1、學(xué)習(xí)必備歡迎下載一、基數(shù)詞卜面把100以內(nèi)的基數(shù)詞分為四類1、第一類：one - two 二 three 三 four 四 five 五 six 六 seven 七 eight nine 九ten 十eleven H- twelve 十二這一類共計(jì)十二個(gè)單詞，在結(jié)構(gòu)上與其他的基數(shù)詞相比較是特殊的，就象不規(guī)則的動(dòng)詞一樣，要求逐個(gè) 的硬背下來(lái)，這對(duì)學(xué)好其他的基數(shù)詞和序數(shù)詞都是及其重要的。2、第二類:thirteen 十三 fourteen 十四 fifteen 十五 sixteen 十六 seventeen 十七eighteen 十八 nineteen 十九這一類基數(shù)詞共有七個(gè)。它們?cè)诮Y(jié)構(gòu)上有兩個(gè)

2、特點(diǎn)：一是在發(fā)音方面都有兩個(gè)重音；二是在拼法上都有后綴一teen。除了 thirteen 和fifteen 之外，都是純粹地在另一個(gè)基數(shù)詞的后面加上后綴一teen。但要注意eighteen的拼法，eight本身有t字母，因此只加一een。3、第三類：twenty 二十 thirty 三十 forty 四十 fifty 五十 sixty 六十 seventy 七十 eighty/I 十 ninety 九十這類基數(shù)詞共有八個(gè)。都是十位的整數(shù)，均以后綴一ty結(jié)尾。其中sixty、seventy > eighty、ninety基本上是在相應(yīng)的基數(shù)詞后面加上后綴一ty o但要注意eighty的拼法

3、，eight本身有t字母，因此只加一 y °4、第四類：這一類和很簡(jiǎn)單，可以看成是一種合成詞。其結(jié)構(gòu)方式是：用十位整數(shù)加上個(gè)位整數(shù)，其間用連字符號(hào)“”連接，表示“幾十幾”。這類基數(shù)詞的變化都是規(guī)則的。如：twenty-one二 H- forty-six四十六seventy-eight 七十八 ninety-five 九十五二、序數(shù)詞下面把199的序數(shù)詞也分為四個(gè)類。1、第一類first (1st) 第一second (2nd) 第二third (3rd)第三(在括號(hào)里的是縮寫形式，均在阿拉伯?dāng)?shù)字后面加上相應(yīng)序數(shù)詞的最后兩個(gè)字母構(gòu)成，以下各類與 此相同。)這類序數(shù)詞只有三個(gè)，在整個(gè)序數(shù)

4、詞里面是特殊的，就和第一類基數(shù)詞一樣，需要逐個(gè) 地硬記下來(lái)。2、2、第二類:fourth (4th)第四 fifth (5th)第五sixth (6th)第六 seventh (7th)第七eighth(8th)第八ninth(9th)第九tenth(10th)第十eleventh (11th) 第 H一(15th) 第十五(17th) 第十七(19th) 第十九twelfth (12th)第十二 thirteenth (13th)第十三fourteenth(14th)第十四fifteenthsixteenth (16th) 第十六 seventeentheighteenth(18th)第十八

5、 nineteenth這一類序數(shù)詞共有十六個(gè)。均在相應(yīng)的基數(shù)詞后面加上后綴th構(gòu)成。要注意其中fifth > eighth >ninth、twelth四個(gè)詞的拼法3、第三類: twentieth fortiethsixtieth eightieth 這一類全是(20th)(40th)(60th)(80th)第二十 第四十 第六十第八十卜位整數(shù)的序數(shù)詞,thirtieth fiftiethseventieth ninetieth共八個(gè)。(30th)(50th)(70th)(90th)第三十第五十第七十第九十它們的構(gòu)成方法是：先將相應(yīng)的十位整數(shù)的基數(shù)詞詞尾一ty中的y改成i ,然后在加

6、上后綴eth 4、第四類：thirty-first (31th)第三 H一sixty-second (62nd)第六十二eighty-seventh (87th)第八十七 ninety-eighth (98th)第九十八這類表示“第幾十幾”的序數(shù)詞，跟表示“幾十幾”的基數(shù)詞一樣簡(jiǎn)單。在構(gòu)成方法上均由基數(shù)詞“幾 十幾”變化而來(lái)，十位數(shù)不變，僅把個(gè)位上的基數(shù)詞變成序數(shù)詞就行了。基數(shù)詞及序數(shù)詞重要用法1 .基數(shù)詞的用法基數(shù)詞用于表示事物的數(shù)量，在表示基數(shù)詞時(shí)，要特別注意 hundred, thousand, million, billion 等幾個(gè)詞的用法：若其前用了基數(shù)詞，則不論其面是否有of,都

7、必須用單數(shù)形式(此時(shí)若帶of則通常表示特定范圍中的一部分)；若泛指數(shù)百、數(shù)千、數(shù)百萬(wàn)等，則用 hundreds of, thousands of, millions of等這樣的結(jié)構(gòu)。如：Two hundred of the students are needed to plant trees this morning.今天中午需要200個(gè)學(xué)生去植樹(shù)。Hundreds of people attended the f amous director ' s farewell concert.好幾百人出席了這位著名指揮家的告別音樂(lè)會(huì)。Thousands upon thousands of

8、English words come from foreign tongues.成千上萬(wàn)英語(yǔ)單詞來(lái)自外來(lái)語(yǔ)。2 .基數(shù)詞的復(fù)數(shù)用法逢整“十”的基數(shù)詞的復(fù)數(shù)形式可用于表示某人的大約年歲和世紀(jì)中的年代。如：The war broke out in the nineties.這次戰(zhàn)爭(zhēng)爆發(fā)于 90 年代。Karl Mark began to learn the Russian language in his fiftieth.馬克思五十多歲開(kāi)始學(xué)俄語(yǔ)。3 .序數(shù)詞的用法序數(shù)詞用于表示事物的順序，一般由與之相應(yīng)的基數(shù)詞加th構(gòu)成(但有特殊形式需特別記憶)；序數(shù)詞主要用作定語(yǔ)，前面一般要加定冠詞(或物主代

9、詞)。如：Their second son is a doctor.他們的二兒子是個(gè)博士。The hundredth cave that George has discovered in his lifetime is near the Alps.學(xué)習(xí)必備歡迎下載喬治一生中找到的第一百個(gè)山洞在阿爾卑斯山附近。注：序數(shù)詞前有時(shí)可用不定冠詞，表示“每一，又一”。如：We ll have to do it a second time.我們將再做一遍。基變序口訣基變序，有規(guī)律詞尾加上-ed(fourth,sixth)一、二、三，特殊記， 結(jié)尾字母t,d,d(first,second,third)八去

10、t,九去 e,(eighth,ninth)ve 要用 f 替;fifth,twelfth)ty將y改成i, th前面有個(gè)e若是碰到幾十幾，只變個(gè)位就可以基數(shù)詞和序數(shù)詞的練習(xí)題6.twelve一、：寫出下列詞的序數(shù)詞1.one2.two3. six 4.five 5. nine7.eight8.twenty-one二、寫出下列單詞的基數(shù)詞1.third 2.fourth 3.tenth 4.twentieth 5.nineteenth 6.thirty-first I. Children ' s Day （兒童節(jié)）is on the of June （六月）2. There are mo

11、nths （月）in a year（年）.3. Teacher s Dy（教師節(jié)）is on the of Septembe（AM）4. Three plus（力口） six is .I（）1.My cousin' s birthday in on the of October.A.（three）2.B. firstC. the secondWhat date is it today? It ' s of April（A.twelfthB. the 12thC. 12th）3. There aredays in a week.A. the seven B. seventh C.

12、 the seventh D. seven（ ）4.Sunday is the day of a week.A. oneB. firstC. second（）5. Twenty-eightminus（減）sixis .A. the twenty- second B. twenty-two C. twenty- second（）6. Four plus（力口）is twelve.A. sevenB. eightC. nine新目標(biāo)基數(shù)詞序數(shù)詞練習(xí)題Name No.學(xué)習(xí)必備歡迎下載I.選擇題()1. Please turn to.A. Page 11 B. the 11st page C. pag

13、e 11 D. page the 11 th()2. At night we can see stars in the sky.A. thousands and thousands of B. thousand and thousands ofC. a thousand and thousands D. thousand and thousand()3. There are some in our classroom.A. hundred of booksB. the hundreds of booksC. hundreds of booksD. hundred of book()4. I h

14、ave been to the village. A. a hundred timeB. hundred times C. hundreds of times D. hundred of times ()5. There are students in our school.A. four hundred and fortyfiveB. four hundred and forty fiveC. four hundreds and fortylessons. A. thirst threefiveD. four hundred and forty five()6. The teacher to

15、ld me to go overB. the three first C. three the first D. the first three()7. May is of a year.A. the fifth monthsB. the fifth month C. the five months D. the five month ()8. We live in.A. the twenty-first century B. the century twenty-oneC. century twenty-oneD. the century twenty-first()9. He said h

16、e was going to be free in.A. one and a half hourB. one hour and halfC. one and half hoursD. an hour and a half ()10. -How many English books are there on the table?-There is only English book on it.A. a B. an C. one D. the()11. Mr Smith stayed in last night.A. Room 403 B. the Room 403 C. the 403 roo

17、m D. 403 the room()12. The road is.A. two thousand and five hundred metres long B. two thousands metres longC. long one thousand five hundred metreD. a thousand and five hundreds metres long()13. He joined the army on of May 1980.A. 1 st B. the 1 C. first D. the first()14. Is Sunday the day of the w

18、eek?A. a B. one C. once D. first()15. March the is Women ' s Day.A. eighth B. ninth C. tenth D. eight()16. September is the month of the year.A. nineth B. ninth C. nine D. the twelveth()17. December the is Christmas.A. twenty-fiveB. twenty-fifthC. twentieth-five D. twenty-five()18. Another way of saying Lesson 12 is.A. Lesson ten-two B. Lesson Ten-secondC. the Twelfth Lesson D. Twelfth lessonII. 完成句子（用past或to的句型）ItIt年1月226日)1. What time is