初中數(shù)詞教案

1、學(xué)科：英語任課教師：李悅授課時(shí)間：2016年3月11日 星期五數(shù)詞的講解與專練 知識(shí)目標(biāo)：理解數(shù)詞概念及用法能力目標(biāo)：掌握常見數(shù)詞的表達(dá)法情感目標(biāo)：培養(yǎng)學(xué)生生活中時(shí)時(shí)處處用數(shù)詞自然性，習(xí)慣性重點(diǎn)：基數(shù)詞，序數(shù)詞，分?jǐn)?shù)難點(diǎn)：基數(shù)詞*$化為序數(shù)詞，分?jǐn)?shù)的構(gòu)成 教學(xué)方法：對比，歸納演繹，游戲，多媒體呈現(xiàn)九（十）班共有學(xué)生30人，從整體來說，這班學(xué)生的學(xué)習(xí)積極性還是比較差的， 與上一學(xué)年比較學(xué)習(xí)風(fēng)氣有了明顯的好轉(zhuǎn)， 學(xué)習(xí)的興趣濃了，學(xué)習(xí)的主動(dòng)性增強(qiáng)了 但整體現(xiàn)象比較嚴(yán)重，學(xué)生們的綜合實(shí)力不太強(qiáng)。本節(jié)課主要是針對數(shù)詞進(jìn)行教學(xué)，首先引導(dǎo)學(xué)生深入課題 -數(shù)詞，然后通過問答, 舉例使學(xué)生理解數(shù)詞概念及其用法，

2、并引導(dǎo)學(xué)生總結(jié)基數(shù)詞變序數(shù)詞的規(guī)律，接下設(shè) 計(jì) 來通過習(xí)題練習(xí)掌握，最后通過互動(dòng)游戲提高學(xué)生學(xué)習(xí)數(shù)詞的積極性，在課堂將要結(jié)束時(shí)發(fā)給練習(xí)習(xí)題。學(xué) 法 教師通過媒體呈現(xiàn)引導(dǎo)學(xué)生上板默寫，組織討論，認(rèn)識(shí)規(guī)律，掌握學(xué)習(xí)新知識(shí)的方 設(shè) 計(jì) 法和途徑，最后通過練習(xí)掌握所學(xué)內(nèi)容。針對性授課數(shù)詞講解數(shù)詞分為基數(shù)詞和序數(shù)詞兩種，一、基數(shù)詞的十個(gè)用法一)基數(shù)詞的讀法。1)1-10 : one two three four five six seven eight nine ten2)11-19: 詞 尾力口-teen :thirteen fourteen fifteen sixteen seventeen eig

3、hteen 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(gè)位之間加連字符構(gòu)成.21- twenty-one 99-ninety-nine5)101-999 :百位數(shù)與十位數(shù)之間要加 and ,再加末尾兩位數(shù)或個(gè)位數(shù).101-one hundred and one

4、238-two hundred and thirty-eight320 three hundred and twenty6)1000以上的數(shù)：先將數(shù)字從右往左數(shù)，每三位數(shù)用一個(gè)逗號(hào)隔開，從右往左第一個(gè)逗號(hào)表 示“千”讀thousand第二個(gè)逗號(hào)表示“百萬”讀 million第三個(gè)逗號(hào)表示“十億”讀billion 且hundred, thousand, million 等用單數(shù)形式。注意，百位數(shù)hundred與十位數(shù)(或 個(gè)位數(shù))之間要用and連接。十位數(shù)與個(gè)位數(shù)之間要用連字符號(hào)“-"，如：52, 368 讀作：fifty-two thousand, three hundred and

5、 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 million , one hundred

6、 and sixty-six thousand , two hundred and thirty-four注意：基數(shù)詞表計(jì)量大于1時(shí)，它所修飾的名詞要用復(fù)數(shù)形式。 如：two bottles of water （兩瓶水）；three boxes of apples（ 三箱蘋果）。三）基數(shù)詞表番號(hào)（編號(hào)）注意：編號(hào)的事物如果數(shù)字較大，一般用基數(shù)詞表達(dá)，且放在編號(hào)的事物名詞之后。如：Middle School （102中學(xué)）;Room 206 （206 房間）第 207 房間：Room 207如果編號(hào)的事物數(shù)字不大，也可用序數(shù)詞表達(dá)，但它應(yīng)放在編號(hào)名詞之前。如：the firstlesson （

7、第一課） 第五課： Lesson 5 = the fifth lesson四）基數(shù)詞表時(shí)刻注意：英語時(shí)刻表達(dá)法有兩種：一種是直接讀數(shù)字，整點(diǎn)：基數(shù)詞+ o ' clock （可以省略o' clock ）幾點(diǎn)幾分：直接表達(dá)法：先說鐘點(diǎn)數(shù)，后說分鐘數(shù)間接表達(dá)法：先說分鐘數(shù)，后說鐘點(diǎn)數(shù)，中間要用 past或to連接。即：130分 鐘（含30分鐘）用“分鐘數(shù)+past+鐘點(diǎn)數(shù)” ；3159分鐘用“ （60-分鐘數(shù)）+to +下一個(gè)鐘點(diǎn) 數(shù)”。如：4:20 four twenty 或 twenty past four 3:25 twenty-five (minutes) past thr

8、ee5:45 five forty-five或 fifteen to six或 a quarter to six3:35 twenty-five （minutes） to four以小時(shí)、分鐘為單位分別讀出數(shù)字。6:31 讀作 six thirty-one 14:03 讀作 fourteen o three 18:30 讀作 eighteen thirty10:2616:1523:55讀作 ten twenty-six讀作 sixteen fifteen讀作 twenty-three fifty-five注：時(shí)刻表上的時(shí)間大多采用24小時(shí)表示法，這樣就不需要用.表示上午，.表示下午了。 五）基

9、數(shù)詞復(fù)數(shù)表歲數(shù)或年代注意：表示“幾十”的基數(shù)詞的復(fù)數(shù)形式，可用來表示某人的大概歲數(shù)或年代。世紀(jì)可以用定冠詞加序數(shù)詞加世紀(jì)century表示，也可以用定冠詞加百位進(jìn)數(shù)加s表示the sixth （6th） century 公元六世紀(jì)the eighteenth （18th） century 公元十八世紀(jì)the 1900s二十世紀(jì)the 1600s十七世紀(jì)這里，用百位數(shù)整數(shù)表示的世紀(jì)比這一百位阿拉伯?dāng)?shù)字本身多一個(gè)世紀(jì)。年代用定冠詞及基數(shù)詞表示的世紀(jì)加十位整數(shù)的復(fù)數(shù)形式構(gòu)成in the 1930s（in the thirties of the twentieth century 或 in the n

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

11、ientists in the 1920s.這些恐龍蛋是20世紀(jì)20年代由一群科學(xué)家在戈壁沙漠發(fā)現(xiàn)的。六）含基數(shù)詞的復(fù)合形容詞注意：“基數(shù)詞+名詞（+形容詞）”構(gòu)成的復(fù)合形容詞作定語時(shí)，其中的名詞用單數(shù)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(qū)別。如：Howfar is it from your home to yourschool? Its about ten minutes ' walk.從你家到到學(xué)校多遠(yuǎn) 達(dá)約十分鐘路程。七）基數(shù)詞與“多少又一半”的表達(dá)注

12、意：“多少又一半”的表達(dá)有種方法：一種是“數(shù)詞 +n.（單數(shù)或復(fù)數(shù)）+and a half ” ； 另一種是“數(shù)詞+and a half +n. 復(fù)數(shù)”。如：“兩個(gè)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(shù)與確切數(shù)的區(qū)別注意：基數(shù)詞表示具體數(shù)目時(shí)，hundred, thousand, million 用單數(shù)形式。但在表示“數(shù) 百”、“數(shù)千”、“數(shù)百萬”等不確切數(shù)目時(shí)，hundred, thousand, million 要用復(fù)數(shù)形式，且后接“of +名詞復(fù)數(shù)”。如：

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

14、een 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(shù)詞表示，一般寫為阿拉伯?dāng)?shù)字，讀時(shí)可以以hundred為單位，也可以以世紀(jì)、年代為單位分別來讀。1949 讀作 ninetee

15、n hundred 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(shí)，year放在數(shù)詞之前。日期前用on,時(shí)刻前用at.in the year two fifty-three .在公元前 253 年但是，通常采用in加表示年份的阿拉伯?dāng)?shù)字。B.月份，在哪個(gè)月用介詞in加

16、第一個(gè)字母大寫的月份詞表示。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(shí)，月份常用縮寫形式表示?？s寫形式除May,June, July外，其它的月份都由其前三個(gè)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Novembe-Nov. HDecembe-Dec.十二月注：這里縮寫形式后面加點(diǎn)不能省略，因?yàn)樗潜硎究s寫形式的符號(hào)。C.日期用定冠詞the加序數(shù)詞表示。在哪一天要添加介詞on。

17、National Day is on Oct. 1.國慶節(jié)是十月一日。（讀作 October first ）此句也可以表示為 National Day is on the 1st of October .May 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(shù)詞和某些單數(shù)名詞構(gòu)成復(fù)合形容詞，它在句中只能做定語，但在數(shù)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-d

18、eep holeAn eight-hundred-meter-long bridgeA two-thousand-word report十一）表示一些數(shù)學(xué)公式時(shí)用基數(shù)詞2+4 two plus four is （makes） six.6-3 six minus three5 x 7 five times seven8+2 eight divided by two等號(hào)讀 equals, makes, is, is equal to 等。小數(shù)點(diǎn)讀 point 十二）倍數(shù)表達(dá)法一倍用once,兩倍用twice,三以上的倍數(shù)用timesThe room is twice as large as tha

19、t one.The earth is 49times the size of the moon.十三）基數(shù)詞的句法功能基數(shù)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(gè)人高興地打開了盒子。（作主語）I need three altogether .我總共需要三個(gè)。（作賓語）Four students are playing volleyball outside.四個(gè)學(xué)生在外面打排球。（作定語）We are sixteen .我們是16個(gè)人。（作表語）They three tried to finish the task befo

20、re sunset他們?nèi)齻€(gè)人盡力想在日落前完成任務(wù)。（作同位語）二、序數(shù)詞的四個(gè)用法一）序數(shù)詞的構(gòu)成及基本用法。A.從第一至第十九其中，one first, two second , three third , five fifth , eight eighth ,nine ninth , twelve twelfth為特殊形式，其它的序數(shù)詞都是由其相對應(yīng)的基數(shù)詞后面添加 “th” 構(gòu)成。例如： six sixth 、nineteen nineteenth .B.從第二十至第九十九整數(shù)第幾十的形式由其對應(yīng)的基數(shù)詞改變結(jié)尾字母y為i ,再加“eth”構(gòu)成。twenty 上連字符twentieth

21、 thirtythirtieth“”和個(gè)位序數(shù)詞形式一起表示。表示第幾十幾時(shí)，用幾十的基數(shù)詞形式加fifty-sixth ninety-ninth第五十六第九十九thirty-first第三 H一seventy-third第七十三C.第一百以上的多位序數(shù)詞由基數(shù)詞的形式變結(jié)尾部分為序數(shù)詞形式來表示。one hundred and twenty-first第一百二 Hone thousand , three hundred and twentieth 第一千三百二十D.序數(shù)詞的縮寫形式有時(shí)，序數(shù)詞可以用縮寫形式來表示。主要縮寫形式有first1st second2nd third 3rdfour

22、th4th sixth6thtwentieth 20thtwenty-third23rd其中l(wèi)st , 2nd, 3rd為特殊形式，其它的都是阿拉伯?dāng)?shù)字后加上th。注意：序數(shù)詞一般以與之相應(yīng)的基數(shù)詞后加-th構(gòu)成，少數(shù)幾個(gè)需特別記憶。為方便大家記憶，請看下面口訣?；冃颍幸?guī)律，first, second, third要牢記；其它變化有公式，基數(shù)詞尾加-th;eight 去 t , nine 去 e , ve 貝以 f 替；從 twenty, thirty至U ninety, 需變 y 為 ie;若是遇到“幾十幾”，只變個(gè)位就可以。另外，注意：序數(shù)詞前要加定冠詞the,在句中作定語放在所修飾的

23、名詞前。如：December is the twelfth month of the year.十二月是一年中的第 12 個(gè)月。二）序數(shù)詞與冠詞a/an連用。注意：序數(shù)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?jiān)僭囋?。Why not try a fourth time?但基數(shù)詞與more連用，并放在more前，表示“另外有"、“還有”的意思。如：I ' ll take one more （=another） pencil.我還要一支鉛筆。 We ' ve just started! There

24、were twenty more trees to be planted!我們才剛開始呢！還有20棵樹要栽呢！三）分?jǐn)?shù)的表達(dá)法。注意：分?jǐn)?shù)以基數(shù)詞和序數(shù)詞合成的。分子用基數(shù)表示，分母用序數(shù)詞表示，分子大于1,分母要用復(fù)數(shù)（-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?jǐn)?shù)的短語作主語由分?jǐn)?shù)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 （

25、3/4） of the workers are young.分?jǐn)?shù)的特殊形式：1）one third = a third2）one fourth = a quarter three fourths = three quarters3）one second = a half4）one and a half hours四）序數(shù)詞的句法功能序數(shù)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(gè)是我真正需要的。（作主語）He choose the second .他挑選了第二個(gè)。（作賓語）We are to carry out the firs

26、t plan.我們將執(zhí)行第一個(gè)計(jì)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(shù)詞前加every ,表示每/每隔every ten days =every ninth day 每十天（每隔九天）注:every +基數(shù)詞+復(fù)數(shù)名詞=every + （ 序數(shù)詞-1） +單數(shù)名詞幾個(gè)半的表達(dá)法：基數(shù)詞+ and + a half + 名詞復(fù)數(shù)=基數(shù)詞+名詞（單數(shù)/復(fù)數(shù)）+and +a halftwo and a half hours = two hours and a half2、序數(shù)詞前通常應(yīng)有定冠詞the,除非序數(shù)

27、詞前有了物主代詞，指示代詞或其它修飾語，以及做表語時(shí)才能省略定冠詞。3、年齡表示法：(1)、基數(shù)詞(+years old )(2)、at the age of + 基數(shù)詞(3)、a + 基數(shù)詞-year-old + 名詞(4)、of + 基數(shù)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(shù)詞專題訓(xùn)練【基礎(chǔ)題】()1. There are days in a year.A. three hundreds sixty-five B. thre

28、e hundreds and sixty-fiveC. three hundred and sixty-five D. three hundred and sixty five()2. There are students in this school.A. eight hundreds and forty-six B. eight hundred and forty sixC. eight hundred and forty-six D. eight hundred forty-six()3.people visit this museum every day.A. Hundred B. H

29、undreds C. Hundred of D. Hundreds of()4. There are two 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 peopleC. millions people D. million of people()6.trees have been planted in our school in the past 10

30、years.A. Thousands of B. Two thousandsC. Thousand of D. Two thousand of()7. Look! There are in the sky.A. thousand stars B. thousand of starsC. thousands of stars D. thousands of star()8. My brother is in.A. Three Class, One Grade B. Class Three, Grade OneC. Grade One, Class Three D. class three, gr

31、ade one()9. We are going 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 fiv

32、eC. three hundreds 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

33、 One D. September, 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. 一 Which room are you staying in? .A.

34、The Room 301 B. 301 Room C. Room 301st D. Room 3017. 一 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

35、 students9. 一 How much does the parcel weigh? Just a minute. I'll weigh it. It weighs.A. one and half a kilogramB. one and a half kilogramC. one kilogram and halfD. one kilogram and a half10. 一 How soon will you finish typing the letter?A. one or two minute B. one minute or two C. a minute or tw

36、o D. a or two 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. 一 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 custom

37、er of the 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 oneof .A. three B. the three C. third D. the third15. 一 Have you found the six coins you lost ye

38、sterday?-I have found, but I can't find . A. five, the sixth B. five, six C. fifths, sixD. fifth, sixth16. Next Sunday will be Jane's .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 Gate

39、 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. 一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 Channel 20. The Yellow River

40、 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 ChinaA. for the fourth time B. four times C. a fourth time D. for fo

41、ur times23. In the past, Shanghai has changed a lot.A. three years B. third year C. three-year D. third-year 24. 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-old B. fifteen

42、C. fifteen-year age D. age of fifteen 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 of 29. 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.