题目内容
14.It's thetwelfth time that I've been to America.(twelve)分析 这是我第12次去美国.
解答 答案:twelfth 根据it is与time,可知此处需要填写一个表示单数的词.根据所给词twelve,可知这是基数词12,基数词12后要接名词的复数形式,结合the故此处需要其序数词形式twelfth,表示第12次,为单数.故答案为twelfth.
点评 本题考查所给词的适当形式填空.首先要根据所给词twelve,判断出它的词性,进而联想它的变化形式.根据基数词与序数词的区别,来判断正确的答案.
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