核心问题
dependant 与 dependent 是否可通用?
词典解答
不能通用。dependent 既可用作形容词(作“依靠”解),又能用作名词(靠……养活的人,家眷):
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Promotion is dependent upon your record of success. (ALD) 晋升要靠优良的成绩。
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Too many young people are dependent on their parents. (FWF) 依靠父母的青年人是太多了。
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There are 2,500 U.S. military personnel with 6,000 dependents stationed at the two bases. (NP) 两个基地驻扎有美国 2500 名军事人员及 6000 名家眷。
dependant 只能用作名词(作“靠……养活的人”“家眷”解):
A man's wife and his children are his dependants. (ELD) 男人的妻子和孩子是靠他养活的人。