序数词的英文怎么说

序数词的英文：
Ordinal Numbers adjective numeral

• The ordinal number matching the number90in a series.
  第九十在数列中与数字90相配的序数词

• It was plain that the ordinance could never be revived.
  显然这个章程是决不会再提出来了。
• The ordinal number matching the number quadrillion in a series.
  在一系列数中相当于百万的四次乘方的序数
• The ordinal number matching the number one trillion in a series.
  第一万亿，第一兆可数数列中与一万亿相对应的序数

• The number was fifty.
  该数字为五十。
• There is safety in numbers
  人多势众
• It was an irrational number.
  这是一个无理数。

• possessive adjective
  所有格形容词
• It is often used with a possessive adjective.
  这一词常与所有格的形容词连用。
• This is the superlative form of an adjective.
  这是形容词的最高级形式。