题目内容
17.On hisfortieth(40)birthday,he swam across the channel.分析 在他四十岁生日那一天,他游过了海峡.
解答 答案:fortieth.
根据On his--(40)birthday,he swam across the channel.可知在他四十岁生日那一天,他游过了海峡.表示"四十岁的生日"要用序数词表述,forty的序数词是fortieth.故填fortieth.
点评 本题考查用所给单词的适当形式填空,首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变化.
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