：1/2 二分之一 a half 1/3(三分之一) ：one third 2/3 :two thirds分子與分母之間不用連字符，含分數的短語作主語由分數后的詞決定謂語eg. 1) One third of the students are girls.2) One third of the milk is mine. 3）Three quarters (3/4) of the workers are young.分數的特殊形式：1)one third = a third2)one fourth = a q

25、uarter three fourths = three quarters3)one second = a half4)one and a half hours 四）序數詞的句法功能序數詞在句中可作主語、賓語、定語和表語。The second is what I really need第二個是我真正需要的。（作主語）He choose the second他挑選了第二個。（作賓語）We are to carry out the first plan我們將執行第一個計劃。（作定語）She is the second in our class在我們班她是第二名。（作表語）五）其他特殊用法1.數詞前

26、加every ,表示每/每隔 .every ten days =every ninth day 每十天(每隔九天)注:every +基數詞 +復數名詞 = every + (序數詞-1) +單數名詞幾個半的表達法:基數詞 + and + a half +名詞復數 = 基數詞 +名詞(單數/復數) +and +a halftwo and a half hours = two hours and a half2、序數詞前通常應有定冠詞the,除非序數詞前有了物主代詞，指示代詞或其它修飾語，以及做表語時才能省略定冠詞。3、年齡表示法：（1）、基數詞（+years old） （2）、at the ag

27、e of + 基數詞 （3）、a + 基數詞-year-old + 名詞 （4）、of + 基數詞 （+ years）When she was 11,she began to work.at the age of 14a 54-year-old mana boy of 14 (years)課 堂 檢 測數詞專題訓練【基礎題】( ) 1. There are _ days in a year. A. three hundreds sixty-five B. three hundreds and sixty-five C. three hundred and sixty-five D. three

28、 hundred and sixty five( ) 2. There are_ students in this school. A. eight hundreds and forty-six B. eight hundred and forty six C. eight hundred and forty-six D. eight hundred forty-six( ) 3. _people visit this museum every day. A. Hundred B. Hundreds C. Hundred of D. Hundreds of( ) 4. There are tw

29、o_ people in the meeting room. A. hundred B. hundreds C. hundreds of D. hundred of( ) 5. Every year _ watch NBA on TV. A. million people B. millions of people C. millions people D. million of people( ) 6. _ trees have been planted in our school in the past 10 years. A. Thousands of B. Two thousands

30、C. Thousand of D. Two thousand of( ) 7. Look! There are _ in the sky. A. thousand stars B. thousand of stars C. thousands of stars D. thousands of star( ) 8. My brother is in_. A. Three Class, One Grade B. Class Three, Grade One C. Grade One, Class Three D. class three, grade one( ) 9. We are going

31、to learn_ this term. A. book six B. six book C. the book six D. Book Six( ) 10. Please turn to_. Let's read the text aloud. A. Page Two B. the page two C. second page D. page second【提高題】I.選擇題1. There are _days in a year.A. three hundred and sixty-five B. three hundred sixty fiveC. three hundreds

32、 sixty-five D. three hundreds and sixty-five2. Oh, it's ._. Let's go to school together.A. the quarter to eight B. a quarter to eight C. seven forty-five minutes D. forty-five past seven3. School usually begins on_.A. the first of September B. the first, September C. September One D. Septemb

33、er, the first4. The Olympic Games will be held in Australia in_.A. 2,000 year B. the year 2,000 C. the 2,000 D. the year of 2,0005. I'm afraid _of the story is not so interesting.A. the part two B. second part C. the second part D. part second6. Which room are you staying in? _.A. The Room 301 B

34、. 301 Room C. Room 301st D. Room 3017. How many typewriters do you need? I need_.A. three ones B. three C. the three D. them three8. About _said that they enjoyed those books very much.A. four fifths students B. four fifth of the studentsC. four fifths of students D. four fifths of the students9. Ho

35、w much does the parcel weigh? Just a minute. I'll weigh it. It weighs_.A. one and half a kilogram B. one and a half kilogram C. one kilogram and half D. one kilogram and a half10. How soon will you finish typing the letter?_.A. one or two minute B. one minute or two C. a minute or two D. a or tw

36、o minutes11. We'll spend the summer holidays in the mountain _miles away.A. several hundreds B. hundreds of C. several hundred of D. hundred of12. He must be_. Yes, he's still strong like a young man. A. in his sixties B. in his sixty C. over sixties D. sixty-year-old13. As _customer of the

37、supermarket, Mr Li was given a nice present.A. a thousand B. the thousandth C. the thousands D. thousandth14. Three students of our class have been chosen the top students of the year. And I am one of .A. three B. the three C. third D. the third15. Have you found the six coins you lost yesterday? I

38、have found _ , but I can't find _ .A. five, the sixth B. five, six C. fifths, six D. fifth, sixth16. Next Sunday will be Jane's _.birthday.A. thirty-ninth B. thirtieth-ninth C. thirtieth-nine D. thirty-nine17. We'll have to enter the stadium at . _.A. the Gate Four B. Gate Four C. Fourth

39、 Gate D. Gate Fourth18. My _daughter likes to ask questions about anything she sees.A. six-years-old B. six years old C. six-year-old D. six-year old19. What's on . ? Sorry, I don't know. Why not look it up in TV Guide? A. Channel 20 B. 20 Channel C. Channel 20th D. 20th Channel20. The Yello

40、w River is _ longest river in China. A. two B. the two C. the second D. second21. We have two computer rooms. Still we are going to build _one.A. the third B. a third C. three D. the three22. Angel knows a lot about China as she has been to China . .A. for the fourth time B. four times C. a fourth t

41、ime D. for four times23. In the past. , Shanghai has changed a lot.A. three years B. third year C. three-year D. third-year24. A cent is of a dollar.A. the hundredth B. one hundredth C. a hundred D. the hundred25. To my surprise, the machine was invented by a high school student of_.A. fifteen-year-

42、old B. fifteen C. fifteen-year age D. age of fifteen26._is not always_ best.A. Fist, the B. A first, a C. The first, the D. First, /27. The store sells_ dresses a month.A. several thousand B. several thousands C. several of thousand D. several thousand28. Over _pounds have been raised for the poor children there.A. four million B. four million of C. four millions D. four millions of29. What work are you going to give _?A. us two B. two us C. the two us D. the us two30. She received a video camera for her _ birthday.A. fourteen B. the fourteenth C. fourteenth D. fou