科技改變生活 · 科技引領未來
1-12的序數詞:
first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth
拓展資料:序數詞是 數詞的一種,主要在 英語語法中講到,在漢語中表示為“第幾”。此外,在生日中,描述你出生的日期時,也用到了序數詞。比如:May-first (5月1日)
基數詞變序數詞變化規則:
①基數詞變序序數詞,在詞尾加上-th。
②一,二,三,要特殊記憶,詞尾字母t,d,d。
③八去t,九除e,ve要用f替,ty將y變成i,th前面有個e。
④碰到幾十幾,前是基數詞,后是序數詞。
序數詞的記憶口訣基變序,有規律,詞尾加上-th。
序數詞 一,二,三,特殊記,詞尾字母t,d,d。
八去t,九除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。
Today we will learn Lesson 1 / Today we will learn the first lesson.
thirteenth(第十三),它的基數詞是thirteen(十三)
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)一般在基數詞后加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”只將個位的基數詞變為序數詞。
twenty-first,two hundred and forty-fift
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。
one—first two—second three—third
four—fourth five—fifth six—sixth
seven—seventh eight—eighth
nine—ninth ten—tenth eleven—eleventh twelve—twelfth thirteen—thirteenth fourteen—fourteenth
fifteen—fifteenth sixteen—sixteent seventeen—seventeenth eighteen—eighteenth nineteen—nineteenth twenty—twentieth
twenty-one—twenty-first、twenty-two—twenty-second、twenty-three—twenty-third、twenty-four—twenty-fourth、twrnty-five—twenty-fifth基變序有規律,一二三特殊記。其余末尾th 。
九去 e, 八去 t 。
f來把 ve 替
robots