初升高总复习3数词

初升高总反复数词数词：表示数目多少或顺序先后的词叫数词。数词有两种：

表示数目多少的数词叫基数词，如：one，ten，twenty-three；

表示顺序先后的数词叫序数词，如：first，third，twentieth。英语名称：Numeral

缩写形式：num.

1.基数词

基数词相当于名词，在句中可作主语、表语、定语、状语等。

［例句］

ThreeofmyclassmatesarefromShanghai.Iamtwentythisyear.Theyhavefourclassesinthemorningandthreeintheafternoon.2.基数词的构成结构21~99的两位数字，在10位和个位之间加连字符构成，如89eighty-nine.101~999的三位数字，由hundred加and再加二位数或末位数字，如：101-onehundredandone,223-twohundredandtwenty-three.四位以上数字，应从个位起向前数三位加逗号，读作thousand;再数三位加第二个逗号，读作million;再数三位加逗号，读作billion，其读法如下：1001-onethousandandone5386-fivethousand,threehundredandeighty-six3.

数词的用法：1)表示年、月、日，“年”用基数词，“日”用序数词。如：Mayeleventh，20102)表示时间。如：It’seleventwenty.3)表示编号。编号既可以用基数词表示，也可以用序数词表示。区别是基数词用在名词之后，序数词用于名词之前，并加定冠词。如：LessonNine；theNinthLesson4)序数词前加冠词“a”表示“再一次”。如：CanItryasecondtime?要注意的是hundred,thousand,million与billion的用法。①前面有别的基数词时，即若干个百、千、百万、十亿时，其本身都不要加s，如：threehundredstudents。②若表示成百，成千或数百，数千时，前面不能有基数词，但其本身要用复数形式，然后+of+名词复数。如：fivehundredstudents；millionsofpeople4.

与数词相关的主谓一致原则1)当名词短语的中心词为表示时间、路程、金钱或重量等的复数名词时，往往根据意义一致的原则，把这些复数名词看作一个整体，谓语采用单数形式。［例句］Twentydollarsisnotenough.二十美元不够。2）如果“数词”是单用时，则表示人或物，谓语动词一般用复数。［例句］Threewerekilledandtenweremissinginthataccident.

在那起事故中，三人被杀，十人失踪。2.

序数词1)序数词的构成：★大多数的序数词是由基数词加-th构成。如：seven―

seventh；ten―

tenth★以-t结尾的基数词只在词尾加-h。如：eight―

eighth★以-ve结尾的基数词改-ve为-f再加-th。如：five―

fifth；twelve―

twelfth★以-y结尾的基数词改-y为-ie再加-th。如：twenty―

twentieth，thirty―

thirtieth★几十几的序数词只在个位数上有所改变。如：twenty-one―

twenty-first；thirty-three―

thirty-third★特殊的序数词：one―

first；two―

second；three―

third；nine―

ninth1onefirst1st2twosecond2nd3threethird3rd4fourfourth4th5fivefifth5th6sixsixth6th

7sevenseventh7th8eighteighth8th9nineninth9th10tententh10th11eleveneleventh11th12twelvetwelfth12th13thirteenthirteenth13th14fourteenfourteenth14th15fifteenfifteenth15th16sixteensixteenth16th17seventeenseventeenth17th18eighteeneighteenth18th19nineteennineteenth19th20twentytwentieth20th21twenty-onetwenty-first21st30thirtythirtieth30th

40fortyfortieth40th50fiftyfiftieth50th

60sixtysixtieth60th70seventyseventieth70th

80eightyeightieth80th90ninetyninetieth90th

100a(one)hundredhundredth100th104onehundredandfour

hundredandfourth104th1000a(one)thousand

thousandths1000th

10000tenthousand

tenthousandths10000th1000000onemillion

millionth1000000th2)序数词的用法：序数词在句中同样可作主语、表语、定语、状语等。［例句］JunethefirstisChildren’sDay.Whendidyoufirstmeeteachother?Shewasthelasttoarrive.【巧学妙记】基数词变序数词歌诀表示日期有两种说法和四种写法，如：2月1号英语表达法为：thefirstofFebruary而美语为February(the)first,但其书写上可有四种写法①February1②February1st

③1stFebruary④1/2。倍数的讲法有所不同。两倍用twice,而三倍以上用数词加times,如：HehasthreetimesasmanybooksasIhave.表示时间：7：05sevenfivefivepastseven6:55sixfifty-fivefivetoseven9:30halfpastnineninethirty10：00teno’clock其他数字表示法小数的小数点读作point，零读作o或zero,小数点后面的数字按个位基数词依次读出。分数分子用基数词，分母用序数词，当分子大于1时，分数要在序数词上加s，但1/2用onehalf,1/4用aquarter.1/3

读作onethird而

2/3

读作twothirds。百分数(%)，读作percent(percent),但不论是多少均用作单数形式不能加s。【考题链接】1.—What’sthetime,please?—It’s_______.A.ninethirty-five

B.forty-eightpastsixC.fifty-fivetofourD.thirty-onetwo答案：A思路分析：表示时间应用基数词。时间的表达方式有多种，可直接说出时间；若没有超过三十分钟的用past表示；若超过三十分钟的用to表示。2.Januaryis_______monthoftheyear.A.one

B.theone

C.first

D.thefirst答案：D思路分析：在英语中表示“第一、第二、第三”等应用序数词，并在其前加定冠词the。3.Thereare_______daysinayear.

A.threehundredssixty-five

B.threehundredandsixty-five

C.thethirdhundredsixty-five

D.thirdhundredandsixty-five思路分析：表示数目多少时用基数词。当hundred,thousand,million,billion前有具体的数词时，其后不能加-s，但在hundredsof,thousandsof,millionsof,billionsof短语中则要用其复数形式。答案：B

4.Thecomputerwascheap.Ispentonlytwo_______yuanonit.

A.thousands

B.thousand

C.thousandsof

D.thousandof思路分析：与数词连用的thousand其后不能加-s，也不能与of连用。答案：B5.Nowchildren,turntopage_______andlookatthe_______pictureinLessonTwo.A.twentieth,one

B.twenty,one

C.twentieth,first

D.twenty,first思路分析：表示“页码”时应用基数词，表示“第……幅图”时应用序数词。答案：D(二)提分技巧1.

序数词前面加定冠词the,表示顺序，即

“第几”；加不定冠词a/an,表示“再一次，又一次”，相当于another。2.

hundred,thousand等词，与数词连用，用单数；与of连用，用复数。3.

a/an表示泛指,the表示特指。一般情况下，第一次出现的人和物用a/an,第二次出现时，用the。4.

名词前面加the,名词表示具体的建筑物或实物；名词前面零冠词（one），名词表示抽象的概念。<一>根据所给的汉语及句意，用恰当的单词或短语完成句子：1.Thereare______________________(三十或三十一)daysinamonth.2.Themanliveson________________(四十)floor.3.Whatwillbethepopulationoftheworldbytheendofthe___________(二十)century?4.Mother’sDayisonthe___________(第二)SundayinMay.5.About___________(一半)ofhisbooksareinEnglish.6.Thereis______pictureof___________elephanton___________wall．7.Thisis___________usefulbook．I'vereaditfor___________hour．thefortieththirtyorthirty-onetwentiethsecondahalfaantheaan8.Let'sgooutfor___________walk．9.It'stoohot．Open___________door，please．10.Thereis___________womanover

there.

___________womanisMeimei'smother．

<二>单项选择1.Thereare_______monthsinayear.Decemberisthe_______

monthoftheyear.

A.twelve;twelve

B.twelve;twelfth

C.twelfth;twelve

D.twelfth;twelfth2Therearetwo______peopleinthemeetingroom.

A.hundred

B.hundreds

C.hundredsof

D.hundredofatheathe3.Mybrotherisin_______.

A.ThreeClass,OneGrade

B.ClassThree,GradeOne

C.GradeOne,ClassThree

D.classthree,gradeone4.Hewillcomehere_______tomorrowmorning.

A.atfifth

B.atten

C.ontwo

D.tilltenth5.Thereis________appleonthedesk.A.a B.

the C.anD.

/6.Thegirlunder_______treeismysister.A.a B.

the C.

an D.

/7.Maryisfrom________USA.A.a B.theC.an D./8.Hemet________friendofhisontheroad.A.aB.theC.anD./9.Mr.BlackwillgobacktoEngland_________.A.byplane

B.byaplaneC.bytrains

D.atatrain10.YesterdayIwentto__________workon___________foot.A./,/B./,theC.the,/

D.the,the11._______appleadaykeepsthedoctorsaway.

A.The

B.A

C.An

D.Two12.—Howmanybooksdoyouhave？

—Ihave_______

book.That's_______

Englishbook.

A.a；an

B.a；one

C.one；an

D.one；one13.Tomis____intherow.A.asecondB.thesecondC.twoD.second14.Thegirlwantedtosing____songinEnglish.A.theothersB.asecondC.other

D.thesecond15.Nowletmehave____.A.thethirdtry

B.athirdtry

C.thirdtry

D.thisthirdtry16.During____century,theworldpopulationhasalreadyreached6billion.

A.twenty

B.thetwentieth

C.twentieth

D.thetwenty17.Sundayisthe____dayoftheweek.A.seventh

B.first

C.second

D.third18.Autumnis__________seasoninayear.

A.thefourth

B.thethird

C.athird

D.thethreeth19.Tomwas_______togettoschoolandIwas______.A.first;ninth

B.afirst;aninth

C.thefirst;theninth

D.thesecond;thenineth20.—DoesJimhave_______ruler？

—Yes，hehas_______．A.an；some

B.a；one

C.a；／D.any；one21.Thereis_______

oldbike._______oldbikeisMrZhao's.

A.an；The

B.the；An

C.a；The

D.the；The22.AtthattimeTomwas_______one-year-oldbaby.

A.a

B.an

C.the

D.／23._______tigeris_______

China.

A.The;a

B.A;the

C.The;from

D.The;the2