1.1-100的序数词:
1st--first; 2nd--second; 3rd--third; 4th--fourth;
5th--fifth; 6th--sixth; 7th--seventh; 8th--eighth;
9th--ninth; 10th--tenth; 11th--eleventh; 12th--twelfth;
20th--twentieth; 21st--twenty-first; 22nd--twenty-second; 29th--twenty-ninth; 30th--thirtieth; 31st--thirty-first;
40th-- fortieth 50th-- fiftieth 60th--sixtieth
70th--seventieth; 80th--eightieth; 90th--ninetieth;
100th--hundredth
1st--first; 2nd--second; 3rd--third; 4th--fourth;
5th--fifth; 6th--sixth; 7th--seventh; 8th--eighth;
9th--ninth; 10th--tenth; 11th--eleventh; 12th--twelfth;
20th--twentieth; 21st--twenty-first; 22nd--twenty-second; 29th--twenty-ninth; 30th--thirtieth; 31st--thirty-first;
40th-- fortieth 50th-- fiftieth 60th--sixtieth
70th--seventieth; 80th--eightieth; 90th--ninetieth;
100th--hundredth