八年級(jí)英語(yǔ)上冊(cè)Unit2Numbersgrammar課件 牛津深圳版

八年級(jí)英語(yǔ)上冊(cè)Unit2Numbersgrammar課件牛津深圳版Lead-in:answerquestions.1Howoldareyou？I'm13yearsold.2What'syourtelephonenumber?Mytelephonenumberis27227854.3Howmanystudentsinyourclass?Howmanystudentsinyourgrade?Thereare52studentsinmyclassandabout310studentsinourgrade.4Inwhichyearwereyouborn?In1999/2000/2001.以上的數(shù)字都是基數(shù)詞（cardinalnumbers）.A.Doyouknow!Cardinalnumbers12345678171819201112131415169103040528598onetwothreefourfivesixseveneightnineteneleventwelevethirteenfourteenfifteensixteenseventeeneighteennineteentwentythirtyfortyfifty-twoeighty-fiveninety-eight基數(shù)詞的構(gòu)成1）1－12,獨(dú)立成詞。onetwothreefourfivesixseveneightnineteneleventwelve2）13--19,由3－9+teen構(gòu)成。14–fourteen16--sixteen17--seventeen19—nineteen特殊拼寫(xiě):13–thirteen15--fifteen18—eighteen

3）20－90,以-ty結(jié)尾。20—twenty30---thirty40—forty50—fifty80---eighty60---sixty70---seventy90—ninety

4）21－99，兩位數(shù)，十位與個(gè)位之間有“－”。21twenty—one55fifty—five99ninety—nine

Let’splayagame：報(bào)數(shù)Saynumbersonebyoneaccordingtotheseatorder.按照座位順序一個(gè)接一個(gè)報(bào)數(shù)。報(bào)錯(cuò)數(shù)的同學(xué)站著，并要在小組得分上扣一分。100375200onehundredtwohundredthreehundredandseventy-five642958236sixhundredandforty-twoninehundredandfifty-eighttwohundredandthirty-six5）101—999，三位數(shù)，百位與十位/個(gè)位之間加and。101onehundredandone840eighthundredandforty693sixhundredandninety-three29,43150076,,thousandhundredmillionbillionand6)1，000以上數(shù)目,從右向左每三位用“，”分開(kāi),分別讀為thousand,million,billion基數(shù)詞的構(gòu)成Readthefollowingnumbers.2,53425,342253,4232,534,233twothousandfivehundredandthirty-fourtwenty-fivethousandthreehundredandforty-twotwohundredandfifty-threethousandfourhundredandtwenty-threetwomillionfivehundredandthirty-fourthousandtwohundredandthirty-three534fivehundredandthirty-four2,250,342,330twobilliontwohundredandfiftymillionthreehundredandforty-twothousandthreehundredandthirtyA.let'sreadit.100015，3624,189onethousandfourthousandonehundredandeighty-ninefifteenthousandthreehundredandsixty-two100，000285，643onehundredthousandtwohundredandfifty-eightthousandsixhundredandforty-threeA.Cardinalandordinalnumbers1,000,0003,367,982onemillionthreemillionthreehundredandsixty-seventhousandninehundredandeighty-twoWorkouttheruleInthecardinalnumbers,wedonotadd-stohundred,________and________.Withlargenumbers,weput________betweenhundredandten.thousandmillionand注意：表示具體、準(zhǔn)確的數(shù)目時(shí)，hundred,thousand,million等數(shù)詞后不能加-s,如fivehundred,sixthousand,sevenmillion等。

當(dāng)hundred,thousand等數(shù)詞與of連用，表示不具體、不準(zhǔn)確的數(shù)目時(shí)，詞尾須加-s。如：

thousandsofstudents,millionsoftrees.1、“幾十”的復(fù)數(shù)形式可以表示：

幾十多歲----in+one’s+數(shù)詞復(fù)數(shù)年代----in+the+數(shù)詞復(fù)數(shù)1)Hediedinhisforties．四十多歲

2)Inthenineties,mostpeoplegotoworkbybike.90年代2、“基數(shù)詞+名詞”的合成形容詞作定語(yǔ)，中間有連字符“－”,當(dāng)中的名詞用單數(shù)。a3–year–oldgirlaseven-dayholiday

3、表計(jì)量--“基數(shù)詞+度量單位+形容詞”Theclassroomis7meterslong,6meterswideand3metershigh.基數(shù)詞的用法A.Cardinalandordinalnumbers1st2nd3rd4th5th6th7th8th17th18th19th20th11th12th13th14th15th16th9th10th21st33rd40th100thfirstsecondthirdfourthfifthsixthseventheighthninthtentheleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwentiethtwenty-firstthirty-thirdfortietyhundredth序數(shù)詞的構(gòu)成1)1－3,first,second,third。2)4－19,相應(yīng)基數(shù)詞+th,特殊拼寫(xiě):fifth,eighth,ninth,twelfth。3)20－90,y變成ie+th,如twentieth。4)21－99,只把個(gè)位的基數(shù)詞變成序數(shù)詞如twenty-first。5)序數(shù)詞縮寫(xiě)----數(shù)字＋最后兩字母

如1st,2nd,3rd,4th…基變序,有規(guī)律,一、二、三，特殊記，面目全非要注意，加th從4起，八少“t”，九去“e”，“ve”要用“f”替，(five,twelve)見(jiàn)“y”變成“i”和“e”，詞尾加上“th”，(twenty,thirty,……ninety)若是遇到幾十幾，只變個(gè)位就可以。序數(shù)詞縮寫(xiě)記清楚,數(shù)字后跟兩字母。(序數(shù)詞構(gòu)成規(guī)律)WorkouttheruleWeformmostordinalnumbersbyadding_______tothecardinalnumbers.Thereareexceptions,likefirst,secondandthird.thPracticemakesperfect!1(2)____3412(6)____2328MayAlanDannyJanePeterAliceSteveZoeMayisthe(1)_______.Alanisthesecond.Dannyisthe(3)_____.Janeisthe(4)______.Peteristhe(5)______.Aliceisthenineteenth.Seveveisthe(7)______.Zoeisthe(8)_______.firstthirdfourthtwelfthtwenty-thirdtwenty-eighth219序數(shù)詞前加定冠詞the1999nineteenninety-ninetwothousandandeight1949年10月1日讀作:

October(the)first,nineteenforty-nine(月-日，年)thefirstofOctober,nineteenforty-nine（日-月，年）寫(xiě)作:October1st,1999(日用縮寫(xiě)，月-日-年)

October1,1999(日用數(shù)字)

1stOctober,1999日-月，年年份、日期表達(dá)法年用基數(shù)詞表示,兩位一讀,介詞用in日用序數(shù)詞表示,介詞用on表示“在…世紀(jì)”,用序數(shù)詞。在20世紀(jì)寫(xiě)作：in20thcentury讀作：inthetwentiethcentury常考點(diǎn)，易錯(cuò)點(diǎn)第1單元,第5課Unit1/thefirstunit/LessonFive/thefifthlesson302號(hào)房Room3029個(gè)生日，第9個(gè)生日,我的第9個(gè)生日nineparties,theninthparty,myninthpartyMakeadialogue:talkaboutthebirthdaysBetty--2JanuaryDavid-30SeptemberCindy--16JuneAlan--3MarchJay--22MaySam--12OctoberA:WhenisBetty'sbirthday?B:ItisonthesecondofJanuary/Januarythesecond.A:IsBetty'sbirthdayonthethetwelfthofJanuary?B:No.It'sonthesecondofJanuary.B.Instructionaboutnumbers3+99-33*99/3Add3and9Subtract3from9Multiply3by9Divide9by33plus9equals/is12.9minus3equals/is6.3multipliedby9equals/is27.9dividedby3equals/is3.3+9=129-3=63*9=279/3=3add,substract,multiply和divide都是動(dòng)詞。plusandminus都是介詞add…and…subtract…from…Readtheinstructionsaloud.B.Instructionaboutnumbers1.S1:Add11and1.S2:11plus1equals/is12.(11+1=12)2.S1:S_________5______13S2:______m__________equals/is______.()3.S1:M______7_______8.S2:____m________by__equals/is_