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–We’ll be back for our school’s _____ anniversary ceremony(周年庆典).
--I see. That means you’ll have a get-together with your classmates in ___ years.
A.twelve, tenB.twelfth, tenC.twelve, tenthD.twelfth, tenth
B

试题分析:句意:我们将回来参加学校的12周年庆典。我明白了。那就意味着10年后你将和你的同学聚在一起。twelfth第十二,用序数词形式表示第十二个周年,in+一段时间用于将来时中,故选B
点评:英语中数词分为两种,序数词和基数词,序数词的构成是重点,即1) 序数词1━19 除第一,第二,第三,第五,第八,第九, 第十二变化不规则外, 其余均由在基数词后加上 -th。 2) 十位整数的序数词的构成方法是, 是将十位整数基数词的词尾 -y 变成 i 再加 -eth。 3) 几十几的序数词,只是把个位数变成序数词, 十位数不变。 序数词的用法: 序数词主要用作定语,表语。前面要加定冠词 the。
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