英語常用數(shù)詞學習:基數(shù)詞、序數(shù)詞
(1)1-20
one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen, sixteen,seventeen,eighteen,nineteen,twenty
(2)21-99 先說“幾十”,再說“幾”,中間加連字符。
23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→eighty-nine,91→ninety-one
(3)101—999先說“幾百”,再加and,再加末兩位數(shù)或末位數(shù);
586→five hundred and eighty-six,803→eight hundred and three
(4)l,000以上,先從右往左數(shù),每三位數(shù)加一個“,”,第一個“,”前為thousand.第二個“,”前為million,第三個“,”前為billion
1,001→one thousand and one
18,423→eighteen thousand,four hundred and twenty-three
6,260,309→six million two hundred and sixty thousand three hundred and nine
750,000,000,000→seven hundred and fifty billion
序數(shù)詞
(1)一般在基數(shù)詞后加th
eg.four→fourth,thirteen→thirteenth
(2)不規(guī)則變化
one→first,two→second,three→third,five→fifth,eight→eighth,nine→ninth,twelve—twelfth
(3)以y結(jié)尾的十位整數(shù),變y為ie再加th
twenty→twentieth, forty→fortieth, ninety→ninetieth
(4)從二十一后的“幾十幾”直至“幾百幾十幾”或“幾千幾百幾十幾”只將個位的基數(shù)詞變?yōu)樾驍?shù)詞。
twenty-first,two hundred and forty-fifth
基數(shù)詞轉(zhuǎn)為序數(shù)詞的口訣:
基變序,有規(guī)律,詞尾加上-th.
一,二,三,特殊記,詞尾字母t,d,d.
八去t,九去e, ve要用f替。
ty將y變成i,th前面有個e.
若是碰到幾十幾,前用基來后用序。
本文作者:陸聰(微信公眾號:陸聰老師)
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