基数词31怎么写

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.sixteenth seventeen.seventeenth eighteen.eighteenth nineteen.nineteenth twenty.twentieth twenty-one.twenty-first twenty-two.twenty-second twenty-three.twenty-third twenty-four.twenty-fourth twenty-five.twenty-fifth twenty-six twenty-sixth twenty-seven.twenty-seventh 虎珐港貉蕃股歌瘫攻凯twenty-eight.twenty-eighth twenty-nine.twenty-ninth thirty.thirtieth thirty-one thirty-first。

1-100的序数词分为四个类。

1、第一类

first (1st) 第一

second (2nd) 第二

third (3rd) 第三

（在括号里的是缩写形式，均在阿拉伯数字后面加上相应序数词的最后两个字母构成，以下各类与此相同。）这类序数词只有三个，在整个序数词里面是特殊的，就和第一类基数词一样，需要逐个地硬记下来。

2、第二类：

fourth (4th) 第四

fifth (5th) 第五

sixth (6th) 第六

seventh (7th) 第七

eighth (8th) 第八

ninth (9th) 第九

tenth (10th) 第十

eleventh (11th) 第十一

twelfth (12th) 第十二

thirteenth (13th) 第十三

fourteenth (14th) 第十四

fifteenth (15th) 第十五

sixteenth (16th) 第十六

seventeenth (17th) 第十七

eighteenth (18th) 第十八

nineteenth (19th) 第十九

这一类序数词共有十六个。均在相应的基数词后面加上后缀-th构成。要注意其中fifth、eighth、ninth、twelth四个词的拼法。

3、第三类：

twentieth (20th) 第二十

thirtieth (30th) 第三十

fortieth (40th) 第四十

fiftieth (50th) 第五十

sixtieth (60th) 第六十

seventieth (70th) 第七十

eightieth (80th) 第八十

ninetieth (90th) 第九十

这一类全是十位整数的序数词，共八个。它们的构成方法是：先将相应的十位整数的基数词词尾-ty中的y改成i，然后在加上后缀-eth。

4、第四类：

thirty-first (31th) 第三十一

sixty-second (62nd) 第六十二

eighty-seventh (87th) 第八十七

ninety-eighth (98th) 第九十八

这类表示“第几十几”的序数词，跟表示“几十几”的基数词一样简单。在构成方法上均由基数词“几十几”变化而来，十位数不变，仅把个位上的基数词变成序数词就行了。

基数词+序数词：one[基数词].first〔序数词〕 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.sixteenth seventeen.seventeenth eighteen.eighteenth nineteen.nineteenth twenty.twentieth twenty-one.twenty-first twenty-two.twenty-second twenty-three.twenty-third twenty-four.twenty-fourth twenty-five.twenty-fifth twenty-six twenty-sixth twenty-seven.twenty-seventh twenty-eight.twenty-eighth twenty-nine.twenty-ninth thirty.thirtieth thirty-one thirty-first

基数词变序数词的规律是一般直接+th。 ve结尾的变f再加th

1到31的序述词和基数词分别是

序述词：

英语序数词1--31

first(1st)第一

second(2nd)第二

third(3rd)第三

fourth(4th)第四

fifth(5th)第五

sixth(6th)第六

seventh(7th)第七

eighth(8th)第八

ninth(9th)第九

tenth(10th)第十

eleventh(11th)第十一

twelfth(12th)第十二

thirteenth(13th)第十三

fourteenth(14th)第十四

fifteenth(15th)第十五

sixteenth(16th)第十六

seventeenth(17th)第十七

eighteenth(18th)第十八

nineteenth(19th)第十九

twentieth(20th)第二十

twenty-first(21st)第二十一

twenty-seconddierer(22nd)第二十二

twenty-third(23rd)第二十三

twenty-fourth(24th)第二十四

twenty-fifth(25th)第二十五

twenty-sixth(26th)第二十六

twenty-seventh(27th)第二十七

twenty-eighth(28th)第二十八

twenty-ninth(29th)第二十九

thirtieth(30th)第三十

thirty=first(31st)第三十一

基数词：

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.sixteenth

seventeen.seventeenth

eighteen.eighteenth

nineteen.nineteenth

twenty.twentieth

twenty-one.twenty-first

twenty-two.twenty-second

twenty-three.twenty-third

twenty-four.twenty-fourth

twenty-five.twenty-fifth

twenty-sixtwenty-sixth

twenty-seven.twenty-seventh

twenty-eight.twenty-eighth

twenty-nine.twenty-ninth

thirty.thirtieth

thirty-onethirty-first

one two three four five six seven eight nine ten eleven twelve thirteen foueteen fifteen sixteen seventeen eightteen ninteen twenty twenty-one twenty-two twenty-three twenty-four twenty-five twenty-six twenty-seven twenty-eight twenty-nine thirty

thirty-one

1 one fist2 two second3 three third 4 four fourth5 five fifth6 six sixth7 seven seventh8 eight eighth9 nine ninth10 ten tenth11 eleven eleventh12 twelve twelfth 13 thirteen thirteenth14 fourteen fourteenth15 fifteen fifteenth16 sixteen sixteenth17 seventeen seventeenth18 eighteen eighteenth19 ninteen ninteentstrong0 twenty twentietstrong1 twenty-one twenty-first…………以此类推30 thirty thirtieth31 thirty-one thirty-first。

one 1 two 2 three 3 four 4 five 5 six 6 seven 7 eight 8 nine 9 ten 10

eleven 11 twelve 12 thirteen 13 fourteen 14 fifteen 15 sixteen 16 seventeen 17 eighteen 18 nineteen 19 twenty 20 thirty 30 thirty-two 32

forty 40 forty-five 45 fifty 50 fifty-six 56 sixty 60 seventy 70 eighty 80 ninety 90 ninety-one 91

1 one-first 2 two-second 3 three- third 4 four- fourth 5 five-fifth 6 six-sixth 7 seven-seventh 8 eight-eighth 9 nine-ninth 10 ten- tenth 11 eleven- eleventh 12 twelve-twelfth 13 thirteen-thirteenth 14 fourteen-fourteenth 15 fifteen-fifteenth 16 sixteen-sixteenth 17 seventeen-seventeenth 18 eighteen-eighteenth 19 ninteen-nineteenth 20 twenty-twentieth 21 twenty-one--twenty-first 22 twenty-two--twenty-second 23 twenty-three--twenty-third 24 twenty-four--twenty-fourth 25 twenty-five--twenty-fifth 26 twenty-six--twenty-sixth 27 twenty-seven--twenty-seventh 28 twenty-eight--twenty-eighth 29 twenty-nine--twenty-ninth 30 thirty--thirtieth。

20 twenty

21 twenty-one

22 twenty-two

23 twenty-three

24 twenty-four

25 twenty-five

26 twenty-six

27 twenty-seven

28 twenty-eight

29 twenty-nine

30 thirty

第20 twentieth

第21 twenty-first

第22 twenty-second

第23 twenty-third

第24 twenty-fourth

第25 twenty-fifth

第26 twenty-sixth

第27 twenty-seventh

第28 twenty-eighth

第29 twenty-ninth

第30 thirtieth

第31 thirty-first