题目内容
4.October second is my grandpa'sninetieth (ninety) birthday.分析 十月二日是我爷爷的第九十岁生日.
解答 答案:ninetieth.本题考查序数词的用法,在某人多少岁生日时,用序数词形式,表示第几个生日,在句中一般情况下序数词前面要有定冠词the,当序数词前有形容词性物主代词或名词所有格修饰时,序数词前不用 the,故答案是ninetieth.
点评 本题考查序数词的用法.序数词表示次数,其后跟的是名词的单数形式.
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