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英语基本词汇
2013-09-03 | 阅:  转:  |  分享 
  
?7.1000以上的数字,从后往前数每三位加一个逗号“,”第一个逗号前为千(thousand),第二个逗号前为百万(million),第三
个逗号前为billion(十亿)。英语中无“万”这个词,我们可以用“几十个千(thousand)”表示几万,“几百个千(thous
and)”表示“几十万”。如:2,510=twothousandfivehundredandten;84,296=eig
ht-fourthousandtwohundredandninety-six;274,350=twohundreda
ndseventy-fourthousandthreehundredandfifty。一、基数词的构成??
1.1—12的基数词是独立的单词,即:one,two,three,four,five,six,seven,eight,nin
e,ten,eleven,twelve。???2.13—19的基数词以-teen结尾。如:fourteen,sevente
en等,但13,15,18较特殊,13—thirteen15—fifteen18—eighteen。???3.20—9
0的整十位均以-ty结尾。如:sixty,ninety,但20,30,40,50,80较特殊,20—twenty30—thi
rty40—forty50—fifty80—eighty。???4.十位数与个位数之间要加连字符号“-”,如:28—t
wenty-eight,96—ninety-six。??5.百位和十位(若无十位则和个位)之间加and,如:148—oneh
undredandforty-eight406—fourhundredandsix。??6.hundred(百)
,thousand(千),million(百万),billion(十亿)等前面即使有具体的数词,也不能在它们的后面加s。如:600
—sixhundred,8百万—eightmillion。?数词(numerals)1.基数词one
13thirteen31thirty-onetwo14fourteen
40fortythree15fifteen50fifty4
four16sixteen60sixty5five
17seventeen70seventysix18eighteen8
0eightyseven19nineteen90ninetyeight
20twenty100onehundrednine21twenty-o
ne101onehundredandone10Ten22twenty-two200
twohundred11eleven23twenty-three12twelve30
thirty??序数词一般是以与之相应的基数词尾加-th构成,例如fourth,tenth,但以下的这些基数词变为序数
词时,有特别之处。1.one---first,?two---second,?three---third,fiv
e---fifth,?nice---ninth,?twelve---twelfth2.以ty结尾的单词,
要先变y为i,在加-eth.例如:thirty---thirtieth,fifty---fiftieth3.以one
,two,three等结尾的多位数词,要将各位数变成序数词。例如:?twenty-one---twenty-fir
st,?onehundredandone---onehundredandfirst?注意:序数词前常用定冠词
the,有时还可以用不定冠词a/an则表示“又一”的意思。????????例如:MrBrownhasase
condcar.?布朗先生另外还有一辆车。Hehastriedasecond
time.?他又尝试了一次。序数词first1steleventh11th
eightieth80thsecond2ndtwelfth12th
ninetieth90ththird3rdtwentieth20th
hundredth100thfourth4thtwenty-first21
stfifth5ththirtieth30thsixth
6ththirty-first31stseventh7th
fortieth40theighth8thfiftieth
50thninth9thsixtieth60thtenth10thseventieth70th
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