题目内容
16.My uncle lives in thetwentieth(twenty)floor of the flat.分析 我叔叔住在公寓的第20层楼上.
解答 答案:twentieth 根据句中关键词the可知,the修饰序数词,twenty的序数词是twentieth,故填:twentieth.
点评 基数词和序数词的区别就在于表示具体的顺序时,序数词前需要加the,此时一般会有明确的范围提示,就是说在多少个.因此弄清基数词和序数词的用法是做题的关键所在.
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