摘要:學位英語考試要求學生掌握基本的英語語法知識,其中就包括掌握數(shù)詞的用法。以下是為大家整理的相關(guān)資料。更多學位英語相關(guān)資訊,請關(guān)注希賽網(wǎng)英語頻道。
四、數(shù)詞
一、基數(shù)詞
1)基數(shù)詞寫法和讀法:
one two three four five six seven eitht nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty-one thirty forty fifty sixty senventy eithty ninety hundred thousand million billion
345 three hundred and forty-five;
2)基數(shù)詞一般是單數(shù)形式,具體數(shù)目+單數(shù)。如:two thousand, seven thousand 但下列情況,常用復數(shù):
a. 表示不確的數(shù)目hundred thousand million billion后加s與of 短語連用,如:thousands of ;millions of 表示概數(shù),不能與具體數(shù)目連 用,如scores of people 指許多人;
b. 在一些表示"一排"或"一組"的詞組里;
如:They arrived in twos and threes. 他們?nèi)齼蓛傻牡竭_了。
c. 表示"幾十歲";
d. 表示"年代",用 in +the +數(shù)詞復數(shù);
e. 在乘法運算的一種表示法里,如:3 x 5 = 15 Three fives is (are) fifteen.
二、序數(shù)詞
序數(shù)詞的縮寫形式: first---1st second---2 third-3rd fourth-4th fifth-5th
sixth-6th seventh-7th eithth-8th ninth-9th tenth 10th eleventh-11th twelfth-12th
thirteenth-13 fourteenth-14th fifteenth-15th sixteenth-16th seventeenth-17th
eithteenth-18th nineteenth-19th twentieth 20th thirtieth 30th thirty-first---31st
第四到十九基數(shù)詞后加th構(gòu)成。
十位數(shù)的序數(shù)詞由相應的基數(shù)詞變y為I 加eth構(gòu)成。
第二十一到九十九等,前面的十位數(shù)用基數(shù)詞,后面的個位數(shù)用序數(shù)詞,中間用連字符“一”連接。
第一百 一千 一百萬分別在相應的基數(shù)詞后面加th.
序數(shù)詞之前一般要加定冠詞或代詞。如:Sunday is the first day of the week.He is my first
teacher.
有時,序數(shù)詞前用不定冠詞,表示再一,又一“的意思。如:Then he tried a second time.
三、 數(shù)詞的用法
1)倍數(shù)表示法
a. 主語+謂語+倍數(shù)(或分數(shù))+ as + adj. + as
I have three times as many as you. 我有你三倍那么多。
b. 主語+謂語+倍數(shù)(分數(shù))+ the size (amount,length…) of…
The earth is 49 times the size of the moon. 地球是月球的49倍。
c. 主語+謂語+倍數(shù)(分數(shù))+ 形容詞(副詞)比較級+ than…
The grain output is 8 percent higher this year than that of last year.今年比去年糧食產(chǎn)量增加8%。
d. 還可以用by+倍數(shù),表示增加多少倍
The production of grain has been increased by four times this year.今年糧食產(chǎn)量增加了4倍。
2)分數(shù)表示法
構(gòu)成:基數(shù)詞代表分子,序數(shù)詞代表分母。分子大于1時,分子的序數(shù)詞用單數(shù),分母序數(shù)詞用復數(shù):1/3 one-third ; 3/37 three and three-sevenths
四.年月日的表達法,先月后日,把年代放在最后,用逗號隔開。1949,10,1讀作:October first nineteen fourty-nine
時刻的表達法:1,按順序讀,用基數(shù)詞。如:7:30 seven thirty 8:15 eitht fifteen 12:48 twelve forty-eitht.
2.用介詞past,past之前為分鐘數(shù)(須在半小時以內(nèi),包括半小時)past之后為鐘點數(shù)。Eg:6:11: eleven past six 7:15 :fifteen(a quarter) past seven 9:3o: thirty (half) past nine
3.用介詞to,to前為分鐘數(shù)(須在半小時以上,不包括半小時)to之后為下一個鐘點數(shù),表示“差幾分到幾點”。如:7:15 fifteen(a quarter) to eitht 11:36 twenty-six to twelve口訣:半小時及以內(nèi)用past,分在前,點在后,中間past;------幾點過幾分
半小時以后用to,分在前(分用60減),點在后(點加上1),用to來連接------差幾分到幾點。
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