中考英语数词知识点:序数词的构成

2019-10-28 07:01:06

  序数词的构成
  ①序数词多数由"基数词-th"构成,序数词前一般加定冠词the
  ②少数序数词构成属特殊情况
  e.g. One-first two-second three-third five-fifth eight-eighth nine-ninth twelve-twelfth
  ③以y结尾的十位整数,先将y改为i,再加-eth e.g. thirty-thirtieth
  ④21以上的多位数,要将末位数改为序数词,前面其他位数仍用基数词
  e.g. eighty-three-eighty-third nine hundred and sixty-two-nine hundred and sixty-second
  ⑤序数词的缩写形式由阿拉伯数字加序数词的后两个字母构成
  e.g. first-1st second-2nd