of his works were written in his ．( )A．One-third, fiftiesB．One-third, fiftyC．One-thirds, fifties 题目和参考答案——青夏教育精英家教网——

题目内容

14．________of his works were written in his_______．（　　）

	A．	One-third； fifties		B．	One-third； fifty
	C．	One-thirds； fifties

分析他的三分之一的著作是他在五十多岁的时候写的．

解答答案：A 分数的分子用基数词，分母用序数词．分数的表达分为两种情况：1．分子是1时，分母用序数词单数；2．分子是2或2以上的数字时，分母用序数词的复数．在某人的"几十岁时"的结构是：in one's+几十，后加复数形式．故选A

点评此题目是考查的分数和在某人的几十岁时的用法，要解答正确，必须熟记他们各自的具体用法．

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