• one; first（第⼀）; eleventh（第⼗⼀）;
• two; second（第⼆）; twelfth（第⼗⼆）; twentieth（第⼆⼗）;
• three; third（第三）; thirteenth（第⼗三）; thirtieth（第三⼗）;
• four; fourth（第四）; fourteenth（第⼗四）; fortieth（第四⼗）;
• five; fifth（第五）; fifteenth（第⼗五）; fiftieth（第五⼗）;
• six; sixth（第六）; sixteenth（第⼗六）; sixtieth（第六⼗）;
• seven; seventh（第七）; seventeenth（第⼗七）; seventieth（第七⼗）;
• eight; eighth（第⼋）; eighteenth（第⼗⼋）; eightieth（第⼋⼗）;
• nine; ninth（第九）; nineteenth（第⼗九）; ninetieth（第九⼗）;
• ten; tenth（第⼗）; hundredth（第一百）; thousandth（第⼀千）; millionth（第⼀百万）; billionth（第⼗亿）