第一到第四十英语简写可以按照如下表述，注意11、12、13同其他表述的不同:

　　1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st 32nd 33rd 34th 35th 36th 37th 38th 39th 40th

　　第一到第三的英语简写是不一样的。第一是first，第二是second，第三是thⅰrd，从第四到四十的英语简写是有规律的。一般情况下是序数词+th。但第五和十二单词末尾是ve应改Ⅴe为f+th fⅰⅴe→fⅰfth twelⅴe→twelfth 还有单词末尾有e的去掉e+th 例如nⅰne→nⅰnth，第几十几的简写应为几十+th+序数词，例如第11的简写为tenth-one，因此第四十的简写为fortyth。

　　第1 first 1st

　　第2 second 2nd

　　第3 third 3rd

　　第4 fourth 4th

　　第5 fifth 5th

　　第6 sixth 6th

　　第7 seventh 7th

　　第8 eighth 8th

　　第9 ninth 9th

　　第10 tenth 10th

　　第11 eleventh 11th

　　第12 twelfth 12th

　　第13 thirteenth 13th

　　第14 fourteenth 14th

　　第15 fifteenth 15th

　　第16 sixteenth 16th

　　第17 seventeenth 17th

　　第18 eighteenth 18th

　　第19 nineteenth 19th

　　第20 twentieth 20th

　　第21 twenty-first 21st

　　第22 twenty-second 22nd

　　第23 twenty-third 23rd

　　第24 twenty-fourth 24th

　　第25 twenty-fifth 25th

　　第26 twenty-sixth 26th

　　第27 twenty-seventh 27th

　　第28 twenty-eighth 28th

　　第29 twenty-ninth 29th

　　第30 thirtieth 30th

　　第31 thirty-first 31st

　　第32 thirty-second 32nd

　　第33 thirty-third 33rd

　　第34 thirty-fourth 34th

　　第35 thirty-fifth 35th

　　第36 thirty-sixth 36th

　　第37 thirty-seventh 37th

　　第38 thirty-eighth 38th

　　第39 thirty-ninth 39th

　　第40 fortieth 40th

　　第一到第四十英语简写可以按照如下表述，注意11、12、13同其他表述的不同:

　　1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st 32nd 33rd 34th 35th 36th 37th 38th 39th 40th

　　第一到第三的英语简写是不一样的。第一是first，第二是second，第三是thⅰrd，从第四到四十的英语简写是有规律的。一般情况下是序数词+th。但第五和十二单词末尾是ve应改Ⅴe为f+th fⅰⅴe→fⅰfth twelⅴe→twelfth 还有单词末尾有e的去掉e+th 例如nⅰne→nⅰnth，第几十几的简写应为几十+th+序数词，例如第11的简写为tenth-one，因此第四十的简写为fortyth。

　　第1 first 1st

　　第2 second 2nd

　　第3 third 3rd

　　第4 fourth 4th

　　第5 fifth 5th

　　第6 sixth 6th

　　第7 seventh 7th

　　第8 eighth 8th

　　第9 ninth 9th

　　第10 tenth 10th

　　第11 eleventh 11th

　　第12 twelfth 12th

　　第13 thirteenth 13th

　　第14 fourteenth 14th

　　第15 fifteenth 15th

　　第16 sixteenth 16th

　　第17 seventeenth 17th

　　第18 eighteenth 18th

　　第19 nineteenth 19th

　　第20 twentieth 20th

　　第21 twenty-first 21st

　　第22 twenty-second 22nd

　　第23 twenty-third 23rd

　　第24 twenty-fourth 24th

　　第25 twenty-fifth 25th

　　第26 twenty-sixth 26th

　　第27 twenty-seventh 27th

　　第28 twenty-eighth 28th

　　第29 twenty-ninth 29th

　　第30 thirtieth 30th

　　第31 thirty-first 31st

　　第32 thirty-second 32nd

　　第33 thirty-third 33rd

　　第34 thirty-fourth 34th

　　第35 thirty-fifth 35th

　　第36 thirty-sixth 36th

　　第37 thirty-seventh 37th

　　第38 thirty-eighth 38th

　　第39 thirty-ninth 39th

　　第40 fortieth 40th