小升初英語數(shù)詞專項(xiàng)講解及練習(xí)

數(shù)詞數(shù)詞的種類數(shù)詞分基數(shù)詞和序數(shù)詞基數(shù)詞是表示自然數(shù)列的詞,例如;one、two、three、four…..序數(shù)詞是表示先后順序的詞,例如:first、second、third、fourth…二基數(shù)詞和序數(shù)詞的表示法1．基數(shù)詞單詞的拼寫：1~12為單詞onetwothreefourfivesixseveneightnineteneleventwelve13~19都以后綴-teen結(jié)尾，20至90這樣的整十?dāng)?shù)都以后綴-ty結(jié)尾，其他基數(shù)詞中間加連字符號“-〞再按照上述的變化進(jìn)行。例：21→twenty-one56→fifty-six85→eighty-five三位數(shù)的構(gòu)成為：幾+百+and+末兩位〔或末一位〕數(shù)例：132→onehundredandthirty-two205→twohundredandfive千以上的數(shù)字的讀法：從后面往前，每三位數(shù)作為一個(gè)單位，分別為thousand、million.32、548、652、讀作：1.thirtytwomillion2.fivehundredandfortyeightthousand3.sixhundredandfiftytwo序數(shù)詞=基數(shù)詞+th(1、2、3為first、

second、third)。數(shù)詞分基數(shù)詞和序數(shù)詞但以下幾種情況要注意：1)fifth(第五)、eighth(第八)、ninth(第九)、twelfth(第十二〕2)以ty結(jié)尾的基數(shù)詞變詞尾為tieth例：twenty→twentieth

ninety→ninetieth序數(shù)詞表示十位與個(gè)位數(shù)時(shí)，十位與個(gè)位之間用“—〞3)復(fù)合序數(shù)詞只需要將相應(yīng)基數(shù)詞中最后一位變成序數(shù)詞，其余不變。例：第二十一→twenty-first第二百四十五→twohundredand

forty-fifth三基數(shù)詞序數(shù)詞的用法1.hundred、thousand、million與數(shù)字連用，表示一定量的具體數(shù)字，不用復(fù)數(shù)，但表示不定概念可用復(fù)數(shù)例：threehundredpeoplemillionsofpeople2.基數(shù)詞表示時(shí)刻。例：7點(diǎn)seveno’clock7:20seventwenty3.給某些事物編號例：LessonOne=thefirstlesson7月1日=JulyI(JulyIst)1996年6月3日=June3,1996=Junethethird,nineteenninety-six4.in+one’s+整數(shù)數(shù)詞的復(fù)數(shù)形式表示年齡例：Theoldwomanisinhernineties.Heishisearlyforties.5.有關(guān)倍數(shù)表示法兩倍用twice,三倍以上用數(shù)詞+times,要注意倍數(shù)在句子的位置。例：例：Thedooristhreetimesthesizeofthis.Heisdoublemyage.數(shù)詞－Practice練習(xí)吧寫出以下數(shù)詞對應(yīng)的英語形式。單項(xiàng)選擇〔〕1.Thereare____daysinaweek.A.thesevenB.seventhC.theseventhD.seven〔〕2.Ithinkthatthe_____century(世紀(jì))willbringusmorehopes.A.twenty-oneB.twentieth-firstC.twenty-firstD.twentieth-one〔〕3.--Howmanystudentsarethereinyourschool?--___thestudentsinourschool_____overtwothousand.A.Thenumberof;isB.Thenumberof;areC.Anumberof;isD.Anumberof;are〔〕4.Thenewstudentisin_____.A.Class2B.ClassSecondC.2ClassD.class2〔〕5.--Howmanyteachersarethereinyourschool?--_____,butI’mnotsure.A.HundredsB.HundredC.HundredsofD.Onehundred〔〕6._____oftheteachersinourschoolisaboutonehundred,andofthemare___womenteachers.A.Thenumber,two-thirdsB.Thenumber,two-thidC.Anumber,halfD.Anumber,three-quarters〔〕7.--Dad,whenwillyoubefree?--Iamsorry,Jean.ButIthinkIwillhavea___holidaysoon.A.four-daysB.four-dayC.fourdaysD.fourday〔〕8.FanZhiyi’stransfertoDundeeFootballClubattheendoflastyeararoused(激起)____Chinesepeople’sinterest.A.thousandofB.thousandC.thousandsofD.thousands〔〕9.Thisstoryhappenedon____.A.1989,Oct21stB.Oct.21st,1989C.21Oct,ber,1989D.21stofOctber,1989〔〕10."Sevenfive"canbewritten____.A.fivesevensB.fivetosevenC.sevenfivesD.fivepastseven〔〕11.TheEnglishfor10,440is____.A.tenthousand,fourhundredsandfortyB.tenthousand,fourhundredandfortyC.tenthousands,fourhundredandfortyD.tenthousandandfourhundred,forty〔〕12.____oftheworkersinthefactoryisabouttwohundred,____ofthemare_____womenworkers.A.Thenumber,first-thirdB.Thenumber,one-thirdC.Anumber,halfD.Anumber,threequarters〔〕13.---Canyouwritethenumbereighty-fivethousand,sixhundredandtwenty-six?---Yes,itis____.A.85662B.85626C.85006D.85620〔〕14.About____ofthebooksinourschoollibraryarewritteninChinese.A.Fourth-fifthsB.four–fifthC.four–fifthsD.fourths-fifth〔〕15.Theroadisover____meterslong.A.sixhundredandfifty-twoB.sixhundredsandfiftytwoC.sixhundred,fifty–twoD.s