最新小升初英語(yǔ)數(shù)詞專(zhuān)項(xiàng)講解及練習(xí)

1、精品文檔數(shù)詞一、數(shù)詞的種類(lèi)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(xiě)：112為單詞onetwothreefourfivesixseveneightnineteneleventwelve1319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(hào)“-”再按照上述的變化進(jìn)行。例：21twenty-one56fifty-six85eighty-five三位數(shù)的構(gòu)成為：幾+百+and+末兩位（或

2、末一位）數(shù)例：132onehundredandthirty-two205twohundredandfive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.thirtytwomillion精品文檔精品文檔2.fivehundredandfortyeightthousand3.sixhundredandfiftytwo2.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

3、二）2)以ty結(jié)尾的基數(shù)詞變?cè)~尾為tieth例：twentytwentiethninetyninetieth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twohundredandforty-fifth精品文檔精品文檔三基數(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)sevenoclock7:20s

4、eventwenty3.給某些事物編號(hào)例：lessonone=thefirstlesson7月1日=julyi(julyist)1996年6月3日=june3,1996=junethethird,nineteenninety-six4.in+ones+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。精品文檔精品文檔例：例：thedooristhreetimesthesizeofthis.heisdoublemyage.精品文檔精品文

5、檔數(shù)詞practice練習(xí)吧1.寫(xiě)出下列數(shù)詞對(duì)應(yīng)的英語(yǔ)形式。2.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.thenumber

6、of;isb.thenumberof;arec.anumberof;isd.anumberof;are（）4.thenewstudentisin_.a.class2b.classsecondc.2classd.class2精品文檔精品文檔（）5.-howmanyteachersarethereinyourschool?-_,butimnotsure.a.hundredsb.hundredc.hundredsofd.onehundred（）6._oftheteachersinourschoolisaboutonehundred,andofthemare_womenteachers.a.thenu

7、mber,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.fanzhiyistransfertodundeefootballclubattheendoflastyeararoused(激起)_chinesepeoplesinterest.a.thousandofb.thous

8、andc.thousandsofd.thousands（）9.thisstoryhappenedon_.a.1989,oct21stb.oct.21st,1989c.21oct,ber,1989d.21stofoctber,1989（）10.sevenfivecanbewritten_.a.fivesevensb.fivetosevenc.sevenfivesd.fivepastseven（）11.theenglishfor10,440is_.a.tenthousand,fourhundredsandfortyb.tenthousand,fourhundredandfortyc.tenthou

9、sands,fourhundredandfortyd.tenthousandandfourhundred,forty精品文檔精品文檔（）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.fourfifthc.fourfifthsd.fourths-fifth（）15.theroadisover_meterslong.a.sixhundredandfifty-twob.sixhundredsandfiftytwoc.sixhundred,fif