專項復習數詞

基數詞和序數詞專項復習數詞

基數詞和序數詞1學習目標

1.知識目標：掌握基數詞和序數詞2.技能目標：學會運用基數詞和序數詞3.情感目標：讓學生在日常生活中多使用數詞學習目標2復習案數詞就是表示事物的數量和順序的詞,分為基數詞和序數詞兩種。數詞基數詞序數詞表示事物的數量表示事物的順序復習案數詞基數詞序數詞表示事物的數量表示3一.基數詞一.基數詞4(1)1-12分別由從one到twelve12個各不相同的詞表示。0zero1one2two3three

4four5five6six7seven8eight9nine10ten11eleven12twelve基數詞構成方法如下：(1)1-12分別由從one到twelve12個各不相同的詞513thirteen14fourteen

15fifteen16sixteen17seventeen18eighteen

19nineteen(2)13-19均以后綴-teen結尾。13thirteen14fourteen620twenty30thirty40forty

50fifty60sixty70seventy

80eighty90ninety

(3)20-90的整十數詞均以后綴-ty結尾。表示“幾十幾”時,個位和十位之間需加連詞符,如:twenty-one,thirty-two,forty-three.20twenty30thirty40f7(4)三位數數詞:

百位和十位(若無十位則和個位)之間用and連接,十位和個位間用“-”連接。

156onehundredandfifty-six;

810eighthundredandten

204twohundredandfour;(4)三位數數詞:

百位和十位(若無十位則和個位)之間用an8小小練兵場（搶答）拼出下列基數詞。8——50——12——64——20——87——35——42——99——78——eighttwelvetwentythirty-fiveninety-ninefiftysixty-foureight-sevenforty-twoseven-eight小小練兵場（搶答）拼出下列基數詞。eighttwelvetw9探究案小組討論基數詞的用法：1.表示人，物的數量。基數詞放在名詞前。Fiveapples2.表示年齡，基數詞放year(s)old前.Twoyearsold.3.用于計算。Whatistwoandthree?Itisfive.4.表示順序，編號等。一般放在名詞后。LessonOne.5.用來表示時間。Atthreefifteen

6.表示年代in1998探究案小組討論基數詞的用法：1.表示人，物的數量。基數詞放在10快樂練兵場1.Hehas

(6)balls.2.Sheis

(9)yearsold.

3.TomisinClass

(4)4.Itisabout

(12)o’clock5.11

and_____19is____

30

sixnine

Fourtwelveelevennineteenthirty快樂練兵場1.Hehas(6)balls11二.序數詞二.序數詞12onetwothreefourfivesixseveneightninetenfirstsecondthird

fourthfifth

sixth

seventh

eighth

ninth

tenth

1st2nd3rd4th5th6th7th8th9th

10th

eleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwentyeleventhtwelfth

thirteenth

fourteenth

fifteenth

sixteenth

seventeenth

eighteenth

nineteenth

twentieth11th12th13th14th15th16th17th18th19th20th基數詞CardinalNumbers序數詞OrdinalNumbersonetwothreefourfivesixse13twenty-onetwenty-twotwenty-threethirtyfortyfiftysixtyseventyeightyninetyhundredtwenty-first

twenty-second

twenty-third

thirtieth

fortieth

fiftieth

sixtieth

seventieth

eightieth

ninetieth

hundredth

21st22nd23rd

30th40th

50th60th70th80th90th100th基數詞序數詞twenty-onetwenty-twotwenty-t14基變序規律【記憶口訣】基變序，容易記，一般在基數詞詞尾加-th。一、二、三特殊記，（one→first第一two→second第二；three→third第三）八去t,，九去e,ve要用f替，然后再加-th。（特殊：five→fifth第五；eight→eighth第八；nine→ninth第九twelve→twelfth第十二）整十變化需注意，把y變i加eth.若是遇到幾十幾，只變個位就可以。序數詞表順序，一般須加定冠詞the。

基變序規律【記憶口訣】1520,3040,50,60,70,80,90-ty變為-tie再加thtwenty→twentieth第二十thirty→thirtieth第三十forty→fortieth第四十fifty→fiftieth第五十sixty→sixtieth第六十seventy→seventieth第七十eighty→eightieth第八十ninety→ninetieth第九十其余兩位數將相應基數詞的個位改為基數詞twenty-one→twenty-first第二十一；thirty-nine→thirty-ninth第三十九；forty-six→forty-sixth第四十六twenty→twentieth第二十其余兩位數將相應16小小練兵場（搶答）拼出下列序數詞。9____3___12___2___20___8___55___43___69___91___ninthtwelfthtwentiethfifty-fifthsixty-ninththirdsecondeighthforty-thirdninety-first小小練兵場（搶答）拼出下列序數詞。ninthtwelftht17探究案小組討論序數詞的用法：1.表示日期。Octoberthefirst2.表示某人第多少歲的生日。

hisfiftiethbirthday.3.表示事物的順序，編號。thefirstlesson.探究案小組討論序數詞的用法：18小小練兵場（搶答）1.Mondayisthe______(2)dayoftheweek.Wemustgotoschool.2.The______(12)monthofayearisDecember.3.The_______(24)lessonisveryeasyforme.4.Myfather’sbirthdayisonDecember_______(20)secondtwelfthtwenty-fourthtwentieth小小練兵場（搶答）1.Mondayisthe_____19當堂檢測（基序混合）選擇The____monthoftheyearisFebruary

A.oneB.firstC.twoD.second2.Decemberisthe_____monthoftheyear.

A.twelveB.twelvethC.twelviethD.twelfthDDD當堂檢測（基序混合）選擇DDD20

3.PleaseturntoPage

andlookat

thepicture.A.Fifth,fiveB.Five,fifthC.Fifth,fifthD.Five,five

B4.Thereare

secondsinaminuteA.fourtyB.fortyC.sixteenD.sixtyD3.PleaseturntoPage