沒有2th這種表示方法，2nd才是正確的。第一1st，第二2nd，第三3rd，在第四的以后才是加th，如4th(forth),5th（fifth）。

2nd就是英語second的縮寫，意思是第二、其次，指名次、日期等。

參考翻譯：June 2nd 五月二日

例句：

June 2nd will be a red-letter day for him, he's getting married.

六月二日是他的大喜日子，他要結(jié)婚了。

1-30號的英文單詞縮寫：

1st, 2ed, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th,

11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, 20th,

21th(u can say twenty first), 22th(twenty second), 23th( twenty third), 24th, 25th, 26th, 27th, 28th, 29th,30th, 31th

來源：高三網(wǎng)