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人教版小學英語數詞考點
人教版小學英語數詞考點
更新时间:2024-11-26 23:47:29

人教版小學英語數詞考點?小學英語基礎知識彙總大全,建議收藏,今天小編就來聊一聊關于人教版小學英語數詞考點?接下來我們就一起去研究一下吧!

人教版小學英語數詞考點(小學英語基礎知識彙總大全)1

人教版小學英語數詞考點

小學英語基礎知識彙總大全,建議收藏!

4數詞:基數詞、序數詞

基數詞

(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,再加末兩位數或末位數;

586→five hundred and eighty-six,803→eight hundred and three

(4)l,000以上,先從右往左數,每三位數加一個“,”,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

序數詞

(1)一般在基數詞後加th

eg.four→fourth,thirteen→thirteenth

(2)不規則變化

one→first,two→second,three→third,five→fifth,eight→eighth,nine→ninth,twelve—twelfth

(3)以y結尾的十位整數,變y為ie再加th

twenty→twentieth, forty→fortieth, ninety→ninetieth

(4)從二十一後的“幾十幾”直至“幾百幾十幾”或“幾千幾百幾十幾”隻将個位的基數詞變為序數詞。

twenty-first,two hundred and forty-fifth

基數詞轉為序數詞的口訣

基變序,有規律,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将y變成i,th前面有個e.

若是碰到幾十幾,前用基來後用序。

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