1到30的基数词和序数词和序数词缩写怎么写?答:3、1~30的序数词的缩写如下: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。扩展资料序数词的语法:在英语中,使用序数词时前面要加定冠词 the,但是,在...