初三英語下學(xué)期數(shù)詞

數(shù)詞的用法及練習(xí)英語復(fù)習(xí)考點(diǎn)揭密1.掌握數(shù)詞的定義及分類；2.掌握基數(shù)詞的構(gòu)成及用法；3.掌握序數(shù)詞的構(gòu)成及特殊形式的序數(shù)詞，了解并能夠運(yùn)用數(shù)詞的其他用法。數(shù)詞(基數(shù)詞)表示數(shù)量的多少

(序數(shù)詞)表示人和事物的順序數(shù)詞就是表示事物的數(shù)量和順序的詞,分基數(shù)詞和序數(shù)詞兩種。基數(shù)詞(cardinalnumbers)的構(gòu)成及用法:1.1~12的基數(shù)詞是獨(dú)立單詞,無規(guī)律可循。eleventwelve2.13~19的基數(shù)詞一般在3~9對應(yīng)的基數(shù)詞后加-teen構(gòu)成，注意：thirteenfifteeneighteen3.20~90八個整十位數(shù)以后綴-ty結(jié)尾。注意：

twenty(20)thirty(30)forty(40)eighty(80)4.“幾十幾“的基數(shù)詞由十位數(shù)和個位數(shù)中間加連字符“-”構(gòu)成：twenty-nineninety-seven5.百位數(shù)和十位數(shù)之間，在英國英語要用“and”連接，在美國一般不用。

threehundredandfivefourhundredandforty-five

6.英語中“萬”及以上的表示法：53,461fifty-threethousand,sixhundredandforty-one30,045,310thirtymillionandforty-fivethousand,threehundredandten

7.hundred,thousand,million,billion前有確切數(shù)詞時，遵循“兩個無”原則，即無“s”，無“of”。threehundredpeopleninemillionbooks8.但hundred,thousand,million,billion前無確切數(shù)詞時，則遵循“兩個有”原則，即有“s”和“of”。manythousands

oftreesmillions

ofbirdstensofthousands

ofsoldiersthreehundredspeoplethreehundredofbooks9.基數(shù)詞常與名詞連用構(gòu)成復(fù)合定語，中間要用連字符，而且只用名詞的單數(shù)形式．a(chǎn)n800-hundred-wordcompositionafive-weekholidaya20-meter-tallbuilding10.基數(shù)詞可以表示年代、時刻、住所、房間、教室、電話號碼等。inthe1980’s(1980s)inthenineteeneightiesPagethreeRoom403atseventhirtyin1991(innineteenninety-one)

inone’sfifties(在某人50多歲的時候）注意下列習(xí)慣表達(dá)方式：halfanhourhalfakilotwoandahalfkilos=twokilosandahalfoneortwodays=adayortwoeightymeterslongonethousandmilesawayfivemetersdeep(wide/tall/high/long)fivemetersindepth/width/height/length序數(shù)詞(ordinalnumbers)的構(gòu)成及用法:基數(shù)詞one,two,three的序數(shù)詞分別為:first,second,third(1st2nd3rd)2.從第四到第十九的序數(shù)詞在基數(shù)詞后加“-th”．注意：fiftheighthninthtwelfth3.十位整數(shù)基數(shù)詞的序數(shù)詞需將詞尾的“y”改為“i”，再加“eth”構(gòu)成．twentytwentieth

fortyfortiethninetyninetieth4.“幾十幾”的數(shù)及４位數(shù)以上基數(shù)詞的序數(shù)詞只將個位變成序數(shù)詞即可．onehundredthonethousandthfourhundredandthirty-second5.日期的表達(dá)一般用序數(shù)詞．３月８日March8(th)讀作：Marchtheeighth6.用于最高級前表示“第二、第三…“thesecondmostusefulthethirdlargestcity7.second,third等與“a“連用，表示”又一，再一”．再一次asecondtime8.在…世紀(jì)：inthetwenty-firstcenturyinthenineteenthcentury概數(shù)的表示法Over/above/morethan+數(shù)字或：數(shù)字＋odd(…多／以上）

over/morethantwoyears(兩年多）

abovetwentypounds(２０磅以上）

thirtyoddyears(30多年）2.below/under/lessthan+數(shù)字（不足／不到…，…以內(nèi)）belowsixdaysundertwohourslessthan60miles3.about/nearly/some/toward(s)/moreorless+數(shù)字?jǐn)?shù)字＋orso/moreorless(大約／近…，…上下／左右）

about90yardsnearlyonetenthsomefiftyfeetninekilosorsomoreorless20meters/20metersmoreorless“每隔”與“每逢”的表示法：兩種結(jié)構(gòu)：

every+基數(shù)詞＋復(fù)數(shù)名詞every+序數(shù)詞＋單數(shù)名詞everyfourdayseveryfourthday每四天（每隔三天）everythreelineseverythirdline每三行（每隔二行）每隔一天：everyotherdayeverytwodayseveryseconddayThebusrunseveryfiveminutes.Oneineverytwentystudentsistobechosenastherepresentative.一些數(shù)學(xué)公式、小數(shù)和分?jǐn)?shù)的表示法：7X3=21Seventimes/multipliedbythreeistwenty-one.9÷3=3Ninedividedbythreeis3.3.5threepointfive?a(one)half1/3onethird?a/onefourtha/onequarter4/5fourfifths12/23twelvetwenty-thirds英、美樓層的不同表示法：美英漢firstground一層secondfirst二層thirdsecond三層一、表示事物的編號基數(shù)詞放在名詞的后邊，該名詞一般要大寫；序數(shù)字放在名詞的前面，加定冠詞。如：Lesson1/thefirstlessonRow3/thethirdlesson二、年、日、時刻的表達(dá)方法1、“年”用基數(shù)詞，“日”用序數(shù)詞，前面要加定冠詞。讀的順序是月、日、年。如：1999年5月2日讀作：Maythesecond,nineteenninety。2、“時刻”用基數(shù)詞表達(dá)，同時要注意以下幾點(diǎn)：1）表示“整點(diǎn)”時，在基數(shù)詞后加o’clock,如：9o’clock.數(shù)詞的用法:2）分鐘小于或等于30分鐘的，用“分鐘數(shù)+past+鐘點(diǎn)數(shù)”形式；如分鐘數(shù)大于30分鐘的，用“到下一個分鐘數(shù)所差的分鐘數(shù)+to+下一個分鐘數(shù)”形式；也可以依次讀鐘點(diǎn)數(shù)和分鐘數(shù)。如：7:20twentypastseven或seventwenty3)注意表示兩個特殊的表示分鐘的單位詞；30分鐘用half,15分鐘用aquarter。如：6:30讀作：halfpastsix5:45讀作：aquartertosix6:15讀作：aquarterpastsix三、分?jǐn)?shù)的表達(dá)方法：表示分?jǐn)?shù)時，分子用基數(shù)詞，分母用序數(shù)詞，分子大于1，分母用復(fù)數(shù)；分?jǐn)?shù)修飾名詞時，后面用短語。

如：onethirdofteachersthreeseventhsoftheboys

??分別用ahalf和aquarter表示。四、“基數(shù)詞-名詞-形容詞”只能用在名詞前作定語。如：sheisa3-year-oldgirl.Theyliveina7-storey-highbuilding.注：這種結(jié)構(gòu)中名詞不能用復(fù)數(shù)，同時只能作定語，用作表語時，不用連字符，名詞用復(fù)數(shù)。如：Jimis10yearsoldthisyear.Jimisa10-year-oldboy.專題例析:例1Thenumber2,146isreadas__________.A.twothousandsandonehundredandfortyandsix.B.twothousandandahundredandforty-six.C.twothousand,onehundredandforty-six.D.twothousands,onehundred,forty-six.分析:英語數(shù)字的讀法是有規(guī)律的,百位跟十位之間加and,十位與個位用連字符,三位以上的數(shù)用逗號分開,第一個逗號代表thousand等.根據(jù)數(shù)字的讀法,可以找出正確答案為C.例2Thereare_____peopleinmyfamily.Weliveinthe_____floorinatallbuilding.A.five;sixB.fifth;sixthC.fifth;sixD.five,sixth分析:第一個空表示數(shù)量用基數(shù)詞,第二個空表示順序用序數(shù)詞,選D.例3——Excuseme,howdoesthisnumber20,135read?

——Itreads___________.A.twentythousandsonehundredandthirtyfiveB.twentythousandonehundredthirtyfiveC.twentythousand,onehundredandthirty-fiveD.twentythousands,onehundredandthirty-five分析：根據(jù)數(shù)字的讀法規(guī)律，選C。例4Inourclass______ofthestudentsaregirls.A.threefifthsB.threefifthC.thirdfiveD.thirdfifths分析：根據(jù)分?jǐn)?shù)的表達(dá)方法，分子用基數(shù)詞，分母用序數(shù)詞，分子大于1，分母用復(fù)數(shù)可以找到正確答案為A。【例1】Whichisthesmallestnumberofthefour?______A.AhalfB.AquarterC.TwothirdsD.Three-fourths典型例題解析【例2】Davidhas_________cat.It‘sverynice.［2003，四川］A.aB.anC.theBA【例3】A_________schoolboy,LiLida,firsttriedtocrosstheQiongzhouChannelinJune，2000.［2003，呼和浩特］A.12-year-oldB.12-years-oldC.12-year-oldD.12-years-old【例4】ItissaidthatSARShaskilledmorethan_________peopleworldwide.［2003，杭州］A.threehundredsB.threehundreds'C.threehundred'sD.threehundred【例5】_________sunisshiningbrightly.［2003,吉林］A.AB.AnC.TheD.不填A(yù)DC專題訓(xùn)練:Thisabigclass,and______ofthestudentsaregirls.A.twothirdB.secondthreeC.twothirdsD.twothreeThequestionsisveryeasy,evena_____childcananswerit.A.three-yearsoldB.threeyearsoldC.three-year-oldD.threeyearold3.The_____manontheleftisBeckman,afamousfootballplayer.A.twoB.secondC.three4.——Whichclasswonthematchintheend?——I’mnotsure.Maybe_____did.A.ClassThirdB.ClassThreeC.thirdthreeD.ClassThreeCCBD5.Nine_____poundsaweek?That’sverygood.A.hundredofB.hundredsofC.hundredsD.hundred.6.Sharkshavebeenontheearthfor_____years.A.thousandsofB.twothousandsC.twothousandsofD.thousandof7.______peoplecometoJilintovisitMountChangbaieveryyear.A.ThousandsofB.ThousandofC.ThousandsD.Thousand8.Thecomputerwascheap.Ispentonlytwo_____yuanonit.A.thousandsB.thousandC.thousandsofD.thousandofDAAB9.About_____oftheworkersintheclothesfactoryarewomen.A.thirdfifthsB.thirdfifthC.threefifthsD.threefifth10.Theroadisover______metreslong.A.sixhundredsandfifty-twoB.sixhundredandfifty-twoC.sixhundred,fifty-twoD.sixhundred,fiftyandtwo11.Septemberis_____monthoftheyear.A.ninthB.eighthC.theeighthD.theninth12.It’sabout______kilometresfromNanningtoBeijing.A.twothousandfivehundredandsixtyB.twothousandfivehundredsandsixtyC.twothousandsfivehundredandsixtyD.twothousandsfivehundredsandsixtyCBDA13.Everyyear,______fishesarekilledbythepollutedwater.A.millionofB.millionsofC.twomillionsofD.twomillions14.Theboytoldtheoldwoman,“Thetrainwillarriveattwototwo.”Itmeans______.A.2:02B.2:20C.1:58D.1:4015.Sarasaidwewouldmeetat_____infrontofthemuseum.A.onethirtyB.halfanhourC.oneandthirtyD.onepastthirty16.We’llhavea_____holidayaftertheexam.A.twomonthB.two-monthC.twomonth’sD.two-monthsBCAB17.Nowchildren,turntopage______andlookatthe_____pictureinLessonTwo.A.twentieth;oneB.twenty;oneC.twentieth;firstD.twenty;first18.Todaywearegoingtolearnthe____lesson.A.twentyB.twentithC.twentiethD.twentyth19.Dinosaureggswerefoundinthe_____.A.1990B.1990thC.1990sD.1990s’20.——HowoftendoItakeit?——______.A.twiceB.twiceadayC.twiceonedayD.intwicedaysDCCBⅡ.用英語寫出下列各題。1.1978年9月12日_________________________________________2.三點(diǎn)半__________________________________________3.八點(diǎn)差一刻___________________________________________4.2，973，608______________________________________________________________________________________5.第二十層___________________________________________課時訓(xùn)練Septemberthetwelfth,nineteenseventy-eighthalfpastthreeaquartertoeighttwomillion,ninehundredandseventy--threethousand,sixhundredandeightthetwentiethfloor用適當(dāng)?shù)臄?shù)詞填空（InEnglish）：1．－What’s11plus20?

－It’s__________.2．Chinahasthelargestpopulation.Butwhichcountryhasthe__________largestpopulation?3．Septemberisthe__________monthoftheyear.4．－Whatclassareyouin?

－I’minClass__________(8).5．Thereare________minutesinanhour.thirty-onesecondninthEightsixty6．ThePRCwasfoundedonOctober1,1949.HowwillyousaythisyearinEnglish?_____________________7．Hishairturnedwhitewhenhewasonlyinhis__________(40s).8．Thetrainwillleaveat9:00.It’s7:30now.Wehavestill_____________left.9．____________(3/4)ofthelandiscoveredbyforestsinHolland,thecountryofflowers.10．Dinosaursdisappearedabout________________(65000000)yearsago.nineteenforty-ninefortiesoneandahalfhoursThreequarterssixty-fivemillion根據(jù)句意填空1.Theyalwaysgotothelibrary

(one)aweek.2.Theytrieda

(five)time,butwithoutluck,theyfailedagain.3.Thereare

studentsinourclass,twenty-twoboysandtwenty-twogirls.4.Ourteacheroftentellsusthatworkmustcomes

______.5.Thereare

floorsinthebuilding.Andweliveonthe

floor.(19)6.Macaoreturnedtoourmotherlandattheendofthe

________century.7.About

oftheworkersinthatsteel-worksareyoungpeople.(3/5)oncefifthforty-fourfirstnineteennineteenthtwentieththreefifths1.—Where's_________mathsteacher?—He'stalkingwithSam'sfather.A.aB.anC.theD.／2.Thoughthefirstletteris_________“u”intheworlduseful,wemustsay“_________usefulbook”.A.a,aB./,aC./,anD.an,an3.WangQingisa_________boy.A.five—years--oldB.five—year--oldC.fiveyearoldD.fiveyearsold4.Wecansee_________starsatnightifitdoesn'train.A.thousandB.thousandsC.thousandsofD.thousandof5.Wearethirsty.Pleasegiveme_________.A.twocupsofteaB.twocupsteaC.twocupofteasD.twocupsofteas課時訓(xùn)練CABCA6.Ihave_________orange.Youmaydrinkit.A.alittleB.afewC.fewD.little7.Thelowtempertarewillbeminus5.

Theunderlinedparemeans_________A.5B.-5C.0.5D.＜58.I'mafraidwehavetoget_________forthemeeting.A.twentymorechairsB.moretwentychairsC.twohundredschairsD.twentyonechairs9.WhenisChristmasDay,doyouknow?___________.A.October1stB.June1stC.November25thD.December25th10.—Whichis_________secondlongestriverinChina?—YellowRiver.A.a,/B.the,TheC.the,/D./,A課時訓(xùn)練(A)(B)(A)(D)(B)11.Whatwasthedateyesterday?Itwas_________.A.FridayB.afinedayC.July1stD.200312._________istheeasiestofall.A.LessononeB.TheLessononeC.LessonFirstD.FirstLesson13.Therearetallbuildingson_________sideofthestreet.A.everyB.eitherC.bothD.all14.Ifyoulikethechicken,youcanhaveas_________asyoucan.A.muchB.manyC.moreD.little15.Wouldyoulike_________bread?A.anotherB.otherC.somemoreD.muchmore課時訓(xùn)練CABAC16.XiaoMaoandDaMaoarein

.A.teamFourthB.theteamFourC.TeamFourD.Fourteam17.Wereyou

tocometomyofficelastnight?A.thetwooneB.thesecondoneC.secondstudentD.twoone18.Sorry,

hadbeensoldout.A.42size